Specifications

Release Notes for Cisco uBR904 Cable Access Router for Cisco IOS Release 12.0(7)T 15
Supplemental and Corrected Text for the Cisco uBR904 Cable Access Router
This service class assigns a primary SID for the unit. In addition to being used as a data SID, the
router uses this SID for all MAC message exchanges with the CMTS. Any SNMP management
traffic from the network to the Cisco uBR904 cable access router also uses this SID.
While this class is strictly “best effort,” you can prioritize data traffic within this class into eight
different priority levels.
Note The CMTS system administrator, however, must define the supported upstream traffic
priority levels and include the traffic priority fields in the DOCSIS configuration file downloaded
to the Cisco uBR904 cable access router.
• The CMTS system administrator, when creating a DOCSIS configuration file for the
Cisco uBR904 cable access router, can configure extra classes of service. These secondary
classes of service are expected to be high QoS classes and are used by high-priority traffic. These
classes have a minimum upstream rate specified for the channel.
To change the operating mode of the Cisco uBR904 cable access router from its default bridging
state, follow the procedure in Table 4.
To configure routing, follow these instructions when in global configuration mode. After you
have completed the procedure, enter the show startup-config command to verify that routing is
enabled.
Table 4 Configuring Operating Modes for the Cisco uBR904 Cable Access Router
Step Command Purpose
1
uBR904(config)#int c 0
Enter the interface configuration mode for the router interface.
2
uBR904(config-if)#no cable-modem
compliant bridge
uBR904(config-if)#no bridge group
number and remove bridge-group
number.
uBR904(config-if)#ip address mask
ip address x.x.x.x (0-255)
subnet mask x.x.x.x (0-255)
uBR904(config-if)#exit
Turn off DOCSIS-compliant bridging.
Enable the IP address and subnet.
Return to the global configuration mode.
3
uBR904(config)#int e 0
uBR904(config-if)#no bridge group
number and remove bridge-group
number.
uBR904(config-if)#ip address mask
ip address x.x.x.x (0-255)
subnet mask x.x.x.x (0-255)
uBR904(config-if)#exit
Enter the interface configuration mode for Ethernet 0.
Enable the IP address and subnet.
Return to the global configuration mode.
4
uBR904(config)#ip routing
Enable IP routing for the router.
5
uBR904(config)#router rip
uBR904(config)#version 2 rip
uBR904(config)#network
network-number
uBR904(config-if)#exit
Enter the router configuration mode and enable RIP version 2
routing.
Specify the network that is connected to the router where RIP will
operate. If the router is attached to more than one network, enter
each IP address in a separate command.
Return to the global configuration mode.