[c-nsp] CMTS Questions

Brian Spade bitkraft at gmail.com
Mon Aug 27 21:59:19 EDT 2007


Can you paste the eMTA config file?

On 8/27/07, Paul Stewart <paul at paulstewart.org> wrote:
>
> Any CMTS experts on here? ;)
>
> Cisco 7246VXR with external Linux DHCP server....
>
> Trying to get an Arris cable modem with integrated MTA onboard for
> packetcable deployment...  this is on a test router but hoping to go
> production shortly...
>
> First question is why this modem isn't pingable nor web interface
> reachable
> when online WITH baseline privacy enabled?  Without BPI, modem is pingable
> and web interface reachable.
>
> dis2-rtr-bn#sh cable modem
> MAC Address    IP Address      I/F       MAC          Prim RxPwr  Timing
> Num
> BPI
>                                          State        Sid  (dBmv) Offset
> CPE
> Enb
> 0015.a245.6245 xx.xx.xx.254    C3/0/U5   online(pt)   1     -0.501682    0
> Y
>
>
> Second problem is with the secondary IP addresses.  They make it to the
> DHCP
> server but fail to make their way back through the router.
>
> ip dhcp relay information option
>
> interface Bundle1
> ip address xx.xx.88.1 255.255.254.0 secondary
> ip address xx.xx.92.1 255.255.254.0 secondary
> ip address xx.xx.80.1 255.255.252.0
> cable arp filter request-send 3 2
> cable arp filter reply-accept 3 2
> cable dhcp-giaddr policy strict
> cable helper-address xx.xx.64.122
>
> I've tried all kinds of configurations and cannot get more than the
> primary
> IP address for the CM itself assigned - hosts behind the CM and the MTA
> portion will not get an IP address but in the DHCP logs (linux) it shows
> it
> being assigned but no ACK being received.. presume this is a Cisco
> specific
> configuration issue but not sure....
>
> Thanks in advance to any insight...
>
> Paul
>
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