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Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
OL-2239-03
AppendixC Viewing Sample Configuration Files
no ip directed-broadcast
!
interface Cable5/0
ip address 172.1.71.1 255.255.255.0 secondary
ip address 10.1.71.1 255.255.252.0
no ip directed-broadcast
no ip route-cache
no ip mroute-cache
no keepalive
no cable proxy-arp
cable helper-address 10.1.70.30
cable downstream annex B
cable downstream modulation 64qam
cable downstream interleave-depth 32
cable upstream 0 spectrum-group 1
cable upstream 0 modulation-profile 3
cable downstream frequency 531000000
cable upstream 0 frequency 28000000
cable upstream 0 power-level 0
no cable upstream 0 shutdown
cable upstream 1 shutdown
cable upstream 2 shutdown
cable upstream 3 shutdown
cable upstream 4 shutdown
cable upstream 5 shutdown
!
!
router eigrp 100
network 10.0.0.0
!
ip classless
no ip http server
!
!
!
line con 0
password cisco
login
transport input none
line aux 0
line vty 0 4
password cisco
login
!
end
The command lines in the sample configuration file beginning with the string cable spectrum-group
contain the critical elements necessary to set up spectrum management in your overall configuration:
cable spectrum-group 1 frequency 40000000
cable spectrum-group 1 frequency 20000000 2
In this case, the user has configured spectrum management group number “1” to be available to upstream
channels. As defined by the two command lines above, the “preferred” choice is for the upstream to
operate on a 40MHz channel. If that channel is not suitable for the transmission scheme available, the
upstream will automatically move over to transmitting at 20MHz and increase the receive power rating
by 2dB.
The command lines in the sample configuration file beginning with the string cable modulation-profile
contain the critical elements necessary to set up a modulation profile in your overall configuration: