What is needed to support DHCP snooping

betacentauri · ‎05-04-2009

Hello, I need to do DHCP snooping on a 2950 with IOS 12.1(13)EA1. I follow the documented procedure but all I can get is

switch(config)#ip dhcp snoop

^

% Invalid input detected at '^' marker.

Am I doing something wrong, or must I upgrade? Does every 2950 work? Which is the IOS needed?

Thank you in advance

Edison Ortiz · ‎05-04-2009

Available on 12.1(19)EA1 or later

http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_22_ea11x/command/reference/cli1.html#wp4217071

HTH,

__

Edison.

betacentauri · ‎05-11-2009

Edison,

Thank you very much for your response, I was not aware of that document. However, I have given both c2950-i6q4l2-mz.121-19.EA1.bin and c2950-i6q4l2-mz.121-20.EA1.bin a try and I keep getting the same. Does the kind of switch prevent me from using the command? I am running the standard feature set:

cisco WS-C2950-24 (RC32300) processor (revision J0) with 20713K bytes of memory.

Processor board ID FHK0723W0B3

Last reset from system-reset

Running Standard Image

24 FastEthernet/IEEE 802.3 interface(s)

Edison Ortiz · ‎05-11-2009

You need the Enhanced Image, please refer to the IOS release documentation for further info:

http://www.cisco.com/en/US/docs/switches/lan/catalyst2950/software/release/12.1_20_ea2/configuration/guide/swdhcp82.html#wp1099793

HTH,

__

Edison.