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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-03
Chapter3 Configuring Cable Modem Interface Features
Configuring Cable Subinterfaces
Router(config-if)# cable bundle ?
<1-255> Bundle number
Router(config-if)# cable bundle 25 ?
master Bundle master
<cr>
Router(config-if)# cable bundle 25 master ?
<cr>
Router(config-if)# cable bundle 25 master
Router(config-if)#
07:28:17: %UBR7200-5-UPDOWN: Interface Cable3/0 Port U0, changed state to down
07:28:18: %UBR7200-5-UPDOWN: Interface Cable3/0 Port U0, changed state to up
Router# show cable bundle 25 forwarding-table
MAC address Interface
0050.7366.17ab Cable3/0
0050.7366.1803 Cable3/0
0050.7366.1801 Cable3/0
The following example shows an error message you receive if you try to configure an interface with an
IP address that is not the master interface:
Router(config-if)# cable bundle 5
Please remove ip address config first then reenter this command
To display the forwarding table for a specified interface, use the show cable bundle command in
privileged EXEC mode. A sample is shown below:
Router# show cable bundle 25 forwarding-table
MAC address Interface
0050.7366.17ab Cable3/0
0050.7366.1803 Cable3/0
0050.7366.1801 Cable3/0
The following example shows how to bundle a group of physical interfaces. In this example, the
interfaces int c5/0 and int c4/0 are bundled.
int c5/0
ip address 209.165.200.225 255.255.255.0
ip address 209.165.201.1 255.255.255.0 secondary
cable helper-address 10.5.1.5
! MAC level configuration
cable bundle 1 master
int c4/0
! No IP address
! MAC layer configuration only
cable bundle 1
The following example shows how to configure interface 25 to be the master interface:
Router(config-if)# cable bundle 25 master
Router(config-if)#
07:28:17: %UBR7200-5-UPDOWN: Interface Cable3/0 Port U0, changed state to down
07:28:18: %UBR7200-5-UPDOWN: Interface Cable3/0 Port U0, changed state to up
The following example shows the error message you get if you try to configure an interface
with an IP address that is not the master interface:
Router(config-if)# cable bundle 5
Please remove ip address config first then reenter this command
Router(config-if)#