I am at a standstill with this docsis system. I'm sure its just because its over my head. But at least I have determination to finish. My config file is so close my test modem lights with all lights. The ubr7246vxr with a show cable modem command says it is online. I connect to the cm, no internet. I am setting the ubr up with its own static ip to connect directly to the internet (isp), with the all in one config. What I need help on is the correct config commands to place those static ips behind. Yes when hooking up my laptop to the cm it did receive the dhcp from the system, as configured. The SB5100's status page shows all processes are done and is operational. Being my first docsis project, I had to put it on hold until I got up to speed. I have learned enough now to finally be able to communicate with you guys. Any help would be greatly appreciated Gary
Sounds like you are pretty close to having a working system
Try pinging by IP and by name. If you have not got DNS servers setup right in DHCP the ping by IP should still work.
I'd try doing a few different pings, eg cm<->cmts, cm<->core, cmts<->internet etc
Maybe post the IP addressing config used on your CMTS bundle and LAN interfaces, static routes on the CMTS, static routes on your core/upstream router
it should look something like this :
===========
cmts :
int bundle1
ip address y.y.y.1 255.255.255.0 secondary ! cpe
ip address x.x.x.1 255.255.255.0 ! cable modems
cable dhcp-giaddr policy
cable helper address your.dhcp.server.here
int gig0/1
ip address z.z.z.2 255.255.255.0
ip route 0.0.0.0 0.0.0.0 z.z.z.1
===========
your internet router
! cable cpe ranges
ip route y.y.y.0 255.255.255.0 z.z.z.2
int gig0/1
! LAN
ip address z.z.z.1 255.255.255.0
int gig0/2
! internet
ip address a.a.a.2 255.255.255.252
ip route 0.0.0.0 0.0.0.0 a.a.a.1
Im heading over there soon Ill post my running confg, thsnks for the info so far.
UBr7246vxr cable modems go "online" but not the internet.
ip route 0.0.0.0 0.0.0.0 69.xx.xxx.0 should be the same as ip default gateway
i.e. ip route 0.0.0.0 0.0.0.0 69.xx.xxx.73
the ip-default gateway will only be used by the CMTS if there are no default routes i.e. 0.0.0.0 0.0.0.0 xxx.xxxx.xxx.xxx
it will never be used by the pcs behind cable modems. I would reccomend leaving it out of your config altogether as it has limited usefullness.
The ubr7246vxr is setup with one FastEthernet and one Cable interface. I can have the fa int as a WAN connection for the Cable int. right?