Interface and Hardware Component Configuration Guide, Cisco IOS Release 12.4
Content Engine Network Module for Caching and Content Delivery
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Content Engine Network Module for Caching and Content Delivery

Last Updated: April 17, 2012

The Content Engine Network Module for Caching and Content Delivery feature integrates content engine (CE) functionality into branch office routers for enterprise and service provider sites. Content engine functionality provides the following benefits:

  • Reduced bottlenecks and increased available bandwidth
  • Offloading of a significant amount of traffic and number of TCP connections from origin servers

Transferring content engine capabilities from a router-attached appliance to an integrated network module provides the following benefits:

  • Increased manageability
  • Reduced complexity
  • Decreased price
  • Optimized performance

Feature Specifications for the Content Engine Network Module for Caching and Content Delivery

Feature History

Release

Modification

12.2(11)YT

This feature was introduced.

12.2(13)T

This feature was integrated into Cisco IOS Release 12.2(13)T.

Supported Platforms

Cisco 2600 series, Cisco 2600XM series, Cisco 2691, Cisco 3640, Cisco 3640A, Cisco 3660, Cisco 3725, and Cisco 3745.

Determining Platform Support Through Cisco Feature Navigator

Cisco IOS software is packaged in feature sets that are supported on specific platforms. To get updated information regarding platform support for this feature, access Cisco Feature Navigator. Cisco Feature Navigator dynamically updates the list of supported platforms as new platform support is added for the feature.

Cisco Feature Navigator is a web-based tool that enables you to determine which Cisco IOS software images support a specific set of features and which features are supported in a specific Cisco IOS image. You can search by feature or release. Under the release section, you can compare releases side by side to display both the features unique to each software release and the features in common.

To access Cisco Feature Navigator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:

http://www.cisco.com/register http://www.cisco.com/register

Cisco Feature Navigator is updated regularly when major Cisco IOS software releases and technology releases occur. For the most current information, go to the Cisco Feature Navigator home page at the following URL:

http://www.cisco.com/go/fn

Availability of Cisco IOS Software Images

Platform support for particular Cisco IOS software releases is dependent on the availability of the software images for those platforms. Software images for some platforms may be deferred, delayed, or changed without prior notice. For updated information about platform support and availability of software images for each Cisco IOS software release, refer to the online release notes or, if supported, Cisco Feature Navigator.

Prerequisites for the Content Engine Network Module for Caching and Content Delivery

  • Install Cisco IOS Release 12.2(11)YT, Cisco IOS Release 12.2(13)T, or a later release.
  • Install Cisco ACNS Version 4.2.3 or a later release if it is not already installed. If you have a CE network module with an installed SCSI controller expansion module, refer to the Installing Cisco ACNS Software on a CE Network Module with a SCSI Expansion Module. For other types of CE network modules, refer to software installation and upgrade instructions in the documentation for the appropriate ACNS software version at the following URL: http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/
  • Install the CE network module. Be sure that it is properly seated and that the EN (enable) and PWR (power) LEDs are lit. For information about installing CE network modules, refer to Connecting CE Network Modules for Caching and Content Delivery.
  • For Cisco 2691, Cisco 3725, and Cisco 3745 routers only, ensure that the ROM monitor (ROMMON) version is 12.2(8r)T2 or a later version. This ROMMON version contains a fix that prevents the router from resetting all the network modules when it is reloaded.

Restrictions for the Content Engine Network Module for Caching and Content Delivery

  • Cisco IOS Release 12.2(11)YT, Cisco IOS Release 12.2(13)T, or a later release is required.
  • Cisco ACNS software Version 4.2.3 or a later release is required.
  • The only ACNS software features supported by the CE network module are the ACNS software content engine features.
  • Online insertion and removal (OIR) is supported only on Cisco 3660 and Cisco 3745 platforms.
  • Transmission speed over the internal CE link is automatically negotiated between the CE interface and the Cisco IOS interface on the router side. On Cisco 2600 series and Cisco 2600XM series platforms except for the Cisco 2691, a speed of 10 Mbps is negotiated. On all other platforms, the speed of 100 Mbps is automatically negotiated.
  • The maximum number of CE network modules that can be installed in a router is limited by the amount and type of power that is provided to the network module slots. The table below lists the maximum number of CE network modules that can be installed on different router types.
Table 1Maximum Number of CE Network Modules per Router Type

Router Type

Number of Network Modules

Cisco 2600 series

1

Cisco 2600XM series

1

Cisco 2691

1

Cisco 3640 and Cisco 3640A

3

Cisco 3660

6

Cisco 3725

2

Cisco 3745

4

Information About the Content Engine Network Module for Caching and Content Delivery

The CE network module is specialized to run an integrated enterprise content delivery network (E-CDN) application on a Cisco Application and Content Networking System (ACNS) software platform that includes content-caching and content-delivery software.

The first task for the CE network module is to define IP addresses and subnet masks for the CE network module interfaces. Because the CE network module does not have direct console access, this is a necessary first step to allow access so that you can configure ACNS software on the CE itself.

After defining IP addresses, ensure that ACNS software Version 4.2.3 or a later release is loaded on the CE network module. The type of storage memory that your CE network module employs determines how the ACNS software is installed, as follows:

  • CE network modules with optional IDE expansion modules for internal storage arrive with ACNS software already installed.
  • CE network modules with optional SCSI expansion modules for connecting external storage arrays arrive without ACNS software installed. You must install ACNS software by following one of the procedures in the Installing Cisco ACNS Software on a CE Network Module with a SCSI Expansion Module.

The following concepts are helpful in understanding the CE network module:

Cisco Content Delivery Networks

When a Cisco E-CDN application is enabled, a combination of content engines, content routers, content services switches, and content distribution managers can be deployed to create a complete content delivery network system that includes content routing, content switching, content distribution and management, and content services, as well as content delivery. The CE network module is one element of that network. The figure below shows a typical E-CDN topology.

Cisco ACNS software unifies caching software and Cisco E-CDN software into a single software platform that is supported on content engines, content distribution managers, and content routers. ACNS software accelerates content delivery and optimizes bandwidth usage by caching frequently accessed content and fulfilling content requests locally rather than traversing the Internet or intranet to a distant server each time a request is made. The ACNS software cache application works in tandem with Cisco IOS routing software to handle web traffic, including user requests to view pages and graphics (objects) on World Wide Web servers--whether the traffic is internal or external to your network.

In addition to relieving WAN bottlenecks with localized caching, Cisco CEs can become the content delivery elements of a Cisco content delivery network (CDN) solution. CDN solutions enable the proactive distribution of rich media files to content engines at the network edge for local access. Primary CDN applications include e-learning, corporate communications, and software distribution. Designed for affordability and ease of installation, a CDN solution enables you to quickly deploy high-impact, high-bandwidth rich media, such as high-quality streaming video--with minimal administration.

The CE network module is completely interoperable with other CE appliances and components of an E-CDN. CE network module hardware is based on Cisco CE-507 and CE-560 architecture, uses an Intel Mobile Pentium III microprocessor, and runs under a Linux operating system.

For more information, refer to the following:

Figure 1Cisco Enterprise Content Delivery Network Topology


Cisco Content Engines

Cisco CEs, including CE network modules, accelerate content delivery and optimize bandwidth usage in the following two ways:

  • By transparently caching frequently accessed content through the Web Cache Communication Protocol (WCCP) V.2.
  • By fulfilling content requests locally rather than by traversing the Internet or corporate intranet to a distant server farm each time that a request is made.

The CE leverages interception mechanisms based on Cisco IOS software to handle requests for web traffic--whether internal or external to your network. In addition, Cisco CEs can be deployed in reverse proxy mode in front of web servers to dramatically increase performance. By transparently caching inbound requests for content, CEs can offload a significant amount of traffic and number of TCP connections from origin servers. CEs dynamically distribute web content to eliminate bottlenecks and to speed access to content using this type of scenario:

  1. A user (client) requests a web page from a browser.
  2. A router enabled with WCCP analyzes the request and, on the basis of TCP port number, determines if it should transparently redirect the request to a CE. If so, the request is redirected to the CE.
  3. If the CE has a copy of the requested object in storage, the CE sends the object to the user. Otherwise, the CE simultaneously obtains the requested object from the web server, stores a copy of the object (caches it) locally, and forwards the object to the user.
  4. Subsequent requests for the same content are transparently fulfilled by the CE from its local storage.

By caching web objects in this manner, the CE can speed the satisfaction of user requests when more than one user wants to access the same object. Caching in this manner also reduces the amount of traffic between your network and the Internet, potentially improving your overall network performance and optimizing your bandwidth usage, typically resulting in WAN bandwidth savings of 25 to 60 percent.

CE Network Module Hardware

The CE network module occupies a single router slot and has the properties that are summarized in the table below.

Table 2CE Network Module Properties

Property

Description

Part Number

  • NM-CE-BP-20G-K9 (20 GB internal storage)
  • NM-CE-BP-40G-K9 (40 GB internal storage)
  • NM-CE-BP-SCSI-K9 (SCSI connection for external storage)

Router Slot Usage

One network module slot.

Processor

Intel Mobile Pentium III, 500 MHz.

Memory

256 MB DRAM, upgradable to 512 MB.

External Compact Flash Memory

(Optional) 256 MB, Cisco part number MEM-256CF-x.x-K9=, where x.x is the version of Cisco ACNS software.

Internal Storage

(Optional) One of the following 2.5-in. IDE drives (laptop) on an expansion module:

  • 20 GB, 4200 RPM
  • 40 GB, 5400 RPM

External Storage Connectivity

(Optional) SCSI expansion module with SCSI controller and 64-pin SCSI connector to provide connectivity to the types of external storage arrays supported by Cisco CE-507 and Cisco CE-560 content engines.

Platforms

Cisco 2600 series, Cisco 2600XM series, Cisco 2691, Cisco 3640, Cisco 3640A, Cisco 3660, Cisco 3725, and Cisco 3745.

Power Consumption

16 watts (including IDE disk).

Expansion Modules

EM-CE-20G EM-CE-40G EM-CE-SCSI

External hardware interfaces include the following:

  • An external 10/100 (Fast Ethernet) interface port that provides direct LAN connectivity. This interface has an RJ-45 connector.
  • An optional SCSI expansion module that has a 64-pin SCSI connector to provide external storage array connectivity.
  • An external compact Flash slot that is available to house an optional Flash memory for image recovery.

CE Network Module Operating Topologies

The CE network module can be deployed by branch office customers in one of the following topologies:

  • The CE network module is directly connected to a LAN by an Ethernet switch or hub through the network module's external Fast Ethernet (FE) interface.

Similar to situations in which a PC is connected to a LAN, the Ethernet interface on the CE network module is given an IP address from the branch office's LAN IP subnet space, which is typically configured statically using the Cisco IOS command-line interface (CLI) on the console port. One advantage of this topology is that the Fast Ethernet port on the CE network module can operate at line speed. The only communication between the router and the CE network module is in the form of keepalives or heartbeats that are processed through the internal FE ports. All caching and streaming traffic goes through the external FE port.

  • The CE network module is directly connected to an Ethernet interface on the router using the internal FE interface on the CE network module.

In this topology, the Ethernet interface is given an address from an IP subnet separate from the branch office LAN subnet. All caching and streaming traffic flows through the router. The CE's performance is limited by the router's switching performance. In this scenario, streaming and caching traffic, as well as keepalive traffic, goes through internal FE ports. Caching and streaming traffic uses router resources such as CPU, SDRAM bandwidth, and backplane PCI bandwidth.

CE Network Module Interfaces

The CE network module uses three interfaces for communication, as shown in the figure below. Two of the interfaces enable internal administrative and management traffic between the router (Cisco IOS) and the CE (Cisco ACNS software) over an internal Ethernet segment. The third interface is the external link that supports CE functionality.

Note that the interfaces within the "Router" box in the figure below are managed by Cisco IOS, while the interfaces within the "CE Network Module" box are managed by the CE CLI (Cisco ACNS software).

Figure 2CE Network Module Interfaces


The router-side interface for the internal Ethernet segment is known as interface Content-Engine in the Cisco IOS software. This interface is the only interface associated with the CE that is visible in the output of the show interfaces command. It provides access through the Cisco IOS software to configure the CE interfaces with IP addresses and a default gateway. The router-side internal interface is connected to the router PCI backplane and is managed by Cisco IOS CLI.

The CE side of the internal Ethernet segment is called interface FastEthernet 0/1 in the CE CLI (Cisco ACNS software). When packets are sent from the router to the CE, they are sent out from the router on interface Content-Engine and received at the CE on interface FastEthernet 0/1. When packets are sent from the CE to the router, they are sent out from the CE on interface FastEthernet 0/1 and received at the router on interface Content-Engine. The internal CE-side interface is connected to the PCI bus on the CE side, and it is managed by the CE software. Only the IP address is configured from Cisco IOS CLI. All other configurations are performed from the CE CLI or from the CE graphical user interface (GUI). Bandwidth, autosense, and duplex settings are not allowed on this interface.

The external CE interface is known as interface FastEthernet 0/0 in the CE CLI (Cisco ACNS software). This is the Ethernet port on the network module, and it supports data requests and transfers from outside sources. This link provides direct Fast Ethernet connectivity to the LAN through an RJ-45 connector. Only the IP address is configured from Cisco IOS CLI; all other configurations are performed from the CE CLI or from the CE GUI.

How to Configure and Manage the Content Engine Network Module for Caching and Content Delivery

Refer to the following sections for configuration, installation, and troubleshooting tasks for the CE network module. Each task in the list is identified as either required or optional.

Configuring IP Addresses on the CE Network Module Interfaces

In this procedure, IP addresses are configured on the three CE network module interfaces shown in the figure above:

  • Router-side interface to the internal link
  • CE interface to the internal link
  • CE external interface
SUMMARY STEPS

1.    interface content-engine slot / unit

2.    ip address router-side-ipaddr subnet-mask

3.    service-module ip address ce-side-ipaddr subnet-mask

4.    service-module external ip address external-ipaddr subnet-mask

5.    service-module ip default-gateway gw-ipaddr

6.    exit

7.    exit

8.    show running-config


DETAILED STEPS
 Command or ActionPurpose
Step 1
interface content-engine slot / unit


Example:

Router(config)# interface content-engine 4/0

 

Enters content-engine interface configuration mode for the specified interface. The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.
 
Step 2
ip address router-side-ipaddr subnet-mask


Example:

Router(config-if)# ip address 172.18.12.1 255.255.255.0

 

Configures an IP address and subnet mask on the router-side interface to the internal link. The arguments are as follows:

  • router-side-ipaddr --IP address for the internal router-side CE interface.
  • subnet-mask --Subnet mask to use with the IP address.
 
Step 3
service-module ip address ce-side-ipaddr subnet-mask


Example:

Router(config-if)# service-module ip address 172.18.12.2 255.255.255.0

 

Configures an IP address and subnet mask on the CE interface to the internal link. The arguments are as follows:

  • ce-side-ipaddr --IP address for the internal CE-side interface.
  • subnet-mask --Subnet mask to use with the IP address.
 
Step 4
service-module external ip address external-ipaddr subnet-mask


Example:

Router(config-if)# service-module external ip address 10.3.208.190 255.255.0.0

 

Configures an IP address and subnet mask on the Fast Ethernet external interface of the CE network module. The arguments are as follows:

  • external-ipaddr --IP address for the external CE interface.
  • subnet-mask --Subnet mask to use with the IP address.
 
Step 5
service-module ip default-gateway gw-ipaddr


Example:

Router(config-if)# service-module ip default-gateway 10.3.0.1

 

Configures an IP address for the default gateway for the CE network module. The argument is as follows:

  • gw-ipaddr --IP address for the default gateway.
 
Step 6
exit


Example:

Router(config-if)# exit

 

Exits content-engine interface configuration mode.

 
Step 7
exit


Example:

Router(config)# exit

 

Exits global configuration mode.

 
Step 8
show running-config


Example:

Router# show running-config



Example:

.



Example:

.



Example:

.



Example:

!



Example:

interface Content-engine4/0



Example:

ip address 172.18.12.1 255.255.255.0



Example:

service-module external ip address 10.3.208.190 255.255.0.0



Example:

service-module ip address 172.18.12.2 255.255.255.0



Example:

service-module ip default-gateway 10.3.0.1



Example:

!



Example:

.



Example:

.



Example:

.

 

Verifies that the address configuration is correct.

 

Opening a Console Access Session to Configure the CE Network Module

The CE network module is a standalone content engine with its own startup and run-time configurations that are independent of the Cisco IOS configuration on the router. Although IP addresses are defined on the CE network module interfaces through the router's Cisco IOS CLI, as explained in the Configuring IP Addresses on the CE Network Module Interfaces, the CE itself is configured in the same way that standalone CE appliances are configured, with a combination of CE CLI and web-based GUI. The software to configure CEs is known as Cisco Application and Content Networking System (ACNS) software.

The CE network module differs from a standalone CE appliance because it does not have an external console port. Console access to the CE network module is enabled when you issue the service-module content-engine session command on the router, as explained in this section, or when you initiate a Telnet connection. The lack of an external console port means that the initial boot-up configuration is possible only through the router.

When you issue the service-module content-engine sessioncommand, you create a console session with the CE, in which you can issue any of the CE configuration commands. After completing work in the session and exiting the CE software, you are returned to Cisco IOS CLI, where you must clear the session using the service-module content-engine session clearcommand.


Timesaver

Configure IP addresses on the CE network module interfaces before opening a console access session.

SUMMARY STEPS

1.    service-module content-engine slot /unit session

2.    Enter ACNS configuration commands at the CE-netmodule prompt.

3.    Press Control-Shift-6, and then press x to return to router configuration.

4.    service-module content-engine slot /unit session clear


DETAILED STEPS
 Command or ActionPurpose
Step 1
service-module content-engine slot /unit session


Example:

Router# service-module content-engine 4/0 session



Example:



Example:

Trying 10.10.10.1, 2129 ... Open



Example:



Example:

CE-netmodule con now available



Example:



Example:

Press RETURN to get started!



Example:



Example:

CE-netmodule> enable



Example:

CE-netmodule#

 

Provides console access to the CE network module from the router CLI by initiating a reverse Telnet connection. This command places you in CE CLI configuration mode. After using the enable command, you are in CE CLI privileged EXEC mode.

The reverse Telnet connection is made using the IP address of the CE interface and the terminal (TTY) line associated with the CE network module. The TTY line number is calculated using the following formula (n*32)+1, where n is the number of the chassis slot that contains the CE network module. In the example output provided in this step, the CE interface IP address is 10.10.10.1, and the TTY line number is 129. The number 2000 has been added to the TTY line number for the reverse Telnet session.

The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.

The CE interface must be up before you can use the service-module content-engine session command.

Once a session is started, you can perform any CE configuration task. You first access the CE console in a user-level shell. The enable command takes you to the privileged EXEC command shell, where most commands are available.

 
Step 2
Enter ACNS configuration commands at the CE-netmodule prompt.

Example:

 

CE configuration tasks are described in documentation for the appropriate version of Cisco ACNS software at the following URL: http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/

 
Step 3
Press Control-Shift-6, and then press x to return to router configuration.  

The CE session stays up until you use the service-module content-engine session clear command as described in Step 4. While the CE session remains up, you can use Enter to return to the CE session from router configuration.

 
Step 4
service-module content-engine slot /unit session clear


Example:

Router# service-module content-engine 4/0 session clear

 

Clears the existing CE network module configuration session. Use this command after exiting the CE module as described in Step 2. The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.

Press Enter when you are asked to confirm this command.

 

Managing the CE Network Module

The commands in this section are used for the graceful shutdown, reset, and reload of a CE network module after it has been installed. For information on installation, refer to the following documents:

SUMMARY STEPS

1.    service-module content-engine slot / unit shutdown

2.    service-module content-engine slot / unit reset

3.    service-module content-engine slot / unit reload


DETAILED STEPS
 Command or ActionPurpose
Step 1
service-module content-engine slot / unit shutdown


Example:

Router# service-module content-engine 1/0 shutdown



Example:



Example:

Shutdown is used for Online removal of Service Module.



Example:

Do you want to proceed with shutdown?[confirm]



Example:

Use service module reset command to recover from shutdown.

 

Performs a graceful halt of the CE network module operating system so that the CE disks are not corrupted. Used when removing or replacing a hot-swappable CE network module during online insertion and removal (OIR). The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.

At the confirmation prompt, press Enter to confirm the action or n to cancel.

 
Step 2
service-module content-engine slot / unit reset


Example:

Router# service-module content-engine 1/0 reset



Example:



Example:

Use reset only to recover from shutdown or failed state



Example:

Warning: May lose data on the hard disc!



Example:

Do you want to reset?[confirm]

 

Performs a hardware reset of the CE network module. The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.

At the confirmation prompt, press Enter to confirm the action or n to cancel.

 
Step 3
service-module content-engine slot / unit reload


Example:

Router# service-module content-engine 1/0 reload



Example:



Example:

Do you want to proceed with reload?[confirm]

 

Performs a graceful halt and reload of the CE network module operating system. The arguments are as follows:

  • slot --Number of the router chassis slot for the network module.
  • unit --Number of the daughter card on the network module. For CE network modules, always use 0.

At the confirmation prompt, press Enter to confirm the action or n to cancel.

 

Installing Cisco ACNS Software on a CE Network Module with a SCSI Expansion Module

A Cisco CE network module with an installed SCSI controller expansion module does not ship with installed ACNS software. If you have this type of CE network module, you also require an external storage array to hold the ACNS software.

Before using the CE network module, you need to install an external storage array and the Cisco ACNS software. ACNS software is installed by one of the following methods:

Installing Cisco ACNS Software from a CD-ROM or from Cisco.com

To perform the Cisco ACNS software installation from a CD-ROM or from Cisco.com, you need a local FTP server that can be reached from the router that contains the CE network module. The local FTP server should be configured with a valid username and password.

The external storage array is also installed during this procedure.


Note
In addition to the ACNS x.x.x image, the CD-ROM contains special upgrade and downgrade images, meta files, manifest samples, and so forth. These are not required for installation, but may be useful if you are using certain features of ACNS.
SUMMARY STEPS

1.    Download to a local FTP server the Cisco ACNS software image. You can use the image from either of these locations:

2.    Use the show disks command or the show disks details command in CE CLI privileged EXEC mode to establish a baseline value for CE disk usage. The output of these commands establish a baseline value for the amount of disk usage or the number of disks detected, respectively. This step must be completed before you attach the external storage array. Later, in Step 6 of this procedure, you verify that the software detects the external storage array by comparing this output to the output from the same command after you have attached the external storage array.

3.    Attach the external storage array to the Cisco content engine network module. For information on attaching an external storage array, see the Cisco Storage Array 6 Installation and Configuration Guide and the hardware documents in the Additional References.

4.    Restart the network module using either of the following commands:

5.    Configure the network module for IP address and default gateway, using Cisco IOS CE interface configuration mode on the router, as explained in the Configuring IP Addresses on the CE Network Module Interfaces.

6.    Confirm that the external storage array is detected by the network module by using either the show disks command or the show disks detailscommand, as explained here:

7.    In CE CLI privileged EXEC mode, enter the disk recover command to create disk partitions on the external storage array for use by the network module.

8.    In CE CLI privileged EXEC mode, enter the copy ftp install{hostname | ip-address} remotefiledir remotefilename command to download the Cisco ACNS software image from the FTP server to the external storage array and to the onboard Strata Flash memory on the network module. In the following example, the FTP server is server4, the directory is /images, and the image name is acns_file:

9.    Restart the network module as described in Step 4 of this procedure.

10.    Configure the Cisco ACNS software as required. For more information, refer to documentation for the appropriate version of Cisco ACNS software at the following URL: http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/


DETAILED STEPS
Step 1   Download to a local FTP server the Cisco ACNS software image. You can use the image from either of these locations:
  • The CD-ROM that accompanied the CE network module--Copy the ACNS-x.x.x-K9.bin software file, which is located in the root directory. ACNS-x.x.x-K9.bin is the generic form for the Cisco ACNS file name. For example, Cisco ACNS software version 4.2.3 has the software file name ACNS-4.2.3-K9.bin.
  • The Cisco Software Center at http://www.cisco.com/kobayashi/sw-center/sw-content.shtml -- Select the appropriate version of Cisco ACNS software and follow the prompts to download the ACNS software image.
Step 2   Use the show disks command or the show disks details command in CE CLI privileged EXEC mode to establish a baseline value for CE disk usage. The output of these commands establish a baseline value for the amount of disk usage or the number of disks detected, respectively. This step must be completed before you attach the external storage array. Later, in Step 6 of this procedure, you verify that the software detects the external storage array by comparing this output to the output from the same command after you have attached the external storage array.
Note    Before performing this step, make sure that you have used the ip address command under the content-engine interface to define an IP address for the router-side interface to the internal link and that the content-engine interface is in an up state. The ip address command is explained in Step 2 of the Configuring IP Addresses on the CE Network Module Interfaces.

The following example shows how to enter CE CLI privileged EXEC mode for the CE network module in slot 4 and then shows the two commands that you can use to establish baseline disk usage. An example of the output from the two commands is shown in Step 6.



Example: 
Router# service-module content-engine 4/0 session
Trying 10.10.10.1, 2129 ... Open
CE-netmodule con now available
Press RETURN to get started!
CE-netmodule> enable
Password:

 
		   
		   

Example: 
			 
CE-netmodule# show disks
CE-netmodule# show disks details


 
		   
		

 
		
Step 3   
		   Attach the external storage array to the Cisco content engine network module. For information on attaching an external storage array, see the Cisco Storage Array 6 Installation and Configuration Guide 
				 and the hardware documents in the 
			 Additional References.
		   
		

 
		
Step 4   
		   Restart the network module using either of the following commands:
		   
		    
			 
     
				
  •  
				   
					 reload 
				  --Use this command from CE CLI privileged EXEC mode.
				
    • 
 
			 

 
		   
		   

Example: 
			 
CE-netmodule# reload


 
		   
		    
			 
     
				
  •  
				   
					 service-module 
					 content-engine 
					 reload 
				  --Use this command from router CLI privileged EXEC mode.
				
    • 
 
			 

 
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 reload
Do you want to proceed with reload?[confirm]


 
		   
		

 
		
Step 5   
		   Configure the network module for IP address and default gateway, using Cisco IOS CE interface configuration mode on the router, as explained in the 
			 Configuring IP Addresses on the CE Network Module Interfaces.
		   
		

 
		
Step 6   
		   Confirm that the external storage array is detected by the network module by using either the 
			 show 
				disks command or the 
			 show 
				disks 
				detailscommand, as explained here:
		   
		    
			 
     
				
  •  Enter the 
				  show 
					 disks command in CE CLI privileged EXEC mode. The command output displays the file systems that are found on the network module. These file systems can exist on a single disk or can span multiple disks. You confirm the detection of the external storage array by noting whether the total disk space on all file systems has increased from the baseline that you noted in Step 2. The following example shows output from the 
				  show 
					 disks command:
				
    • 
 
			 

 
		   
		   

Example: 
			 
CE-netmodule# show disks
SYSFS    0.0GB      0.0%
CFS      0.0GB      0.0%
MEDIAFS  0.0GB      0.0%
ECDNFS   0.0GB      0.0%
FREE   113.7GB    100.0%


 
		   
		    
			 
     
				
  •  Enter the 
				  show 
					 disks 
					 details command in CE CLI privileged EXEC mode. The command output provides an entry for each disk detected. If the external storage array is detected, the number of entries in the 
				  show 
					 disks 
					 details command output increases from the number in the output that you saw when you used the commands in Step 2. The following example shows output from the 
				  show 
					 disks 
					 details command:
				
    • 
 
			 

 
		   
		   

Example: 
			 
CE-netmodule# show disks details
disk00:Normal          (h00 c00 i08 l00)    17364MB( 17.0GB)
        System use:              3317MB(  3.2GB)
        FREE:                   14046MB( 13.7GB)
disk01:Normal          (h00 c00 i09 l00)    17366MB( 17.0GB)
        disk01/00:SYSFS         17365MB( 17.0GB) mounted at /local1
        FREE:                       0MB(  0.0GB)
disk02:Normal          (h00 c00 i10 l00)    17366MB( 17.0GB)
        disk02/00:SYSFS         17365MB( 17.0GB) mounted at /local2
        FREE:                       0MB(  0.0GB)
disk03:Normal          (h00 c00 i11 l00)    17366MB( 17.0GB)
        disk03/00:SYSFS         17365MB( 17.0GB) mounted at /local3
        FREE:                       0MB(  0.0GB)
disk04:Normal          (h00 c00 i11 l00)    17366MB( 17.0GB)
        disk03/00:SYSFS         17365MB( 17.0GB) mounted at /local4
        FREE:                       0MB(  0.0GB)
disk05:Normal          (h00 c00 i13 l00)    17366MB( 17.0GB)
        disk05/00:SYSFS         17365MB( 17.0GB) mounted at /local5
        FREE:                       0MB(  0.0GB)


 
		   
		    
			 
 If the external storage array is not detected by the network module, verify that the SCSI cables are connected and that the external storage array is operational. For more information on troubleshooting the external storage array, refer to the Cisco Storage Array 6 Installation and Configuration Guide .
			 

 
		   
		

 
		
Step 7   
		   In CE CLI privileged EXEC mode, enter the 
			 disk 
				recover command to create disk partitions on the external storage array for use by the network module.
		   
		   

Example: 
			 
CE-netmodule# disk recover


 
		   
		

 
		
Step 8   
		   In CE CLI privileged EXEC mode, enter the 
			 copy 
				ftp 
				install{hostname | 
			 ip-address} 
			 remotefiledir 
			 remotefilename command to download the Cisco ACNS software image from the FTP server to the external storage array and to the onboard Strata Flash memory on the network module. In the following example, the FTP server is server4, the directory is /images, and the image name is acns_file:
		   
		   

Example: 
			 
CE-netmodule# copy ftp install server4 /images acns_file


 
		   
		

 
		
Step 9   
		   Restart the network module as described in Step 4 of this procedure.
		   
		

 
		
Step 10   
		   Configure the Cisco ACNS software as required. For more information, refer to documentation for the appropriate version of Cisco ACNS software at the following URL: 
			 http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/
		   
		

 
	 












Installing Cisco ACNS Software from Compact Flash


 
		
 If you do not have an FTP server available in the network or if the CE network module does not have network connectivity, you can install the ACNS software image from an external compact Flash card, Cisco part number MEM-256CF-x.x-K9=, where x.x is the Cisco ACNS software version.
		

 
	 

SUMMARY STEPS 
		
1.    Insert the compact Flash card in the compact Flash slot on the front of the network module.
		  

 
		
2.    Restart the CE network module using either of the following commands:
		  

 
		
3.    After the CE network module has booted up, enter CE CLI privileged EXEC mode and list the files in compact Flash memory, using the following commands:
		  

 
		
4.    Copy the Cisco ACNS software image to the CE network module by using the following command from CE CLI privileged EXEC mode. Substitute the actual image name from your 
			 dir command output for the file name "acns4xx.img" in the following example.
		  

 
		
5.    Restart the network module as described in Step 2 of this procedure. 
		  

 
		
6.    Configure the CE with the Cisco ACNS software. For more information, refer to the appropriate version of Cisco ACNS software at the following URL: 
			 http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/ .
		  

 
	 
DETAILED STEPS
 
		
Step 1   
		   Insert the compact Flash card in the compact Flash slot on the front of the network module.
		   
		

 
		
Step 2   
		   Restart the CE network module using either of the following commands:
		   
		    
			 
     
				
  •  Use the 
					 reload command from CE CLI privileged EXEC mode.
				
    • 
 
			 

 
		   
		   

Example: 
			 
CE-netmodule# reload


 
		   
		    
			 
     
				
  •  Use the 
				  service-module 
					 content-engine 
					 reload command from router CLI privileged EXEC mode.
				
    • 
 
			 

 
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 reload
Do you want to proceed with reload?[confirm]


 
		   
		

 
		
Step 3   
		   After the CE network module has booted up, enter CE CLI privileged EXEC mode and list the files in compact Flash memory, using the following commands:
		   
		    
			 
     
				
  1.  
				   
					 service-module 
					 content-engine 
				   
				   
					 slot 
				   
				   
					 / 
				   
				   
					 unit 
				   
				   
					  
					  
					 session 
				   
				
    2. 
 
				
  2.  
				   
					 enable 
				   
				
    3. 
 
				
  3.  
				   
					 cd 
					 flash 
				   
				
    4. 
 
				
  4.  
				   
					 dir 
				   
				
    5. 
 
			 

 
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 session
Trying 10.10.10.1, 2129 ... Open
CE-netmodule con now available
Press RETURN to get started!

 
		   
		    
			 
CE-netmodule> enable

 
			 
Password:

 
		   
		   

Example: 
			 
CE-netmodule# cd flash1
CE-netmodule# dir


 
		   
		    
			 
 The 
				dir command displays the list of files in the compact Flash memory. The following example shows the output from a 
				dir command.
			 

 
		   
		   

Example: 
			 
CE-netmodule# dir
      size          time of last change             name
--------------  -------------------------          -----------
      12290784  Mon Jan  7 03:22:38 1980           sys422.img
     105990784  Mon Jan  7 03:22:38 1980           acns422.img


 
		   
		

 
		
Step 4   
		   Copy the Cisco ACNS software image to the CE network module by using the following command from CE CLI privileged EXEC mode. Substitute the actual image name from your 
			 dir command output for the file name "acns4xx.img" in the following example.
		   
		   

Example: 
			 
CE-netmodule# copy compactflash install acns4xx.img


 
		   
		

 
		
Step 5   
		   Restart the network module as described in Step 2 of this procedure. 
		   
		

 
		
Step 6   
		   Configure the CE with the Cisco ACNS software. For more information, refer to the appropriate version of Cisco ACNS software at the following URL: 
			 http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/ .
		   
		

 
	 














Recovering a Corrupted ACNS Software Image


 
		
 An ACNS software image can become corrupted if there is a power failure or other interruption during an operation in which the image is being written to the CE network module's onboard StrataFlash memory, such as during an ACNS software installation or upgrade.
		

 
		
 If the ACNS software image on the CE network module's onboard StrataFlash memory is corrupted, the network module boots up using a special rescue image that is also located on the onboard StrataFlash memory. The rescue image serves a limited purpose, which is simply to download a fresh Flash component of the ACNS software image and write it to the onboard StrataFlash memory. The rescue image can download this Flash component either from an FTP server on the network or from an external compact Flash card that is installed locally.
		

 
		
 If you are going to download the Flash component from an FTP server on the network, the Flash component must first be downloaded to an FTP server from a CD-ROM or from Cisco.com over the network. This procedure and the procedure to download the image from the FTP server to the onboard Flash memory are the same as those described in the 
		  Installing Cisco ACNS Software from a CD-ROM or from Cisco.com. 
		

 
		
 If you do not have an FTP server available in the network or if the network module does not have network connectivity, you can recover the ACNS software image from a special external compact Flash card, Cisco part number MEM-256CF-x.x-K9=, where x.x is the Cisco ACNS software version number.
		

 
	 

SUMMARY STEPS 
		
1.    When a failure occurs in the ACNS software image, the CE network module automatically enters rescue mode during its bootup procedure and the following messages are displayed. 
		  

 
		
2.    Type 
			 4 to reboot the system so that the system detects the compact Flash card you installed in Step 1.
		  

 
		
3.    After the system reboots, the rescue mode messages are displayed again. At the "enter choice" prompt, type 
			 2 to read the image from the compact Flash and write it to the onboard StrataFlash memory.
		  

 
		
4.    At the next prompt, enter the directory name for the image file on the external compact Flash card. In the example below, the image file is found in the root directory (/) on the compact Flash.
		  

 
		
5.    At the next prompt, enter the filename for the image file on the external compact Flash card. The filename has the format ACNS-x.x.x-K9.sysimg, where x.x.x is the ACNS version number. In the following example, the version is ACNS 5.0.3 and the image is named ACNS-5.0.3-K9.sysimg:
		  

 
		
6.    The system provides feedback as it reads the file and then asks you to write the image to the onboard Flash memory. Type 
			 yes to write the image.
		  

 
		
7.    After the ACNS software has been written to the CE network module's onboard Flash memory, the system will ask if you want to reload the network module. Type 
			 yes to reload.
		  

 
		
8.    After the reload is complete, you can continue to configure ACNS software on the network module. Previous ACNS software configurations are saved.
		  

 
	 
DETAILED STEPS
 
		
Step 1   
		   When a failure occurs in the ACNS software image, the CE network module automatically enters rescue mode during its bootup procedure and the following messages are displayed. 
		   
		    
			 
 Insert the compact Flash card in the compact Flash slot on the front of the network module.
			 

 
		   
		   

Example: 
			 
Freeing initrd memory:208k freed
VFS:Mounted root (ext2 filesystem).
Freeing unused kernel memory:448k freed
This is the rescue image.  The purpose of this software is to let
you install a new system image onto your system's boot flash
device.  This software has been invoked either manually
(if you entered `***' to the bootloader prompt) or has
been invoked by the bootloader if it discovered that your system image
in flash had been corrupted.
You now have the following options.
  1.  Download an image from the network and install it to flash
  2.  Insert a DOS formatted compact flash with a good system
      image on it, and install this image to flash. (The
      system must be rebooted to detect the compact flash).
  3.  Display diagnostic information about this system
  4.  Reboot the system
enter choice:


 
		   
		

 
		
Step 2   
		   Type 
			 4 to reboot the system so that the system detects the compact Flash card you installed in Step 1.
		   
		

 
		
Step 3   
		   After the system reboots, the rescue mode messages are displayed again. At the "enter choice" prompt, type 
			 2 to read the image from the compact Flash and write it to the onboard StrataFlash memory.
		   
		

 
		
Step 4   
		   At the next prompt, enter the directory name for the image file on the external compact Flash card. In the example below, the image file is found in the root directory (/) on the compact Flash.
		   
		   

Example: 
			 
Please enter the directory containing the image file on the compact flash:
[Enter directory on compact flash (e.g. /)]: /


 
		   
		

 
		
Step 5   
		   At the next prompt, enter the filename for the image file on the external compact Flash card. The filename has the format ACNS-x.x.x-K9.sysimg, where x.x.x is the ACNS version number. In the following example, the version is ACNS 5.0.3 and the image is named ACNS-5.0.3-K9.sysimg:
		   
		   

Example: 
			 
Please enter the file name of the system image file on the compact flash:
[Enter filename on compact flash]: ACNS-5.0.3-K9.sysimg


 
		   
		

 
		
Step 6   
		   The system provides feedback as it reads the file and then asks you to write the image to the onboard Flash memory. Type 
			 yes to write the image.
		   
		   

Example: 
			 
Trying to access the file //ACNS-5.0.3-K9.sysimg...
Read 12290784 byte image file
A new system image has been read from compact flash.
You should write it to system flash at this time.
Please enter 'yes' below to indicate that this is what you want to do:
yes


 
		   
		

 
		
Step 7   
		   After the ACNS software has been written to the CE network module's onboard Flash memory, the system will ask if you want to reload the network module. Type 
			 yes to reload.
		   
		

 
		
Step 8   
		   After the reload is complete, you can continue to configure ACNS software on the network module. Previous ACNS software configurations are saved.
		   
		

 
	 












Installing a Hot-Swappable CE Network Module (Cisco 3660 and Cisco 3745 Only)


 
		
 Some Cisco modular access routers allow you to replace network modules without switching off the router or affecting the operation of other interfaces. This feature is often called 
		  hot-swapping 
		   or online insertion and removal (OIR). 
		   Hot-swapping of network modules provides uninterrupted operation to network users, maintains routing information, and ensures session preservation. 
		

 
		

Note
 OIR is supported only on Cisco 3660 and Cisco 3745 platforms. 
		

 
		

Caution
 
		  
 Unlike other network modules, CE network modules use hard disks. Online removal of disks without proper shutdown can result in file system corruption and might render the disk unusable. The operating system on the CE network module must be shut down in an orderly fashion before the network module is removed.
		  

 
		

 
		

Caution
 
		  
 Cisco routers support hot-swapping with similar modules only. If you remove a network module, install another module exactly like it in its place. 
		  

 
		

 
		
 For a description of informational messages and error messages that may appear on the console during this procedure, refer to the hardware installation guide for your type of router.
		

 
	 

SUMMARY STEPS 
		
1.    Initiate a CE network module console access session using the 
			 service-module 
				content-engine 
				session command. The following example shows the starting of a session for the CE network module in slot 4.
		  

 
		
2.    Save the CE running configuration using the following command from CE CLI privileged EXEC mode.
		  

 
		
3.    Exit the CE network module console access session by pressing 
			 Control-Shift-6, followed by 
			 x.
		  

 
		
4.    On the router, clear the CE console access session using the following command.
		  

 
		
5.    Perform a graceful halt of the CE network module disk drive using the following command.
		  

 
		
6.    Shut down the CE interface.
		  

 
		
7.    Unplug all network interface cables from the CE network module. 
		  

 
		
8.    Loosen the two captive screws holding the CE network module in the chassis slot.
		  

 
		
9.    Slide the CE network module out of the slot.
		  

 
		
10.    Align the replacement CE network module with the guides in the chassis slot, and slide it gently into the slot.
		  

 
		
11.    Push the module into place until you feel its edge connector mate securely with the connector on the backplane.
		  

 
		
12.    Reconnect the network interface cables previously removed in Step 7.
		  

 
		
13.    Check that the network module LEDs are lit and that the Power and Enable LEDs on the front panel are also lit. This inspection ensures that connections are secure and that the new unit is operational.
		  

 
		
14.    Initiate a CE network module console access session using the following command.
		  

 
		
15.    Restore the CE running configuration by using the following command from CE CLI privileged EXEC mode.
		  

 
		
16.    Exit the CE network module console access session by pressing 
			 Control-Shift-6, followed by 
			 x.
		  

 
		
17.    On the router, clear the CE console access session using the following command.
		  

 
	 
DETAILED STEPS
 
		
Step 1   
		   Initiate a CE network module console access session using the 
			 service-module 
				content-engine 
				session command. The following example shows the starting of a session for the CE network module in slot 4.
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 session
Trying 10.10.10.1, 2129 ... Open
CE-netmodule con now available
Press RETURN to get started!
CE-netmodule> enable
Password:
CE-netmodule#


 
		   
		

 
		
Step 2   
		   Save the CE running configuration using the following command from CE CLI privileged EXEC mode.
		   
		   

Example: 
			 
CE-netmodule# copy running-config tftp //server12/configs/rtr11-confg


 
		   
		

 
		
Step 3   
		   Exit the CE network module console access session by pressing 
			 Control-Shift-6, followed by 
			 x.
		   
		

 
		
Step 4   
		   On the router, clear the CE console access session using the following command.
		   
		    
			 
Router# service-module content-engine 4/0 session clear

 
			 

 
		   
		

 
		
Step 5   
		   Perform a graceful halt of the CE network module disk drive using the following command.
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 shutdown 


 
		   
		

 
		
Step 6   
		   Shut down the CE interface.
		   
		   

Example: 
			 
Router(config)# interface content-engine 4/0
Router(config-if)# shutdown
Router(config-if)# exit


 
		   
		

 
		
Step 7   
		   Unplug all network interface cables from the CE network module. 
		   
		

 
		
Step 8   
		   Loosen the two captive screws holding the CE network module in the chassis slot.
		   
		

 
		
Step 9   
		   Slide the CE network module out of the slot.
		   
		

 
		
Step 10   
		   Align the replacement CE network module with the guides in the chassis slot, and slide it gently into the slot.
		   
		    
			 
Note    If the router is not fully configured with network modules, make sure that blank panels fill the unoccupied chassis slots to provide proper airflow. 
			 

 
		   
		

 
		
Step 11   
		   Push the module into place until you feel its edge connector mate securely with the connector on the backplane.
		   
		

 
		
Step 12   
		   Reconnect the network interface cables previously removed in Step 7.
		   
		

 
		
Step 13   
		   Check that the network module LEDs are lit and that the Power and Enable LEDs on the front panel are also lit. This inspection ensures that connections are secure and that the new unit is operational.
		   
		

 
		
Step 14   
		   Initiate a CE network module console access session using the following command.
		   
		   

Example: 
			 
Router# service-module content-engine 4/0 session
Trying 10.10.10.1, 2129 ... Open
CE-netmodule con now available
Press RETURN to get started!
CE-netmodule> enable
Password: 
CE-netmodule#


 
		   
		

 
		
Step 15   
		   Restore the CE running configuration by using the following command from CE CLI privileged EXEC mode.
		   
		   

Example: 
			 
CE-netmodule# copy tftp running-config //server12/configs/rtr11-confg


 
		   
		

 
		
Step 16   
		   Exit the CE network module console access session by pressing 
			 Control-Shift-6, followed by 
			 x.
		   
		

 
		
Step 17   
		   On the router, clear the CE console access session using the following command.
		   
		    
			 
Router# service-module content-engine 1/0 session clear

 
			 

 
		   
		

 
	 












Troubleshooting Tips



    

To diagnose problems with CE network module operation, use the commands and actions in this section.


    
    
      
  • 
Display configured commands using the show running-configcommand. Make sure that a new interface called Content-Engine is displayed and that the IP addresses listed for the CE are correct. The Content-Engine interface is the router-side interface for the internal Ethernet segment between the router and the CE, and it is the only CE interface that is displayed in the output of the show running-config command. The other two CE interfaces appear as "service-modules" under the Content-Engine interface. For more information on CE interfaces, refer to the CE Network Module Interfaces.
    • 

      
  • 
Display software version information using the show version command. The following output example shows a CE network module and its terminal line listed in the interface information section:
    • 

    


    
Router# show version
Cisco Internetwork Operating System Software 
IOS (tm) C2600 Software (C2600-IS-M), Version 12.2(11)YT, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 1986-2002 by cisco Systems, Inc.
Compiled Thu 12-Sep-02 21:34 by axpo
Image text-base: 0x80008098, data-base: 0x818AF44C
ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
router-2621 uptime is 10 minutes
System returned to ROM by power-on
System image file is "flash:c2600-is-mz"
cisco 2621 (MPC860) processor (revision 0x200) with 60416K/5120K bytes of memory.
Processor board ID JAD051516TV (4151953086)
M860 processor: part number 0, mask 49
Bridging software.
X.25 software, Version 3.0.0.
2 FastEthernet/IEEE 802.3 interface(s)
1 terminal line(s)
1 cisco content engine(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read/Write)
Configuration register is 0x0



    
    
      
  • 
Display the basic interface configuration and the number of packets transmitted, output rate, and related information using the show interfaces content-engine command.
    • 

      
  • 
Display information for controllers that are associated with the CE network module using the show controllers content-engine command.
    • 

      
  • 
Display the status of the content engine, as well as the hardware configuration, software version, and related information, using the service-module content-engine status command.
    • 

      
  • 
Display hardware installed on the router using the show diagcommand. The following output example shows a CE network module in router slot 1:
    • 

    


    
Router# show diag 1
Slot 1:
        Content Engine Port adapter, 1 port
        Port adapter is analyzed 
        Port adapter insertion time unknown
        EEPROM contents at hardware discovery:
        Hardware Revision        : 1.0
        Top Assy. Part Number    : 800-20382-01
        Board Revision           : A0
        Deviation Number         : 0-0
        Fab Version              : 02
        PCB Serial Number        : JAB060605C4
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        EEPROM format version 4
        EEPROM contents (hex):
          0x00: 04 FF 40 03 81 41 01 00 C0 46 03 20 00 4F 9E 01
          0x10: 42 41 30 80 00 00 00 00 02 02 C1 8B 4A 41 42 30
          0x20: 36 30 36 30 35 43 34 03 00 81 00 00 00 00 04 00
          0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x40: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
        20GB IDE Disc Daughter Card
        Hardware Revision        : 1.0
        Top Assy. Part Number    : 800-20520-01
        Board Revision           : A0
        Deviation Number         : 0-0
        Fab Version              : 02
        PCB Serial Number        : JAB060605A5
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        EEPROM format version 4
        EEPROM contents (hex):
          0x00: 04 FF 40 03 83 41 01 00 C0 46 03 20 00 50 28 01
          0x10: 42 41 30 80 00 00 00 00 02 02 C1 8B 4A 41 42 30
          0x20: 36 30 36 30 35 41 35 03 00 81 00 00 00 00 04 00
          0x30: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x40: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
          0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF



    
    
      
  • 
After exiting a CE console access session, remember to use the service-module content-engine session clear command to terminate the session.
    • 

      
  • 
Check LEDs that are associated with the CE network module. The link activity LED should light up whenever packets are being transmitted through the port. 
    • 

      
  • 
If Cisco Discovery Protocol (CDP) is enabled in the CE network module, use the debug cdp packet command to see the CDP packets going across the interfaces every 60 seconds, which is the default. Use the show cdp neighborcommandto see all the Cisco devices that have CDP enabled and that are in the same segment.
    • 

      
  • 
Enable the debug scp all command to check the communication between the Cisco IOS software and the CE:
    • 

    


    
Router# debug scp all
*Mar  1 00:28:34.371: scp-tx: SA:0F/01 DA:01/01 Op:0012 Sq:0024 Ln:0004 I:00
*Mar  1 00:28:34.371: 000: 02 5A 00 00                                     .Z..            
*Mar  1 00:28:34.371: scp-rx: SA:01/01 DA:0F/01 Op:0012 Sq:0024 Ln:0004 I:01
*Mar  1 00:28:34.371: 000: 02 5A 00 00                                     .Z.. 


  












Configuration Examples for the Content Engine Network Module for Caching and Content Delivery


 
	 
 This section provides the following configuration examples:
	 

 
	 

Note
 IP addresses and host names used in examples are fictitious.
	 

 
  


Unnumbered IP Address Example


 
	 
 The figure below shows how the CE interfaces are configured using the unnumbered IP address method. In this example, the router interface to the internal router-CE link is configured using the 
		ip 
		  unnumbered command to save IP address space. No new subnet needs to be defined for the internal network between the router and the CE. This configuration makes the CE interface that is pointing toward the Cisco IOS software an extension of the Fast Ethernet interface 0/0 of the router, which has an IP address of 10.10.10.2. When this method is used, a static IP route must be defined. 
	 

 
	 
Figure 3Unnumbered IP Address Example


 
		 
		 
	 

 
	 
.
.
.
!
interface Content-Engine 1/0
 ip unnumbered FastEthernet 0/0
 service-module ip address 10.10.10.10 255.255.255.0
 service-module external ip address 172.18.12.20 255.255.255.0
 service-module ip default-gateway 10.10.10.2
!
ip route 10.10.10.10 255.255.255.255 Content-Engine 1/0
!
.
.
.


 
  










Three IP Address Example


 
	 
 The figure below shows the configuration for the three IP address method. In this example, both the CE interface to the internal router-CE link and the router interface to the same link are on the 172.18.12.0/24 subnet. The external port of the CE network module is in the 10.3.0.0/16 subnet. Notice that there is no connection between the internal router interface to the CE and the external router interface in this configuration. 
	 

 
	 
Figure 4Three IP Address Example


 
		 
		 
	 

 
	 
.
.
.
!
interface Content-Engine 4/0
 ip address 172.18.12.1 255.255.255.0
 service-module ip address 172.18.12.2 255.255.255.0
 service-module external ip address 10.3.208.190 255.255.0.0
 service-module ip default-gateway 10.3.0.1
!
.
.

 
  












Additional References



    

      

For additional information related to the Content Engine Network Module for Caching and Content Delivery, refer to the following references:


    


    
Related Documents

      
      


          
          
          
            

              
                

Related Topic


              		

              
                

Document Title


              		

            


          

          
            

              
                

Related content delivery products


              		

              
                

                  Content Delivery Networking Products
                


              		

            


            

              
                

Cisco ACNS software


              		

              
                

Refer to


                

documentation for the appropriate version of Cisco ACNS software at the following URL: 


                

                  http://www.cisco.com/univercd/cc/td/doc/product/webscale/uce/
                


              		

            


            

              
                

E-CDN application software within a content delivery network


              		

              
                

                  
                    Cisco CDN Software Enterprise User Guide
                  
                


              		

            


            

              
                

Cisco Content Delivery Networks


              		

              
                

                  
                    The Cisco Content Delivery Network Solution for the Enterprise
                  
                


              		

            


            

              
                

Cisco Content Networking technologies (web site)


              		

              
                

                  
                    Cisco Content Networking Technology Solution
                  
                


              		

            


            

              
                

Overview and installation of Content Delivery Networking products


              		

              
                

                  
                    Cisco Content Delivery Networking Products Getting Started Guide
                  
                


              		

            


            

              
                

Installing CE network modules


              		

              
                

                  
                    Connecting CE Network Modules for Caching and Content Delivery
                  
                


              		

            


            

              
                

Installing CE network module expansion modules


              		

              
                

                  
                    Installing Expansion Modules on the Cisco CE Network Module for Caching and Content Delivery
                  
                


              		

            


            

              
                

Installing CE network module memory modules


              		

              
                

                  
                    Installing SODIMM Memory Modules in Cisco Network Modules for Caching and Content Delivery
                  
                


              		

            


            

              
                

Installing network modules


              		

              
                

                  
                    Cisco Network Modules Hardware Installation Guide
                  
                


              		

            


            

              
                

Installing storage arrays


              		

              
                

                  
                    Cisco Storage Array 6 Installation and Configuration Guide
                  
                


              		

            


            

              
                

Cisco 2600 series


              		

              
                

                  Cisco 2600 series product documentation
                


              		

            


            

              
                

Cisco 3600 series


              		

              
                

                  Cisco 3600 series product documentation
                


              		

            


            

              
                

Cisco 3700 series


              		

              
                

                  Cisco 3700 series product documentation
                


              		

            


          

        




    


    
Standards

      
      


          
          
          
            

              
                

Standards1


              		

              
                

Title


              		

            


          

          
            

              
                

No new or modified standards are supported by this feature, and support for existing standards has not been modified by this feature.


              		

              
                

--


              		

            


          

        




1  Not all supported standards are listed.

    


    
MIBs

      
      


          
          
          
            

              
                

MIBs2


              		

              
                

MIBs Link


              		

            


          

          
            

              
                
    
                  
  • 
CISCO-CONTENT-ENGINE-MIB
    • 

                  
  • 
CISCO-ENTITY-ASSET-MIB
    • 

                  
  • 
ENTITY-MIB
    • 

                  
  • 
MIB-2
    • 

                  
  • 
CDP-MIB
    • 

                


              		

              
                

To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL:


                

http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml



              		

            


          

        




2  Not all supported MIBs are listed.

      

To locate and download MIBs for selected platforms, Cisco IOS releases, and feature sets, use Cisco MIB Locator found at the following URL:


      

        http://tools.cisco.com/ITDIT/MIBS/servlet/index
      


      

If Cisco  MIB Locator does not support the MIB information that you need, you can also obtain a list of supported MIBs and download MIBs from the Cisco  MIBs page at the following URL:


      

        http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
      


      

To access Cisco MIB Locator, you must have an account on Cisco.com. If you have forgotten or lost your account information, send a blank e-mail to cco-locksmith@cisco.com. An automatic check will verify that your e-mail address is registered with Cisco.com. If the check is successful, account details with a new random password will be e-mailed to you. Qualified users can establish an account on Cisco.com by following the directions found at this URL:


      

        http://www.cisco.com/register
      


    


    
RFCs

      
      


          
          
          
            

              
                

RFCs3


              		

              
                

Title


              		

            


          

          
            

              
                

No new or modified RFCs are supported by this feature, and support for existing RFCs has not been modified by this feature.


              		

              
                

--


              		

            


          

        




3  Not all supported RFCs are listed.

    


    
Technical Assistance

      
      


          
          
          
            

              
                

Description


              		

              
                

Link


              		

            


          

          
            

              
                

Technical Assistance Center (TAC) home page, containing 30,000 pages of searchable technical content, including links to products, technologies, solutions, technical tips, tools, and lots more. Registered Cisco.com users can log in from this page to access even more content.


              		

              
                

                  http://www.cisco.com/public/support/tac/home.shtml
                


              		

            


          

        




    


  










Command Reference



    

The following new and modified commands are pertinent to this feature. To see the command pages for these commands and other commands used with this feature, go to the Cisco IOS Master Commands List
, Release 12.4, at 
http://www.cisco.com/univercd/cc/td/doc/product/software/ios124/124mindx/
124index.htm. 



    
New Commands

      
      
    
        
  • 
          
            service-module
            content-engine
            reload
          
        
    • 

        
  • 
          
            service-module
            content-engine
            reset
          
        
    • 

        
  • 
          
            service-module
            content-engine
            session
          
        
    • 

        
  • 
          
            service-module
            content-engine
            session
            clear
          
        
    • 

        
  • 
          
            service-module
            content-engine
            shutdown
          
        
    • 

        
  • 
          
            service-module
            content-engine
            status
          
        
    • 

        
  • 
          
            service-module
            external
            ip
            address
          
        
    • 

        
  • 
          
            service-module
            ip
            address
          
        
    • 

        
  • 
          
            service-module
            ip
            default-gateway
          
        
    • 

        
  • 
          
            show
            controllers
            content-engine
          
        
    • 

        
  • 
          
            show
            interfaces
            content-engine
          
        
    • 

      


    


    
Modified Command

      
      
    
        
  • 
          
            interface
          
        
    • 

      


    


  










Glossary



    

      
        ACNS
      --Cisco Application and Content Networking System. ACNS is a software platform that unifies the Cisco cache software and Cisco enterprise content delivery network (E-CDN) software into a single software platform. ACNS software allows you to access caching application features and E-CDN application features from a single software base. ACNS software is supported on content engines, content distribution managers, and content routers. 


    

      
        CDM
      --Cisco Content Distribution Manager. Management program that provides a browser-based user interface to configure and monitor content engines and content routers and to control and manage content switching, content distribution and delivery, and content services.


    

      
        CDN
      --content delivery network. Content delivery networks help accelerate the delivery of advanced content by deploying five key components: content switching, content routing, content edge nodes, content distribution and management, and intelligent network services. Content edge nodes are content engines that are typically placed in the branch office, like the CE network module.


    

      
        CE
      --content engine. Edge appliance for delivering live or on-demand streaming media and other rich file formats to the desktop.


    

      
        E-CDN
      --enterprise content delivery network. Enterprise CDNs (also known as intranet CDNs) apply caching and multicasting technology in a corporate LAN/WAN environment to distribute video and other content-rich files in ways that help minimize WAN bottlenecks, while taking advantage of the relatively abundant bandwidth of the LANs close to users.


    

      
        WCCP
      --Web Cache Communication Protocol. Developed by Cisco Systems, WCCP specifies interactions between one or more routers (or Layer 3 switches) and one or more web caches. The purpose of the interaction is to establish and maintain the transparent redirection of selected types of traffic flowing through a group of routers. The selected traffic is redirected to a group of web caches with the aim of optimizing resource usage and lowering response times.


  












1  Not all supported standards are listed.
2  Not all supported MIBs are listed.
3  Not all supported RFCs are listed.
© 2012 Cisco Systems, Inc. All rights reserved.