Simon,
Check for "DHCP Snooping" on both switches. Basically, just do a "show run
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inc dhcp". If you have DHCP Snooping implemented, configure uplink as a
"trusted ****t".
Good luck,
Mike
CCNP, CCDP, CCSP, Cisco Voice, MCSE W2K, MCSE+I, Security+, etc.
CCIE R&S (in progress), CCIE Voice (in progress)
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"SIMON WATSON" <info@[EMAIL PROTECTED]
> wrote in message
news:TDNIj.34392$jH5.351@[EMAIL PROTECTED]
> Hi All
>
> I need your help
>
> We have a dhcp server that was connected to Cisco 2960 which in turn was
> connected to alcatel switches, all worked fine. we changed the alcatel
> switches to cisco 2960's. We now have a problem that only devices
directly
> connected to the original 2960(where the dhcp server is connected to) is
> receiving IP addresses we have now 4 other 2960's onthe network but we
> cannot get a IP address when we connect to any of the ****ts. doing a
> sniffer trace on the working switch the DHCP four way handshake is
> performed, discovery>>offer>>request>>>ack
>
> On one of the other switches only the discovery is seen but no offer
> response from the dhcp server is seen therefore no ip address is
received.
> the new switches only have ****tfast set and an ip address for vlan1 so I
> cannot understand what is stopping the dhcp traffic
>
> Any Ideas
>
> Thanks
>
> Simon
>
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