Cisco uBR10012 Universal Broadband Router SIP and SPA Software Configuration Guide - Overview of the Cisco Wideband SPA [Cisco uBR10000 Series Universal Broadband Routers]

Table Of Contents

Overview of the Cisco Wideband SPA

Release History

Supported Features

Restrictions

Supported MIBs

SPA Architecture

Path of a Packet in the Ingress Direction

Path of a Packet in the Egress Direction

Displaying Cisco Wideband SPA Information

Examples of the show diag and show interface wideband-cable Commands

Overview of the Cisco Wideband SPA

This chapter provides an overview of the release history, and feature and Management Information Base (MIB) support for the Cisco Wideband SPA on the Cisco uBR10012 router.

This chapter includes the following sections:

•Release History

•Supported Features

•Restrictions

•Supported MIBs

•SPA Architecture

•Displaying Cisco Wideband SPA Information

Release History

Cisco IOS Release

Modification

12.3(23)BC

Added support for primary-capable SPA downstream channels.

12.3(21)BC

Support for the Cisco Wideband SPA on the Cisco Wideband SIP was introduced.

12.2(33)SCB

Support for the Cisco Wideband SPA on the Cisco SIP-600 was introduced.

12.2(33)SRA

The Multipoint Bridging feature was introduced on the Cisco 7600 SIP-400 on the Cisco 7600 series router and Catalyst 6500 series switch.

The EoMPLS VC Scaling feature was modified on the Cisco 7600 SIP-400 on the Cisco 7600 series router and Catalyst 6500 series switch.

12.2(33)SCF

Updated the document to include support for the DWDM-XFP-xx.xx.

Supported Features

The following is a list of some of the significant hardware and software features supported by each Cisco Wideband SPA:

•Up to 32 channel-bonded wideband channels per Cisco Wideband SPA

•Up to 24 radio frequence (RF) channels (Annex B) or 18 RF channels (Annex A) per Cisco Wideband SPA

•Cisco Wideband Cable for DOCSIS Network support

•Two Gigabit Ethernet ports (one of which is redundant) for link to edge QAM devices

•Traditional DOCSIS 1.x/2.0 upstream channels

•Primary-capable SPA downstream channels

•DOCSIS 1.x/2.0 modem support on primary-capable SPA downstream channels

•DOCSIS 1.x/2.0 modem support and legacy feature support on primary-capable SPA downstream channels

•Extensible MAC domain support via Channel Grouping Domain

•64 QAM and 256 QAM support

•6 MHz and 8 MHz support

•Euro-DOCSIS and J-DOCSIS support [Not sure]

•Baseline Privacy Interface(BPI)/BPI+ encryption

•Single-wide, half-height SPA form factor

•Small form-factor pluggable (SFP) modules that plug into the Gigabit Ethernet ports

•SFP module support for SX, LX/LH, and ZX optical fiber (1000BASE-SX, 1000BASE-LX/LH, 1000BASE-ZX)

–Standard Category 5 copper and RJ45 connections (1000BASE-T)

•Cisco IOS command set for wideband-channel configuration, provisioning, and maintenance

•Cisco IOS command set for wideband channel hardware monitoring, troubleshooting, and debugging

•MIB support

•Online insertion and removal (OIR)

•Multipoint Bridging

Restrictions

The following restrictions apply to the Cisco Wideband SPA for Cisco IOS Release 12.3(23)BC, Cisco IOS Release 12.2(33)SCA, and Cisco IOS Release 12.2(33)SCB:

•Voice call service flows are configurable only on wideband interfaces.

•Full DOCSIS QoS, including CIR support and downstream low latency service flows for voice, are configurable only on wideband interfaces.

•Dynamic services are configurable only on wideband interfaces.

•A wideband interface can only use RF channels from the same SPA.

•Scientific Atlanta DPC2505 and EPC2505 wideband cable modems support multicast traffic on the primary downstream channel only. These modems do not support multicast traffic on wideband downstream channels.

•Currently only data services are supported.

Question: Are there other restrictions for the SPA that need to be listed here?

Supported MIBs

The following MIBs are supported in Cisco IOS Release 12.3(23)BC and later for the Cisco uBR10012 router and the Cisco Wideband SIP and Cisco Wideband SPA:

The following MIBS have been introduced in Cisco IOS Release 12.3(23)BC:

•DOCS-DSG-IF-MIB

•DTI-MIB

The following MIBS have been modified for Cisco IOS Release 12.3(23)BC:

•CISCO-CABLE-SPECTRUM-MIB

•CISCO-DOCS-EXT-MIB

•DOCS-IF-MIB

•DOCS-BPI-PLUS-MIB

•ENTITY-MIB

•IF-MIB

The following MIBS continue to be supported in Cisco IOS Release 12.3(23)BC:

•CISCO-CABLE-WIDEBAND-MIB

•CISCO-VENDORTYPE-OID-MIB

For more information about MIB support on a Cisco uBR10012 router, refer to the Cisco CMTS Universal Broadband Router MIB Specifications Guide at the following URL:

http://www.cisco.com/en/US/docs/cable/cmts/mib/reference/guide/ubrmibv5.html

For information about MIBs associated with edge QAM devices or wideband cable modems, refer to the vendor documentation.

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 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:

https://tools.cisco.com/RPF/register/register.do

SPA Architecture

This section provides an overview of the architecture of the Wideband SPA and describes the path of a packet in the ingress and egress directions. Some of these areas of the architecture are referenced in the SPA software and can be helpful to understand when troubleshooting or interpreting some of the SPA CLI and show command output.

Every incoming and outgoing packet on the Gigabit Ethernet SPAs goes through the physical (PHY) SFP optics, Media Access Control (MAC), and ASIC devices.

Path of a Packet in the Ingress Direction

The following steps describe the path of an ingress packet through the Gigabit Ethernet SPAs:

1. The PHY SFP optics device receives incoming frames on a per-port basis from one of the laser-optic interface connectors.

2. The PHY laser optics device processes the frame and sends it over the XAUI path to the MAC device.

3. The MAC device receives the frame, strips the CRCs, and sends the packet via the SPI 4.2 bus to the ASIC.

4. The ASIC takes the packet from the MAC devices and classifies the Ethernet information. CAM lookups based on etype, port, VLAN, and source and destination address information determine whether the packet is dropped or forwarded to the SPA interface.

Path of a Packet in the Egress Direction

The following steps describe the path of an egress packet from the SIP through the Gigabit Ethernet SPA:

1. The packet is sent to the ASIC using the SPI 4.2 bus. The packets are received with Layer 2 and Layer 3 headers in addition to the packet data.

2. The ASIC uses port number, destination MAC address, destination address type, and VLAN ID to perform parallel CAM lookups. If the packet is forwarded, it is forwarded via the SPI 4.2 bus to the MAC device.

3. The MAC device forwards the packets to the PHY laser-optic interface, which transmits the packet.

Displaying Cisco Wideband SPA Information

To verify the SPA type that is installed in your Cisco uBR10012 router, you can use the show diag command. Table 7-1 shows the card type that appears in the show diag command output for the Cisco Wideband SPA.

Note With Cisco IOS commands, the Cisco Wideband SPA Gigabit Ethernet ports are not standard user-configurable interfaces and do not appear in the output of the show interfaces command.

You can get information on the Cisco Wideband SPA Gigabit Ethernet ports using the show controllers modular-cable command with the ge_phy keyword.

Table 7-1 SPA Card Descriptions in show Commands

SPA

Description in show diag command

Cisco Wideband SPA

24rfchannel-spa-1

The 12 wideband channels on each Cisco Wideband SPA are similar to cable interfaces and appear in the output of commands such as the show interfaces command.

The show hw-module bay command displays a variety of information about the RF channels and wideband channels on a Cisco Wideband SPA.

Examples of the show diag and show interface wideband-cable Commands

The following example shows output from the show diag command on a Cisco uBR10012 router with a Cisco Wideband SPA installed in slot 1, subslot 0, bay 0.

Bill L: Need to update output when serial numbers start appearing
Router# show diag 1/0/0
Slot/Subslot/Port 1/0/0:
        24rfchannel-spa-1 card, 1 port + 1 redundant port
        Card is half slot size
        Card is analyzed 
        Card detected 16:47:55 ago
        Card uptime: Not Supported
        Card idle time: Not Supported
        Voltage status: 3.3V (+3.291) NOMINAL  2.5V (+2.495) NOMINAL
                        1.2V (+1.201) NOMINAL  1.8V (+1.811) FIXED
EEPROM contents, slot 1/0/0:
        Hardware Revision        : 1.0
        Boot Timeout             : 500
        PCB Serial Number        : CSJ09379726
        Part Number              : 73-9597-03
        Part Number Revision     : 05  
        Fab Version              : 03
        RMA Test History         : 00
        RMA Number               : 0-0-0-0
        RMA History              : 00
        Deviation Number         : 0
        Product (FRU) Number     : SPA-24XDS-SFP       
        Version Identifier (VID) : V01 
        Top Assy. Part Number    : 68-2562-03
        Board Revision           : 05  
        CLEI Code                :           
        MAC Address              : 0019.06a5.d9b2
        MAC Address block size   : 1
        Manufacturing Test Data  : 00 00 00 00 00 00 00 00 
        Field Diagnostics Data   : 00 00 00 00 00 00 00 00 
        Calibration Data         : Minimum: 0 dBmV, Maximum: 0 dBmV
              Calibration values : 
        Platform features        : 00 00 00 00 00 00 00 00 
                                   00 00 00 00 00 00 00 00 
                                   00 00 00 00 00 00 00 00 
                                   00 00 00 00 00 00 00 
The following show interface wideband-cable command displays information about the cable interface for wideband channel 1 on the Cisco Wideband SPA located in slot 1, subslot 0, bay 0.

Note This example shows the syntax supported prior to Cisco IOS Release 12.2(33)SCB.
Router# show interface wideband-cable 1/0/0:1
Wideband-Cable1/0/0:1 is up, line protocol is up 
  Hardware is Wideband CMTS Cable interface, address is 0012.001a.8897 (bia 
0012.001a.8897)
  MTU 1500 bytes, BW 74730 Kbit, DLY 1000 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation MCNS, loopback not set
  Keepalive set (10 sec)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output 00:00:09, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  30 second input rate 0 bits/sec, 0 packets/sec
  30 second output rate 0 bits/sec, 0 packets/sec
     0 packets input, 0 bytes, 0 no buffer
     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
     24224 packets output, 1222002 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 output buffer failures, 0 output buffers swapped out