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BSR 64 k CMTS with 2 DHCP

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BSR 64 k CMTS with 2 DHCP

I want to have 2 different DHCP servers on BSR 64K.
1 for CM & the other for CPE. CM is my primary host & CPE is the secondary host. What is the way out to use second DHCP server for CPE IPs ?

dhcp servers

Simple answer, example:

ip address
ip address secondary host
ip address secondary host
ip address secondary host
ip address secondary mta
cable helper-address cable-modem
cable helper-address host
cable helper-address mta
no shutdown

Will try & let u know

Thanks a lot. I will try & let u know.

BSR 64000 ISP

Unable To Get IP Address For CM

I have a test bed with BSR64000 and Motorola SB6120 cable modems.The DHCP server is Cisco CNR 7.0 running on Solaris 10.0.When I checked the DHCP logs I am getting requests from Cable modem ,DHCP server is generating the configuration but DHCP offer is not reaching to cable modem.I used Wireshark to analyze the traffic ,what I noticed was, there was no DHCP offer packet being put on ethernet by DHCP server although application has generated the DHCP address.

Following are the details about my setup:
DHCP Server IP:
DHCP Pool for Cable Modems: to
CMTS IP address:
CMTS cable side IP address:
Cable helper address:

I have added static route route on DHCP server pointing 200.200.200 traffic towards -the CMTS interface.Cable modem is not getting any IP address.

I would appreciate if blog subscribers can help me in fixing this problem.Let me know if more details are required.

Ranjeet Badhe

both servers for modems?

Your post was to have one server for modems and the other for cpe's.
is that still the case? what does your running config look like? are there acl's in place that could be blocking?
what version software are you running and are you doing channel bonding?


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