Hello all. I need to set an static IP to a CM on the network and for that I created a /30 subnet on my bundle interface.
When I set the config on the host behind the modem I can't ping or link with the CMTS.
The idea is connect a host on the CM network with a static IP address.
My config for the CM cards is the next:
interface Cable2/0
no ip address
no cable packet-cache
cable bundle 1
cable downstream rate-limit
cable downstream annex B
cable downstream modulation 64qam
cable downstream interleave-depth 32
cable downstream channel-id 0
cable upstream 0 description T2P0-25M/MONTT-EPULEF
cable upstream 0 frequency 25008000
cable upstream 0 channel-width 3200000
cable upstream 0 minislot-size 2
cable upstream 0 power-level 0
cable upstream 0 modulation-profile 1
cable upstream 0 rate-limit
no cable upstream 0 shutdown
cable upstream 1 description T2P1-25M
cable upstream 1 frequency 25008000
cable upstream 1 channel-width 3200000
cable upstream 1 minislot-size 2
cable upstream 1 power-level 18
cable upstream 1 modulation-profile 1
cable upstream 1 rate-limit
no cable upstream 1 shutdown
cable upstream 2 description T2P2-25M
cable upstream 2 frequency 25008000
cable upstream 2 channel-width 3200000
cable upstream 2 minislot-size 2
cable upstream 2 power-level 0
cable upstream 2 modulation-profile 1
cable upstream 2 rate-limit
no cable upstream 2 shutdown
cable upstream 3 description T2P3-25M
cable upstream 3 frequency 25008000
cable upstream 3 channel-width 3200000
cable upstream 3 minislot-size 2
cable upstream 3 power-level 0
cable upstream 3 modulation-profile 1
cable upstream 3 rate-limit
no cable upstream 3 shutdown
cable upstream 4 description T2P4-25M
cable upstream 4 frequency 25008000
cable upstream 4 channel-width 3200000
cable upstream 4 minislot-size 2
cable upstream 4 power-level 0
cable upstream 4 modulation-profile 1
cable upstream 4 rate-limit
no cable upstream 4 shutdown
cable upstream 5 description T2P5-25M
cable upstream 5 frequency 25008000
cable upstream 5 channel-width 3200000
cable upstream 5 minislot-size 2
cable upstream 5 power-level 0
cable upstream 5 modulation-profile 1
cable upstream 5 rate-limit
no cable upstream 5 shutdown
Same for the Cable 3/0.
The Bundle interface configuration is the next:
interface Bundle1
ip address 192.122.161.1 255.255.255.0 secondary
ip address 192.122.162.1 255.255.255.0 secondary
ip address 192.122.163.1 255.255.255.0 secondary
ip address 192.122.164.1 255.255.255.0 secondary
ip address 192.122.165.1 255.255.255.0 secondary
ip address 192.122.160.65 255.255.255.252 secondary (THIS IS THE GATEWAY FOR THE CM).
ip address 10.10.0.1 255.255.0.0
ip accounting output-packets
ip dhcp relay information trusted
cable arp filter request-send 3 2
cable arp filter reply-accept 3 2
cable dhcp-giaddr policy
cable helper-address 192.122.160.5
And the next is my routing tab:
ip classless
ip route 0.0.0.0 0.0.0.0 192.122.1.81
ip route 172.16.0.0 255.255.0.0 192.122.160.2
ip route 192.122.160.40 255.255.255.248 192.122.160.2
ip route 192.122.160.48 255.255.255.248 192.122.160.2
ip route 192.122.166.0 255.255.255.0 192.122.160.2
ip route 192.122.167.0 255.255.255.0 192.122.160.2
no ip http server
no ip http secure-server
Thank you in advance for helping me.
Best Regards.
Wouldn't it be easier to just setup a reservation on your dhcp server for the modem or cpe?
not 100% sure with the Cisco, but believe you should start with the dhcp server
~Carl
Yes I agree, you dont need to add /30 on the bundle
Just set aside some of that 192.122.x space to be for static allocations (eg one /24 or part of a /24).
Then for customers who are paying for static IP, put a reservation in your DHCP for the customer's CPE MAC matched against one of those IPs.
If the customer also wants a routed subnet, then on the CMTS you can add a static route for the subnet and point it to the customer's static IP.
THANKS!