The Network Analysis Module (NM-NAM) feature is a network module that monitors and analyzes network traffic for a system using extended Remote Monitoring (RMON) standards, RMON2, and other Management Information Bases (MIBs).
Note
The Network Analysis Module (NAM) is available in multiple hardware forms for some Cisco routers and Catalyst switches. This document applies only to the NAM for branch routers, also known as modular access, multiservice, or integrated services routersNAM provides Layer 2 to Layer 7 visibility into network traffic for remote troubleshooting, real-time traffic analysis, application performance monitoring, capacity planning, and managing network-based services, including quality of service (QoS) and Voice over IP (VoIP). The NAM Traffic Analyzer is software that is embedded in the NM-NAM that gives you browser-based access to the RMON1, RMON2, DSMON, and voice monitoring features of the NAM.
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see
Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Prerequisites for the Network Analysis Module (NM-NAM)
Install Cisco IOS Release 12.3(4)XD, Cisco IOS Release 12.3(7)T, or a later release.
Install the NM-NAM network module. Make sure that the network module is properly seated and that the EN (enable) and PWR (power) LEDs come on. Refer to the
Cisco Network Modules Hardware Installation Guide.
Restrictions for the Network Analysis Module (NM-NAM)
General Restrictions
Cisco IOS Release 12.3(4)XD, Cisco IOS Release 12.3(7)T, or a later release is required.
Network Analysis Module Release 3.2 or a later release is required.
Only one NM-NAM can be installed in the router at any time.
SNMPv3 is not supported.
Online insertion and removal (OIR), or hot swapping network modules, is supported on some platforms.
Traffic Monitoring Restrictions for the Internal NAM Interface
The following restrictions apply only to traffic that is monitored through the internal NAM interface:
Only IP traffic can be monitored.
The NAM Traffic Analyzer (web GUI) provides Layer 3 and higher layer information about the original packets. The Layer 2 header is modified by the router when it forwards the packets to the NAM, so the Layer 2 information that the NAM records is not applicable to the original packets.
When Network Address Translation (NAT) is used, the router forwards packets containing the NAT "inside" network addresses to the NAM.
When access control lists are used:
Packets dropped by an inbound access list are not forwarded to the NAM.
Packets dropped by an outbound access list are forwarded to the NAM for analysis.
The NAM does
not monitor the following:
Packets that are dropped by the Cisco IOS because of errors
Outbound IP multicast, IP broadcast, and User Datagram Protocol (UDP) flooding packets
Packets in generic routing encapsulation (GRE) tunnels
The Fast Ethernet connection is available to the network module.
3
ACT
There is activity on the Fast Ethernet connection.
4
PWR
Power is available to the network module.
5
EN
The module has passed self-test and is available to the router.
NAM User Interfaces
The NAM has three user interfaces:
Web GUI--The NAM Traffic Analyzer provides a browser-based GUI to configure and monitor the NAM.
CLI--A NAM-specific command-line interface is used to configure NAM. It can be accessed through a NAM console session from the router or through Telnet or Secure Shell Protocol (SSH) over the network.
SNMP--The NAM supports SNMPv1 and SNMPv2c access to the RMON MIBs. Note that the NAM Simple Network Management Protocol (SNMP) agent is separate from the SNMP agent in the router; the agents use different IP addresses and have independent communities.
NAM Network Interfaces
The NAM uses three interfaces for communication (see the figure below):
Note
The NM-NAM does not have an external console port. To access the NAM console, open a NAM console session from the router or use Telnet or SSH over the network. The lack of an external console port on the NM-NAM means that the initial boot configuration is possible only through the router.
The Analysis-Module interface is used to access the NAM console for the initial configuration. After configuring the NAM IP parameters, the Analysis-Module interface is typically used only during NAM software upgrades and while troubleshooting if the NAM Traffic Analyzer is inaccessible.
Visible only to the Cisco IOS software on the router, the Analysis-Module interface is an internal Fast Ethernet interface on the router that connects to the internal NAM interface. The Analysis-Module interface is connected to the router's Peripheral Component Interconnect (PCI) backplane, and all configuration and management of the Analysis-Module interface must be performed from the Cisco IOS CLI.
Internal NAM Interface
The internal NAM interface is used for monitoring traffic that passes through router interfaces. You can also select the internal NAM interface as the management interface for the NAM.
Visible only to the NAM software on the NM-NAM, the internal NAM interface is the Fast Ethernet interface on the NM-NAM that connects to the Analysis-Module interface on the router. The internal NAM interface is connected to the PCI bus on the NM-NAM, and all configuration and management of the internal NAM interface must be performed from the NAM software.
External NAM Interface
The external NAM interface can be used to monitor LAN traffic. You can also select the external NAM interface as the management interface for the NAM.
Visible only to the NAM software on the NM-NAM, the external NAM interface is the Fast Ethernet interface on the NM-NAM faceplate (see the first figure above). The external NAM interface supports data requests and data transfers from outside sources, and it provides direct connectivity to the LAN through an RJ-45 connector. All configuration and management of the external NAM interface must be performed from the NAM software.
NM-NAM Operating Topologies and IP Address Assignments
Management Traffic--Choose One of the NM-NAM Interfaces
Select either the internal or external NAM interface to handle management traffic such as IP, HTTP, SNMP, Telnet, and SSH. You cannot send management traffic through both NAM interfaces at the same time.
How you assign IP addresses on the NAM network interfaces depends on which NAM interface, internal or external, you use for management traffic. See the following sections:
Internal NAM Interface for Management Traffic--How to Assign IP Addresses
If you select the internal NAM interface to handle management traffic:
For the Analysis-Module interface (in Cisco IOS CLI), assign an IP address from a routable subnet. To conserve IP address space, you can configure the Analysis-Module as an IP unnumbered interface and borrow the IP address of another router interface, such as a Fast Ethernet or loopback interface. The borrowed IP address must come from a routable subnet.
For the NAM system (in NAM CLI), assign an IP address from the same subnet that is assigned to the Analysis-Module interface.
External NAM Interface for Management Traffic--How to Assign IP Addresses
If you select the external NAM interface to handle management traffic:
For the Analysis-Module interface (in Cisco IOS CLI), we recommend that you use the IP unnumbered interface configuration to borrow the IP address of another router interface. The subnet does not need to be routable.
For the NAM system (in NAM CLI), assign an IP address from the subnet that is connected to the external NAM interface.
Monitored Traffic--Use One or Both of the NM-NAM Interfaces
You can use either or both the internal and external NAM interfaces for monitoring traffic:
The same interface can be used for both management traffic and monitored traffic simultaneously.
Internal NAM Interface--Monitor LAN and WAN Traffic
When you monitor traffic through the internal NAM interface, you must enable NAM packet monitoring on each router interface that you want to monitor. NAM packet monitoring uses Cisco Express Forwarding (CEF) to send a copy of each packet that is received or sent out of the router interface to the NAM.
Note
Some restrictions apply when monitoring traffic through the internal NAM interface. See the "Traffic Monitoring Restrictions for the Internal NAM Interface" section.
Monitoring traffic through the internal NAM interface enables the NAM to see any encrypted traffic after it has already been decrypted by the router.
Note
Traffic sent through the internal NAM interface--and the router's Analysis-Module interface--uses router resources such as CPU, SDRAM bandwidth, and backplane PCI bandwidth. Therefore, we recommend that you use the internal NAM interface to monitor WAN interfaces, and use the external NAM interface to monitor LAN interfaces.
External NAM Interface--Monitor LAN Traffic
Monitoring traffic through the external NAM interface does not impact router resources. Therefore, we recommend that you use the external NAM interface to monitor LAN traffic.
To monitor ports on Ethernet switching cards or modules (NM-16ESW-x , NMD-36ESW-x , HWIC-4ESW, or HWIC-D-9ESW), configure a Switched Port Analyzer (SPAN) session whose destination is the Ethernet switch port that connects to the external NAM interface. For more information about configuring SPAN for these cards and modules, refer to the following documents:
In each of the following topologies, the router's LAN interface is monitored through the external NAM interface, and the router's WAN interface is monitored through the internal NAM interface:
Until you properly configure the NAM IP parameters, the only way to access the NAM CLI is by opening a NAM console session from the router.
NAM CLI Prompt
The NAM CLI prompt is
root@nam-system-hostname#
. For example, if the NAM system hostname is configured as "nam1," then the NAM CLI prompt appears as
root@nam1#
.
If the NAM system hostname has not yet been configured, the NAM CLI prompt is
root@localhost#
.
Basic NAM CLI Commands
The table below briefly describes the basic NAM CLI commands that are used for initial configuration and maintenance of the NM-NAM. For a complete description of all NAM CLI commands, refer to the
Network Analysis Module Command Reference for your NAM software release.
Note
Although NAM CLI commands appear similar to Cisco IOS commands, the commands described in the table below operate in the NAM CLI only.
Table 2
Basic NAM CLI Commands
NAM CLI Command
Purpose
exsessionon
Enables outside logins (Telnet).
exsessiononssh
Enables outside logins (SSH).
ipaddress
Sets the system IP address.
ipbroadcast
Sets the system broadcast address.
ipdomain
Sets the system domain name.
ipgateway
Sets the system default gateway address.
iphost
Sets the system hostname.
iphttpsecureserverenable
Enables the secure HTTP server.
iphttpserverenable
Enables the HTTP server.
ipinterfaceexternal
Selects the external NAM interface for management traffic.
ipinterfaceinternal
Selects the internal NAM interface for management traffic.
ipnameserver
Sets the system name server address.
passwordroot
Sets a new password to access the root (read/write) level of NAM.
patch
Downloads and installs a software patch.
ping
Checks connectivity to a network device.
showip
Displays the NAM IP parameters.
NAM CLI Context-Sensitive Help
The table below shows how to use the NAM CLI context-sensitive help.
Table 3
NAM CLI Context-Sensitive Help Commands
NAM CLI Command
Purpose
(prompt
)# ?
or
(prompt
)# help
Displays a list of commands available for the command mode.
(prompt
)# abbreviated-command-entry
<Tab>
Lists commands in the current mode that begin with a particular character string.
(prompt
)# command?
Lists the available syntax options (arguments and keywords) for the command.
(prompt
)# commandkeyword?
Lists the next available syntax option for the command.
How to Configure and Manage the Network Analysis Module (NM-NAM)
Configuring the Analysis-Module Interface on the Router
This section describes how to configure the Analysis-Module interface on the router. For general information on the Analysis-Module interface, see the
Analysis-Module Interface.
(Optional) Configures an interface, and enters interface configuration mode.
Perform this step if you plan to configure the Analysis-Module interface as an IP unnumbered interface.
This step configures the router interface (such as a loopback or Fast Ethernet interface) whose IP address you plan to borrow for the IP unnumbered Analysis-Module interface.
Step 4
ipaddressip-addressmask
Example:
Router(config-if)# ip address 10.20.30.40 255.255.255.0
(Optional) Sets an IP address and mask for the interface.
Perform this step if you plan to configure the Analysis-Module interface as an IP unnumbered interface.
If you plan to use the internal NAM interface for management traffic, this IP address must come from a routable subnet.
Step 5
interfaceanalysis-moduleslot/0
Example:
Router(config)# interface analysis-module 1/0
Configures the Analysis-Module interface.
This is the Fast Ethernet interface on the router that is connected to the internal NM-NAM interface.
Step 6
Do one of the following:
ipunnumberedinterfacenumber
ipaddressip-addressmask
Example:
Router(config-if)# ip unnumbered loopback 0
Example:
Router(config-if)# ip address 10.20.30.40 255.255.255.0
Configures the Analysis-Module interface as IP unnumbered and specifies the interface whose IP address is borrowed by the Analysis-Module interface.
or
Sets an IP address and mask on the Analysis-Module interface.
Use the
ipunnumbered command if you performed Step 3 and Step 4.
Step 7
noshutdown
Example:
Router(config-if)# no shutdown
Activates the Analysis-Module interface.
Step 8
end
Example:
Router(config-if)# end
Example:
Router#
Returns to privileged EXEC mode.
Step 9
Do one of the following:
showipinterfacebrief
showrunning-config
Example:
Router# show ip interface brief
Example:
Router# show running-config
Displays the IP addresses and summary status of the interfaces.
or
Displays the contents of the currently running configuration file.
Verify that you properly configured the Analysis-Module interface.
If you configured the Analysis-Module interface as IP unnumbered, then use the
showrunning-config command to verify proper configuration of both the Analysis-Module interface and the interface whose IP address you borrowed for the Analysis-Module interface.
What to Do Next
Tip
To avoid losing your configuration at the next system reload or power cycle, save the running configuration to the startup configuration by entering the
copyrunstart command in privileged EXEC mode.
Configuring the Analysis-Module Interface--Routable Subnet: Example
In the following example, the Analysis-Module interface is configured with a routable IP address. The NM-NAM is installed in router slot 2.
Configuring the Analysis-Module Interface--IP Unnumbered with Routable Subnet: Example
In the following example, the Analysis-Module interface is IP unnumbered and borrows the IP address of the Fast Ethernet interface. The IP address is from a routable subnet, and the NM-NAM is installed in router slot 1.
!
interface FastEthernet 0/0
ip address 209.165.202.129 255.255.255.224
no shutdown
!
interface Analysis-Module 1/0
ip unnumbered FastEthernet 0/0
no shutdown
!
Configuring the Analysis-Module Interface--IP Unnumbered with Subnet That Is Not Routable: Example
In the following example, the Analysis-Module interface is IP unnumbered and borrows a loopback interface IP address that is not routable. The NM-NAM is installed in router slot 3.
!
interface loopback 0
ip address 10.20.30.40 255.255.255.0
!
interface Analysis-Module 3/0
ip unnumbered loopback 0
no shutdown
!
Sample Output for the show ip interface brief Command
Router# show ip interface brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 172.20.105.213 YES NVRAM up up
FastEthernet0/1 172.20.105.53 YES NVRAM up up
Analysis-Module2/0 10.1.1.1 YES manual up up
Router#
Disabling AAA Login Authentication on the NAM Console Line
If you configured authentication, authorization, and accounting (AAA) on your router, then you may have to log in twice to open a NAM console session from the router: first with your AAA username and password, and second with the NAM login and password.
If you do not want to log in twice to open a NAM console session from the router, then disable AAA login authentication on the router's NAM console line by performing the steps in this section.
Note, however, that if your router contains both the NM-NAM and the NM-CIDS, the Cisco intrusion detection system network module, then AAA can be a useful tool for centrally controlling access to both network modules. For information about AAA, refer to the
Cisco IOS Security Configuration Guide.
SUMMARY STEPS
1.enable
2.configureterminal
3.aaaauthenticationloginlist-namenone
4.linenumber
5.loginauthenticationlist-name
6.end
7.showrunning-config
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
configureterminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
aaaauthenticationloginlist-namenone
Example:
Router(config)# aaa authentication login nam none
Creates a local authentication list.
The
none keyword specifies no authentication for this list.
Step 4
linenumber
Example:
Router(config)# line 33
Enters line configuration mode for the line to which you want to apply the authentication list.
The
number value is determined by the slot number in which the NM-NAM is installed:
number = (32 x
slot ) + 1
Step 5
loginauthenticationlist-name
Example:
Router(config-line)# login authentication nam
Applies the authentication list to the line.
Specify the list name that you configured in Step 3.
Step 6
end
Example:
Router(config-line)# end
Example:
Router#
Returns to privileged EXEC mode.
Step 7
showrunning-config
Example:
Router# show running-config
Displays the contents of the currently running configuration file.
Verify that you configured the local authentication list and applied it to the line associated with the NM-NAM.
Opening and Closing a NAM Console Session from the Router
This section describes how to open and close a NAM console session from the router.
SUMMARY STEPS
1.enable
2.service-moduleanalysis-moduleslot/0session
3.Do one of the following:
Press
Return.
If a username prompt appears, then log in with your AAA username and password.
4. At the login prompt, enter
root.
5.Do one of the following:
At the password prompt, enter your password.
If you have not changed the password from the factory-set default, enter
root as the root password.
6. Perform the tasks that you need to perform in the NAM CLI. When you want to end the NAM console session and return to the Cisco IOS CLI, complete Step 7 through Step 10.
7.exit
8. Hold
Ctrl-Shift and press
6. Release all keys, and then press
x.
If you cannot open a NAM console session, make sure that the NAM console line is clear by first entering the
service-moduleanalysis-moduleslot/0sessionclear command in privileged EXEC mode.
Step 3
Do one of the following:
Press
Return.
If a username prompt appears, then log in with your AAA username and password.
Example:
Trying 10.1.1.1, 2065 ... Open
Example:
<Press Return>
Example:
Example:
Cisco Network Analysis Module (NM-NAM)
Example:
Example:
nam1.cisco.com login:
Example:
Trying 10.1.1.1, 2065... Open
Example:
User Access Verification
Example:
Example:
Username: myaaausername
Example:
Password: <myaaapassword>
Example:
Cisco Network Analysis Module (NM-NAM)
Example:
Example:
nam1.cisco.com login:
Activates the NAM console line.
or
Completes AAA login authentication and activates the NAM console line.
Step 4
At the login prompt, enter
root.
Example:
login: root
Accesses the root (read/write) level of NAM.
Step 5
Do one of the following:
At the password prompt, enter your password.
If you have not changed the password from the factory-set default, enter
root as the root password.
Example:
Password: <root>
--
Step 6
Perform the tasks that you need to perform in the NAM CLI. When you want to end the NAM console session and return to the Cisco IOS CLI, complete Step 7 through Step 10.
This section describes how to configure the NM-NAM to establish network connectivity and configure IP parameters. This task must be performed from the NAM CLI. For more advanced NAM configuration, use the NAM Traffic Analyzer (web GUI) or refer to the
Network Analysis Module Command Reference for your NAM software release.
In the following example, the external NAM interface is used for management traffic. The HTTP server and Telnet access are enabled. The resulting NAM CLI prompt is
root@nam1.cisco.com#
.
!
ip address 172.20.105.215 255.255.255.192
!
ip host "nam1"
!
ip domain "cisco.com"
!
ip gateway 172.20.105.210
!
ip broadcast 10.255.255.255
!
ip nameserver 209.165.201.29
!
ip interface external
!
ip http server enable
!
exsession on
!
Checking Network Connectivity with Ping: Example
root@nam1.cisco.com# ping 172.20.105.213
PING 172.20.105.213 (172.20.105.213) from 172.20.105.215 : 56(84) bytes of data.
64 bytes from 172.20.105.213: icmp_seq=0 ttl=255 time=353 usec
64 bytes from 172.20.105.213: icmp_seq=1 ttl=255 time=289 usec
64 bytes from 172.20.105.213: icmp_seq=2 ttl=255 time=284 usec
64 bytes from 172.20.105.213: icmp_seq=3 ttl=255 time=283 usec
64 bytes from 172.20.105.213: icmp_seq=4 ttl=255 time=297 usec
--- 172.20.105.213 ping statistics ---
5 packets transmitted, 5 packets received, 0% packet loss
round-trip min/avg/max/mdev = 0.283/0.301/0.353/0.028 ms
root@nam1.cisco.com#
Sample Output for the show ip NAM CLI Command
root@nam1.cisco.com# show ip
IP address: 172.20.105.215
Subnet mask: 255.255.255.192
IP Broadcast: 10.255.255.255
IP Interface: External
DNS Name: nam1.cisco.com
Default Gateway: 172.20.105.210
Nameserver(s): 209.165.201.29
HTTP server: Enabled
HTTP secure server: Disabled
HTTP port: 80
HTTP secure port: 443
TACACS+ configured: No
Telnet: Enabled
SSH: Disabled
root@nam1.cisco.com#
Configuring a Static Route to the NAM Through the Analysis-Module Interface
This section describes how to ensure that the router can route packets to the NAM by configuring a static route through the Analysis-Module interface.
If you select the internal NAM interface to handle management traffic, then configuring a static route to the NAM through the Analysis-Module interface is:
Required when the Analysis-Module interface is IP unnumbered.
Recommended when the Analysis-Module interface is assigned a unique IP address.
If you select the external NAM interface to handle management traffic, then you do not need to perform this task. Proceed to the What to Do Next.
This section describes how to enable NAM packet monitoring on router interfaces that you want to monitor through the internal NAM interface.
When you enable NAM packet monitoring on an interface, CEF sends an extra copy of each IP packet that is received or sent out on that interface to the NAM through the Analysis-Module interface on the router and the internal NAM interface.
SUMMARY STEPS
1.enable
2.configureterminal
3.ipcef
4.Do one of the following:
interfacetypeslot/port
interfacetypeslot/wic-slot/port
5.analysis-modulemonitoring
6. Repeat Step 4 and Step 5 for each interface that you want the NAM to monitor through the internal NAM interface.
7.end
8.showrunning-config
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
configureterminal
Example:
Router# configure terminal
Enters global configuration mode.
Step 3
ipcef
Example:
Router(config)# ip cef
Enables the CEF switching path.
Step 4
Do one of the following:
interfacetypeslot/port
interfacetypeslot/wic-slot/port
Example:
Router(config)# interface serial 0/0
Selects an interface for configuration.
Step 5
analysis-modulemonitoring
Example:
Router(config-if)# analysis-module monitoring
Enables NAM packet monitoring on the interface.
Step 6
Repeat Step 4 and Step 5 for each interface that you want the NAM to monitor through the internal NAM interface.
--
Step 7
end
Example:
Router(config-if)# end
Example:
Router#
Returns to privileged EXEC mode.
Step 8
showrunning-config
Example:
Router# show running-config
Displays the contents of the currently running configuration file.
Verify that you enabled the CEF switching path and enabled packet monitoring on the correct interfaces.
In the following example, NAM packet monitoring is enabled on the serial interfaces:
interface Serial 0/0
ip address 172.20.105.213 255.255.255.240
ip route-cache flow
speed auto
full-duplex
analysis-module monitoring
no mop enabled
!
interface Serial 0/1
ip address 172.20.105.53 255.255.255.252
ip route-cache flow
duplex auto
speed auto
analysis-module monitoring
!
interface Analysis-Module 2/0
ip address 10.1.1.1 255.255.255.0
hold-queue 60 out
!
This section describes how to enable and access the NAM Traffic Analyzer (web GUI).
Before You Begin
Make sure that your web browser supports your NAM software release. For a list of supported browsers, refer to the NAM software release notes.
If you plan to use the HTTP secure server (HTTPs), then you must first download and install the NAM software K9 crypto patch. Until you install the patch, the iphttpsecure commands are disabled. You can download the NAM software K9 crypto patch from Cisco.com.
Note
You can use the HTTP server or the HTTP secure server, but you cannot use both simultaneously.
root@nam1# ip http server enable
Enabling HTTP server...
No web users are configured.
Please enter a web administrator user name [admin]: <cr>
New password: <pswd>
Confirm password: <pswd>
User admin added.
Successfully enabled HTTP server.
root@nam1#
Accessing the NAM Traffic Analyzer: Example
The figure below shows the NAM Traffic Analyzer login page that appears when you enter the NAM system IP address or hostname as the URL in a web browser.
Figure 6
Sample NAM Traffic Analyzer Login Page
What to Do Next
For information on the NAM Traffic Analyzer, refer to the User Guide for the Network Analysis Module Traffic Analyzer
for your NAM software release. This document is available on Cisco.com and as online help within the NAM Traffic Analyzer application.
Changing the NAM Root Password
This section describes how to set a new password to access the root (read/write) level of NAM, where you can enter NAM CLI commands. The factory-set default root password is "root".
Resetting the NAM Root Password to the Default Value
This section describes how to reset the NAM root password to the default value of "root". Use this procedure when you cannot remember the NAM root password but need to access the NAM CLI.
Note
This procedure requires that you reload the NAM software.
SUMMARY STEPS
1.enable
2.service-moduleanalysis-moduleslot/0reload
3.y
4.service-moduleanalysis-moduleslot/0session
5. When prompted, enter
*** to change the boot configuration.
6.bootflash
7. When prompted to select from the helper menu, enter
6.
8. When prompted to select from the helper menu, enter
r.
9.y
10. Hold
Ctrl-Shift and press
6. Release all keys, and then press
x.
11.disconnect
12. Press
Enter.
DETAILED STEPS
Command or Action
Purpose
Step 1
enable
Example:
Router> enable
Enables privileged EXEC mode.
Enter your password if prompted.
Step 2
service-moduleanalysis-moduleslot/0reload
Example:
Router# service-module analysis-module 1/0 reload
Reloads the software on the NM-NAM.
Step 3
y
Example:
Do you want to proceed with reload?[confirm] y
Confirms that you want to proceed with the NAM software reload.
Perform this step immediately after reloading the NAM software.
If you cannot open a NAM console session, make sure that the NAM console line is clear by first entering the
service-moduleanalysis-moduleslot/0sessionclear command in privileged EXEC mode.
Step 5
When prompted, enter
*** to change the boot configuration.
Example:
Please enter '***' to change boot configuration: ***
Interrupts the boot loader.
Enter
*** immediately after the prompt appears.
If you do not enter
*** in time to interrupt the boot loader, then the NAM login prompt eventually appears. Complete Step 10 through Step 12 to return to the Cisco IOS CLI on the router, and then retry this task, starting with Step 2.
Step 6
bootflash
Example:
ServicesEngine boot-loader> boot flash
Loads the NAM helper image.
This command is entered in the boot loader CLI, which is separate from the NAM CLI and Cisco IOS CLI.
Step 7
When prompted to select from the helper menu, enter
6.
Example:
Selection [12345678rh]: 6
Selects the menu option to reset the root password to the default value of "root".
Step 8
When prompted to select from the helper menu, enter
r.
Example:
Selection [12345678rh]:r
Selects the menu option to exit the helper and reset the NAM.
Step 9
y
Example:
About to exit and reset Services Engine.
Example:
Are you sure? [y/N] y
Confirms that you want to exit the helper and reset the NAM.
This time, ignore the prompt to enter
***.
Step 10
Hold
Ctrl-Shift and press
6. Release all keys, and then press
x.
Example:
login: <suspend keystroke>
Example:
Router#
Suspends and closes the Telnet session.
Step 11
disconnect
Example:
Router# disconnect
Disconnects a line.
Step 12
Press
Enter.
Example:
Closing connection to 10.20.30.40 [confirm] <Enter>
Resetting the NAM Root Password to the Default Value: Example
Router# service-module analysis-module 1/0 reload
Do you want to proceed with reload?[confirm] y
Trying to reload Service Module Analysis-Module1/0.
Router# service-module analysis-module 1/0 session
Trying 172.20.104.87, 2033 ... Open
.
<debug output omitted>
.
Booting from flash..., please wait.
[BOOT-ASM]
7
Please enter '***' to change boot configuration: ***
ServicesEngine Bootloader Version :1.0.6aN
ServicesEngine boot-loader> boot flash
.
<debug output omitted>
.
==============================================================================
Cisco Systems, Inc.
Services engine helper utility for NM-NAM
Version 1.1(1) [200311111641]
-----
Main menu
1 - Download application image and write to HDD
2 - Download application image and reformat HDD
3 - Download bootloader and write to flash
4 - Download helper and write to flash
5 - Display software versions
6 - Reset application image CLI passwords to default
7 - Change file transfer method (currently ftp/http)
8 - Show upgrade log
9 - Send Ping
r - Exit and reset Services Engine
h - Exit and shutdown Services Engine
Selection [123456789rh]: 6
Restored default CLI passwords of application image.
==============================================================================
Cisco Systems, Inc.
Services engine helper utility for NM-NAM
Version 1.1(1) [200311111641]
-----
Main menu
1 - Download application image and write to HDD
2 - Download application image and reformat HDD
3 - Download bootloader and write to flash
4 - Download helper and write to flash
5 - Display software versions
6 - Reset application image CLI passwords to default
7 - Change file transfer method (currently ftp/http)
8 - Show upgrade log
9 - Send Ping
r - Exit and reset Services Engine
h - Exit and shutdown Services Engine
Selection [123456789rh]: r
About to exit and reset Services Engine.
Are you sure? [y/N] y
INITSending all processes the TERM signal...
Sending all processes the KILL signal...
Unmounting file systems:
Please stand by while rebooting the system...
Restarting system.
.
<debug output omitted>
.
Cisco Network Analysis Module (NM-NAM)
nam1.cisco.com login: <suspend keystroke>
Router#
Router# disconnect
Closing connection to 10.1.1.1 [confirm] <Enter>
Deleting login session
Troubleshooting Tips
If you have trouble opening a NAM console session from the router, make sure that the NAM console line is clear by entering the service-moduleanalysis-moduleslot/0sessionclear command in privileged EXEC mode.
Opening and Closing a Telnet or SSH Session to the NAM
This section describes how to open and close a Telnet or SSH session to the NAM. This task is not commonly performed, because you would typically use the NAM Traffic Analyzer (web GUI) to monitor and maintain the NAM. If, however, you cannot access the NAM Traffic Analyzer, then you might want to use Telnet or SSH to troubleshoot from the NAM CLI.
If your NM-NAM is not properly configured for Telnet or SSH access (see the following Prerequisites section), then you can open a Telnet session to the router in which the NM-NAM is installed, and then open a NAM console session from the router. See the
Opening and Closing a NAM Console Session from the Router.
Before You Begin
Configure the NAM system IP address. Optionally, set the NAM system hostname. See the
Configuring the NM-NAM.
Verify NAM network connectivity by performing one of the following ping tests:
From a host beyond the gateway, ping the NAM system IP address.
From the NAM CLI, ping the NAM system default gateway.
Telnet Prerequisites
SSH Prerequisites
Install the NAM software K9 crypto patch, which you can download from Cisco.com.
If you have not changed the password from the factory-set default, enter
root as the root password.
4. Perform the tasks that you need to perform in the NAM CLI. When you want to end the Telnet or SSH session to the NAM and return to the Cisco IOS CLI, complete Step 5 and Step 6 .
5.exit
6.logout
DETAILED STEPS
Command or Action
Purpose
Step 1
Do one of the following:
telnet {ip-address |
hostname}
ssh {ip-address |
hostname}
Example:
Router# telnet 10.20.30.40
Example:
Router# ssh 10.20.30.40
Logs in to a host that supports Telnet.
or
Starts an encrypted session with a remote networking device.
Use the NAM system IP address or NAM system hostname.
Step 2
At the login prompt, enter
root.
Example:
login: root
Accesses the root (read/write) level of NAM.
Step 3
Do one of the following:
At the password prompt, enter your password.
If you have not changed the password from the factory-set default, enter
root as the root password.
Example:
Password: root
--
Step 4
Perform the tasks that you need to perform in the NAM CLI. When you want to end the Telnet or SSH session to the NAM and return to the Cisco IOS CLI, complete Step 5 and Step 6 .
NAM application image on the hard drive--Source of the NAM Traffic Analyzer and NAM CLI
Helper image in flash memory--Used to recover or upgrade NAM software images
Bootloader image in flash memory--Used to specify whether to boot the NAM application image or the helper image
Types of NAM Software Upgrades
NAM software upgrades are available in two forms:
Patches--Incremental updates to software releases that are installed with the patch NAM CLI command. Patches are available only for the NAM application image.
Images--Full image releases that are installed from the helper image. Full image upgrades are typically used to update the NAM application image, but if necessary and recommended by technical support, you can also use the helper image to upgrade the bootloader image or helper image.
Prerequisites
Download the NAM software image from Cisco.com, and copy the image to an FTP server.
Perform one of the following tasks in this section, depending on whether you are adding a patch to your NAM application or are performing a full software image upgrade:
Upgrading the NAM Software--Patch
Perform this task to add a patch to your NAM application image. This task is performed from the NAM CLI.
Use the first option, which includes the password, if the FTP server does not allow anonymous users.
If you use the second option, enter your password when prompted.
Remember to perform this task in the NAM CLI.
Step 2
showpatches
Example:
root@nam1.cisco.com# show patches
Displays all installed patches.
Verify that your patch was successfully installed.
Upgrading the NAM Software--Full Image
Perform this task to upgrade one of your NAM software images to a new release. This task is performed from the NAM CLI.
SUMMARY STEPS
1.reboot
2.y
3. When prompted, enter
*** to change the boot configuration.
4.bootflash
5. When prompted to select from the helper menu, enter
1or
2.
6.ftp://ip-address/path/nam-image-file
7.y
8.r
9.y
DETAILED STEPS
Command or Action
Purpose
Step 1
reboot
Example:
root@nam1.cisco.com# reboot
Shuts down and restarts the NAM.
Remember to perform this task in the NAM CLI.
Step 2
y
Example:
Reboot the NAM? (Y/N) [N]: y
Confirms that you want to reboot the NAM.
After you confirm the reboot, the NAM displays a series of messages as it stops processes, shuts down, and then restarts.
Step 3
When prompted, enter
*** to change the boot configuration.
Example:
Please enter '***' to change boot configuration: ***
Interrupts the boot loader.
Enter
*** immediately after the prompt appears.
If you do not enter the
*** in time to interrupt the boot loader, then return to Step 1 and try again.
Step 4
bootflash
Example:
ServicesEngine boot-loader> boot flash
Loads the NAM helper image.
This command is entered in the boot loader CLI, which is separate from the NAM CLI and Cisco IOS CLI.
Step 5
When prompted to select from the helper menu, enter
1or
2.
Example:
Selection [12345678rh]: 1
Example:
Selection [12345678rh]: 2
Selects the menu option to download the NAM software image onto the NM-NAM internal memory.
Option 1 preserves all configuration and report data while installing the NAM software image.
Option 2 reformats the NM-NAM hard drive, deleting all report data and NAM software configurations, except the basic IP configuration. Although useful for recovering a corrupted hard drive, Option 2 should be used with caution or when recommended by technical support.
The helper menu also has an option (7) to change the file transfer method from the default FTP method. Before performing Step 5 , you may enter 7 to select the TFTP transfer method. Because many TFTP servers have problems transferring files as large as the NAM application image, we recommend that you use the default FTP method.
Step 6
ftp://ip-address/path/nam-image-file
Example:
Download NAM application image via ftp and write to HDD
Example:
URL of application image []: ftp://172.20.98.136/dir1/dir2/nam-image.bin.gz
Specifies the FTP location and filename of the NAM software image.
Step 7
y
Example:
Do you want to proceed installing it? [y/N] y
Confirms that you want to install the specified NAM software image.
Step 8
r
Example:
Selection [12345678rh]:r
Selects the menu option to exit the helper and reset the NAM.
Step 9
y
Example:
About to exit and reset Services Engine.
Example:
Are you sure? [y/N] y
Confirms that you want to exit the helper and reset the NAM.
This time, ignore the prompt to enter
***.
Examples
This section provides the following examples:
Upgrading the NAM Software--Patch: Example
Router> enable
Password: <password>
Router#
Router# service-module analysis-Module 1/0 session
Trying 172.20.104.86, 2033 ... Open
Cisco Network Analysis Module (NM-NAM)
nam1.cisco.com login: root
Password: <password>
Terminal type:vt100
Cisco Network Analysis Module (NM-NAM) Console, 3.2(0.10)
Copyright (c) 1999-2003 by cisco Systems, Inc.
WARNING! Default password has not been changed!
root@nam1.cisco.com# patch ftp://person@examplehost/dir/subdir/nam-app.3-2.cryptoK9.patch.1-0.bin
Proceeding with installation. Please do not interrupt.
If installation is interrupted, please try again.
Downloading nam-app.3-2.cryptoK9.patch.1-0.bin. Please wait...
Password for person@examplehost: <mypwd>
ftp://person@examplehost/dir/subdir/nam-app.3-2.cryptoK9.patch.1-0.bin
(1K)
/usr/local/nam/patch/wor [########################] 1K | 104.43K/s
1894 bytes transferred in 0.02 sec (102.35k/sec)
Verifying nam-app.3-2.cryptoK9.patch.1-0.bin. Please wait...
Patch nam-app.3-2.cryptoK9.patch.1-0.bin verified.
Applying /usr/local/nam/patch/workdir/nam-app.3-2.cryptoK9.patch.1-0.bin.
Please wait...
########################################### [100%]
########################################### [100%]
Patch applied successfully.
root@nam1.cisco.com# show patches
Tue Aug 31 21:04:28 2004 Patch:nam-app.3-2.strong-crypto-patchK9-1-0
Description:Strong Crypto Patch for NAM.
root@nam1.cisco.com#
Upgrading the NAM Software--Full Image: Example
Router> enable
Password: <password>
Router#
Router# service-module analysis-Module 1/0 session
Trying 172.20.104.86, 2033 ... Open
Cisco Network Analysis Module (NM-NAM)
nam1.cisco.com login: root
Password: <password>
Terminal type:vt100
Cisco Network Analysis Module (NM-NAM) Console, 3.2(0.10)
Copyright (c) 1999-2003 by cisco Systems, Inc.
WARNING! Default password has not been changed!
root@nam1.cisco.com#
root@nam1.cisco.com# reboot
Reboot the NAM? (Y/N) [N]: y
System reboot in process...
.
<debug output omitted>
.
Booting from flash..., please wait.
[BOOT-ASM]
7
Please enter '***' to change boot configuration: ***
ServicesEngine Bootloader Version :1.0.6-NAM
ServicesEngine boot-loader>
ServicesEngine boot-loader> boot flash
.
<debug output omitted>
.
==============================================================================
Cisco Systems, Inc.
Services engine helper utility for NM-NAM
Version 1.1(1) [200311111641]
-----
Main menu
1 - Download application image and write to HDD
2 - Download application image and reformat HDD
3 - Download bootloader and write to flash
4 - Download helper and write to flash
5 - Display software versions
6 - Reset application image CLI passwords to default
7 - Change file transfer method (currently ftp/http)
8 - Show upgrade log
9 - Send Ping
r - Exit and reset Services Engine
h - Exit and shutdown Services Engine
Selection [123456789rh]: 1
-----
Download NAM application image via ftp and write to HDD
URL of application image []: ftp://172.20.98.136/dir1/dir2/nam-image.bin.gz
Getting c6svc-nam.mainline-DAILY_20030825.bin.gz from 171.69.17.19 via ftp.
ftp://172.20.98.136/dir1/dir2/nam-image.bin.gz
(46389K)
- [########################] 46389K | 7421.38K/s
47502347 bytes transferred in 6.25 sec (7421.14k/sec)
upgrade.bin size:48241545
File transfer successful.
Checking upgrade.bin
Do you want to proceed installing it? [y/N] y
.
<debug output omitted>
.
Application image upgrade complete. You can boot the image now.
==============================================================================
Cisco Systems, Inc.
Services engine helper utility for NM-NAM
Version 1.1(1) [200311111641]
-----
Main menu
1 - Download application image and write to HDD
2 - Download application image and reformat HDD
3 - Download bootloader and write to flash
4 - Download helper and write to flash
5 - Display software versions
6 - Reset application image CLI passwords to default
7 - Change file transfer method (currently ftp/http)
8 - Show upgrade log
9 - Send Ping
r - Exit and reset Services Engine
h - Exit and shutdown Services Engine
Selection [123456789rh]: r
About to exit and reset Services Engine.
Are you sure? [y/N] y
Troubleshooting Tips
If you have trouble opening a NAM console session from the router, make sure that the NAM console line is clear by entering the service-moduleanalysis-moduleslot/0sessionclear command in privileged EXEC mode.
Configuration Examples for the Network Analysis Module (NM-NAM)
NAM Management Interface Is Internal and Analysis-Module Interface Is Assigned an IP Address Example
In this configuration example:
The internal NAM interface is used for management traffic.
IP addresses from the same routable subnet are assigned to the Analysis-Module interface and the NAM system.
A static route to the NAM through the Analysis-Module interface is configured.
The internal NAM interface is used to monitor WAN traffic on interface Serial 0/0, and the external NAM interface is used to monitor LAN traffic on interface Fast Ethernet 0/0.
The NM-NAM is installed in router slot 2.
The figure below shows the topology used in the example, and the following sections show the router and NAM configurations:
Figure 7
NAM Management Interface Is Internal and Analysis-Module Interface Is Assigned an IP Address
Callout
Interface
Location
1
Analysis-Module interface
Router internal
2
Internal NAM interface (management)
NM-NAM internal
3
External NAM interface
NM-NAM faceplate
4
Serial interface
WAN interface card (WIC)
5
Fast Ethernet interface
Router rear panel
Router Configuration (Cisco IOS Software)
!
ip cef
!
ip route 209.165.200.226 255.255.255.224 analysis-module 2/0
!
interface FastEthernet0/0
ip address 209.165.202.129 255.255.255.224
ip route-cache flow
speed auto
full-duplex
no mop enabled
no shutdown
!
interface Serial 0/0
encapsulation ppp
ip address 209.165.201.1 255.255.255.224
analysis-module monitoring
no shutdown
!
interface analysis-module 2/0
ip address 209.165.200.225 255.255.255.224
hold-queue 60 out
no shutdown
!
NAM Configuration (NAM Software)
!
ip address 209.165.200.226 255.255.255.224
!
ip host "nam1"
!
ip domain "cisco.com"
!
ip gateway 209.165.200.225
!
ip broadcast 10.255.255.255
!
ip nameserver 172.16.201.29
!
ip interface internal
!
ip http server enable
!
exsession on
!
NAM Management Interface Is Internal and Analysis-Module Interface Is IP Unnumbered Example
In this configuration example:
The internal NAM interface is used for management traffic.
IP addresses from the same routable subnet are assigned to the Analysis-Module interface and the NAM system.
To conserve IP address space, the Analysis-Module interface is configured as IP unnumbered to borrow the IP address of the Fast Ethernet interface.
A static route to the NAM through the Analysis-Module interface is configured.
The internal NAM interface is used to monitor WAN traffic on interface Serial 0/0, and the external NAM interface is used to monitor LAN traffic on interface Fast Ethernet 0/0.
The NM-NAM is installed in router slot 2.
The figure below shows the topology used in the example, and the following sections show the router and NAM configurations:
Figure 8
Sample Topology: NAM Management Interface Is Internal and Analysis-Module Interface Is IP Unnumbered
Callout
Interface
Location
1
Analysis-Module interface
Router internal
2
Internal NAM interface (management)
NM-NAM internal
3
External NAM interface
NM-NAM faceplate
4
Serial interface
WAN interface card (WIC)
5
Fast Ethernet interface
Router rear panel
Router Configuration (Cisco IOS Software)
!
ip cef
!
ip route 209.165.200.226 255.255.255.224 analysis-module 2/0
!
interface FastEthernet0/0
ip address 209.165.200.225 255.255.255.224
ip route-cache flow
speed auto
full-duplex
no mop enabled
no shutdown
!
interface Serial 0/0
encapsulation ppp
ip address 209.165.201.1 255.255.255.224
analysis-module monitoring
no shutdown
!
interface analysis-module 2/0
ip unnumbered FastEthernet0/0
no shutdown
hold-queue 60 out
!
NAM Configuration (NAM Software)
!
ip address 209.165.200.226 255.255.255.224
!
ip host "nam1"
!
ip domain "cisco.com"
!
ip gateway 209.165.200.225
!
ip broadcast 10.255.255.255
!
ip nameserver 172.16.201.29
!
ip interface internal
!
ip http server enable
!
exsession on
!
NAM Management Interface Is External and Analysis-Module Interface Is IP Unnumbered Example
In this configuration example:
The external NAM interface is used for management traffic.
The Analysis-Module interface is configured as IP unnumbered to borrow the IP address of the loopback interface.
The borrowed loopback interface IP address is not routable.
The NAM system is configured with an IP address from the LAN subnet that is connected to the external NAM interface.
The internal NAM interface is used to monitor WAN traffic on interface Serial 0/0, and the external NAM interface is used to monitor LAN traffic on interface Fast Ethernet 0/0.
The NM-NAM is installed in router slot 3.
The figure below shows the topology used in the example, and the following sections show the router and NAM configurations:
Figure 9
Sample Topology: NAM Management Interface Is External and Analysis-Module Interface Is IP Unnumbered
Callout
Interface
Location
1
Analysis-Module interface
Router internal
2
Internal NAM interface
NM-NAM internal
3
External NAM interface (management)
NM-NAM faceplate
4
Loopback interface
Router internal
5
Serial interface
WAN interface card (WIC)
6
Fast Ethernet interface
Router rear panel
Router Configuration (Cisco IOS Software)
!
ip cef
!
interface loopback 0
ip address 10.1.1.1 255.255.255.0
!
interface FastEthernet0/0
ip address 209.165.201.1 255.255.255.224
ip route-cache flow
speed auto
full-duplex
no mop enabled
no shutdown
!
interface Serial 0/0
encapsulation ppp
ip address 209.165.202.129 255.255.255.224
analysis-module monitoring
no shutdown
!
interface analysis-module 3/0
ip unnumbered loopback 0
hold-queue 60 out
no shutdown
!
NAM Configuration (NAM software)
!
ip address 209.165.201.2 255.255.255.224
!
ip host "nam1"
!
ip domain "cisco.com"
!
ip gateway 209.165.201.1
!
ip broadcast 10.255.255.255
!
ip nameserver 209.165.201.29
!
ip interface external
!
ip http server enable
!
exsession on
!
Additional References
The following sections provide references related to the Network Analysis Module (NM-NAM) feature.
Remote Network Monitoring MIB Extensions for Switch Networks Version 1.0
RFC 2819
Remote Network Monitoring Management Information Base
RFC 3273
Remote Network Monitoring Management Information Base for High Capacity Networks
RFC 3287
Remote Monitoring MIB Extensions for Differentiated Services
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, and tools. Registered Cisco.com users can log in from this page to access even more content.
Feature Information for Network Analysis Module (NM-NAM)
The following table provides release information about the feature or features described in this module. This table lists only the software release that introduced support for a given feature in a given software release train. Unless noted otherwise, subsequent releases of that software release train also support that feature.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to
www.cisco.com/go/cfn. An account on Cisco.com is not required.
Table 4
Feature Information for Network Analysis Module (NM-NAM)
Feature Name
Releases
Feature Information
Network Analysis Module (NM-NAM)
12.3(4)XD
This feature was introduced on the following platforms: Cisco 2600XM series, Cisco 2691, Cisco 3660, Cisco 3725, and Cisco 3745.
Network Analysis Module (NM-NAM)
12.3(7)T
This feature was integrated into Cisco IOS Release 12.3(7)T.
12.3(8)T4
This feature was implemented on the following platforms: Cisco 2811, Cisco 2821, and Cisco 2851.
12.3(11)T
This feature was implemented on the Cisco 3800 series.
Glossary
AAA--authentication, authorization, and accounting. Pronounced "triple a."
accesslist--A list kept by routers to control access to or from the router for a number of services (for example, to prevent packets with a certain IP address from leaving a particular interface on the router).
CEF--Cisco Express Forwarding.
DSMON--Differentiated Services Monitoring.
flooding--Traffic passing technique used by switches and bridges in which traffic received on an interface is sent out all the interfaces of that device except the interface on which the information was received originally.
GRE--generic routing encapsulation. Tunneling protocol developed by Cisco that can encapsulate a wide variety of protocol packet types inside IP tunnels, creating a virtual point-to-point link to Cisco routers at remote points over an IP internetwork. By connecting multiprotocol subnetworks in a single-protocol backbone environment, IP tunneling using GRE allows network expansion across a single-protocol backbone environment.
GUI--graphical user interface. A user environment that uses pictorial as well as textual representations of the input and the output of applications and the hierarchical or other data structure in which information is stored. Such conventions as buttons, icons, and windows are typical, and many actions are performed using a pointing device (such as a mouse). Microsoft Windows and the Apple Macintosh are prominent examples of platforms using a GUI.
IPmulticast--Routing technique that allows IP traffic to be propagated from one source to a number of destinations or from many sources to many destinations. Rather than sending one packet to each destination, one packet is sent to a multicast group identified by a single IP destination group address.
MIB--Management Information Base. Database of network management information that is used and maintained by a network management protocol, such as SNMP or Common Management Information Protocol (CMIP). The value of a MIB object can be changed or retrieved using SNMP or CMIP commands, usually through a GUI network management system. MIB objects are organized in a tree structure that includes public (standard) and private (proprietary) branches.
NAT--Network Address Translation. Mechanism for reducing the need for globally unique IP addresses. NAT allows an organization with addresses that are not globally unique to connect to the Internet by translating those addresses into globally routable address space. Also known as Network Address Translator
.
NetFlow--A feature of some routers that allows them to categorize incoming packets into flows. Because packets in a flow often can be treated in the same way, this classification can be used to bypass some of the work of the router and accelerate its switching operation.
PCI--Peripheral Component Interconnect. An industry local bus standard.
QoS--quality of service. Cisco IOS QoS technology lets complex networks control and predictably service a variety of networked applications and traffic types.
RMON--remote monitoring. MIB agent specification described in RFC 1271 that defines functions for the remote monitoring of networked devices. The RMON specification provides numerous monitoring, problem detection, and reporting capabilities.
SNMP--Simple Network Management Protocol. Network management protocol used almost exclusively in TCP/IP networks. SNMP provides a means to monitor and control network devices, and to manage configurations, statistics collection, performance, and security. SNMPv2c supports centralized and distributed network management strategies and includes improvements in the Structure of Management Information (SMI), protocol operations, management architecture, and security. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network.
SSH--Secure Shell Protocol. A protocol that provides a secure remote connection to a router through a Transmission Control Protocol (TCP) application.
UDP--User Datagram Protocol. Connectionless transport layer protocol in the TCP/IP protocol stack. UDP is a simple protocol that exchanges datagrams without acknowledgments or guaranteed delivery, requiring that error processing and retransmission be handled by other protocols. UDP is defined in RFC 768.
VoIP--Voice over IP. The capability to carry normal telephony-style voice over an IP-based Internet with POTS-like functionality, reliability, and voice quality. VoIP enables a router to carry voice traffic (for example, telephone calls and faxes) over an IP network. In VoIP, the digital signal processor (DSP) segments the voice signal into frames, which then are coupled in groups of two and stored in voice packets. These voice packets are transported using IP in compliance with ITU-T specification H.323.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL:
www.cisco.com/go/trademarks. Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
Any Internet Protocol (IP) addresses and phone numbers used in this document are not intended to be actual addresses and phone numbers. Any examples, command display output, network topology diagrams, and other figures included in the document are shown for illustrative purposes only. Any use of actual IP addresses or phone numbers in illustrative content is unintentional and coincidental.