Download C3 CMTS User Documentation

4 Bridge Operation
shutdown
!
interface cable 1/0.0
bridge-group 0
no shutdown
no cable upstream 0 shutdown
no cable upstream 0.0 shutdown
ip address 10.99.99.253 255.255.255.0
ip address 10.99.98.253 255.255.255.0 secondary
!
! Update giaddr with 10.99.99.253 for cable-modem
! update giaddr with 10.99.98.253 for host
ip dhcp relay
no ip dhcp relay information option
cable dhcp-giaddr policy
! unicast ALL dhcp to 10.99.99.1
cable helper-address 10.99.99.1
exit
!
interface cable 1/0.1
bridge-group 1
shutdown
!
! nothing to do here in this case
exit
exit
Fast Ethernet 0/1 as the
Boot Options Network
Interface
Selecting the fastethernet 0/1 interface as the boot options network interface, when there is no existing startup-configuration file, pre-assigns the
bridge groups to force all cable modem traffic to the fastethernet 0/1 interface, and all CPE traffic to the fastethernet 0/0 interface. This results in
“out of band” operation of the C3.
Selecting FE01 as the booting interface:
•
pre-assigns interface fastethernet 0/0.0 to bridge group 1
•
pre-assigns interface cable 1/0.0 to bridge group 0
•
pre-assigns interface fastethernet 0/1.0 to bridge group 0
•
pre-assigns cable 1/0.1 to bridge group 1
•
sets “default cm subinterface cable 1/0”
•
sets “default cpe subinterface cable 1/0.1”
•
carries the boot option specified IP address forward into a factory
default configuration as the fastethernet 0/1 IP address.
Again, all the above settings may be changed at the CLI.
4-10
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11/14/05