[c-nsp] UBR Questions

[Paul Stewart]

Any cable router experts on this list?

We run a small cable modem operation at some remote sites and it's
currently served via a common head end Ubr7114 router.  With increased
speeds coming online and possibly upgrades to Docsis 2.0 I'm wondering
how to upgrade basically.

What I'm seeing right now is some nodes where the upstream is starting
to get maxxed out (2.3Mb I believe it is).  The downstream channel is
fine hitting a max of 10Mb..

We have 6 nodes with two of the smaller ones combined so the router sees
four nodes basically.  We could take the combined nodes and break them
off onto another chassis but I don't think this is really the answer.
I'm looking for a way to increase overall plant speed without having to
upgrade the physical cable plant...??

Our cable interface looks like this (if this helps):

interface Cable1/0
 description Cable Network
 ip address xxxxxxxxxxxx 255.255.254.0 secondary
 ip address xxxxxxxxxxxx 255.255.255.192 secondary
 ip address 10.1.4.1 255.255.254.0
 ip nbar protocol-discovery
 service-policy output peer2peer
 ip route-cache flow
 cable downstream rate-limit token-bucket
 cable downstream annex B
 cable downstream modulation 64qam
 cable downstream interleave-depth 32
 cable downstream frequency 573000000
 cable downstream channel-id 82
 no cable downstream rf-shutdown
 cable upstream 0 frequency 29008000
 cable upstream 0 power-level 0
 cable upstream 0 channel-width 1600000
 cable upstream 0 minislot-size 4
 cable upstream 0 modulation-profile 1
 cable upstream 0 rate-limit token-bucket
 cable upstream 0 s160-atp-workaround
 no cable upstream 0 shutdown
 cable upstream 1 frequency 29008000
 cable upstream 1 power-level 0
 cable upstream 1 channel-width 1600000
 cable upstream 1 minislot-size 4
 cable upstream 1 modulation-profile 1
 cable upstream 1 rate-limit token-bucket
 cable upstream 1 s160-atp-workaround
 no cable upstream 1 shutdown
 cable upstream 2 frequency 29008000
 cable upstream 2 power-level 0
 cable upstream 2 channel-width 1600000
 cable upstream 2 minislot-size 4
 cable upstream 2 modulation-profile 1
 cable upstream 2 rate-limit token-bucket
 cable upstream 2 s160-atp-workaround
 no cable upstream 2 shutdown
 cable upstream 3 frequency 29008000
 cable upstream 3 power-level 4
 cable upstream 3 channel-width 1600000
 cable upstream 3 minislot-size 4
 cable upstream 3 modulation-profile 1
 cable upstream 3 rate-limit token-bucket
 cable upstream 3 s160-atp-workaround
 no cable upstream 3 shutdown
 cable dhcp-giaddr policy


Thanks for any help..:)

Paul