[c-nsp] CMTS Questions

[Paul Stewart]

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     -0.50 1682    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