Jon,
Have you tried turning on IP routing and adding a route and then
observing
the results ?
Let me know if that works
Jaspreet
Jon Krabbenschmidt wrote:
> Hey all I am having a wierd quirk and thought maybe you all may help me
find
> an answer.
>
> Thanks in advance for any help:
>
> We've just set up a docsis environment with a CMTS including a UBR7200,
> CNR (running on a an E250), and UBR900's as cable modems...the RF network
> seems fine, and the cabling is cool.
>
> The problem is that the cable modems are stuck between init(d) and offline
> states...looks they can communicate with the UBR7200 fine through the
> cable interface, but they cant seem to get to the DHCP server (CNR) on
> another network (the cable-helper address seems to be setup fine though),
> the DISCOVER packets cant seem to traverse over, the UBR sees them, but
> cant forward them...the DHCP server and UBR are on the same switch, I
> think we've narrowed it down to a routing issue, but I can ping the DHCP
> server from with a source address of the cable interface's primary address
> (but not the secondary)
>
> Here's the running config less passwords and a show ip route command
> which looks kinda weird:
>
> Current configuration:
> !
> version 12.0
> service timestamps debug uptime
> service timestamps log uptime
> !
> hostname cmts1
> !
> !
> no cable qos permission create
> no cable qos permission update
> cable qos permission modems
> !
> !
> !
> !
> !
> ip subnet-zero
> no ip routing
> !
> !
> !
> interface FastEthernet0/0
> ip address 192.168.121.150 255.255.255.0
> no ip directed-broadcast
> no ip route-cache
> no ip mroute-cache
> full-duplex
> !
> interface Cable2/0
> ip address 172.22.145.1 255.255.255.0 secondary
> ip address 172.22.144.1 255.255.255.0
> no ip directed-broadcast
> no ip route-cache
> no ip mroute-cache
> no keepalive
> cable dhcp-giaddr policy
> cable downstream annex B
> cable downstream modulation 64qam
> cable downstream interleave-depth 32
> cable downstream frequency 537000000
> cable upstream 0 frequency 28000000
> cable upstream 0 power-level 0
> cable upstream 0 channel-width 3200000
> cable upstream 0 minislot-size 4
> no cable upstream 0 shutdown
> !
> ip default-gateway 192.168.121.254
> ip classless
> !
> snmp-server engineID local 0000000902000004C1A7CC00
> snmp-server community public RO
> !
> !
> line con 0
> transport input none
> line aux 0
> !
> end
>
> show ip route command:
>
> cmts1#show ip route
> Default gateway is 192.168.121.254
>
> Host Gateway Last Use Total Uses Interface
> ICMP redirect cache is empty
> cmts1#
>
> Thanks again for any and all suggestions!!!
>
> Jon
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=12341&t=12340
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