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MTAs not getting IP address

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ruiribeiro
MTAs not getting IP address

Hi,

I am migrating from a terayon to a CMTS running 12.3-23.BC7 IOS, and using docsis server 1.2.0, with Arris modems SW_REV: 5.2.54T.SIP; MODEL: TM602A. Most of the modems get their IPs and CPEs too. However the MTAs are not getting their IP. When I try to configure an instruction "cable helper-address xxx.xx.xx.xx mta", I get the error "Interface Bundle 1, Need to turn on DHCP parse in order to extract embedded device class.".

This situation is rather frustrating since everything is working rather well with the terayon. Have you any sugestions?

TIA,
Rui

emkowale
122

Sounds like you need option 122 setup on your DHCP server. If you've never done it before it can be pretty involved. If you can't figure it out or are in a pinch, contact me and I can help you out.

Eric
StarLight Cable
eric@starlightcable.com

kwesibrunee
cable helper-address

cable helper-address xxx.xxx.xxx.xxx mta requires you to turn on dhcp parsing you can do this by

conf t
int bundle 1
cable dhcp-parse option-43 or cable dhcp-parse option-60

however I am pretty sure that is not your problem, by default all mtas are hosts to the cmts so all the dhcp requests for mtas are sent to the address specified by cable helper-address xxx.xxx.xxx.xxx host.

The previous poster is correct you have either a option 122 problem with docsis server or you have not specified all of the appropriate dhcp options in docsis-server for the mta, in which case it will ignore the dhcp request.

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