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In article <bev4dd$h0b$>,
says...
> Hello,
>
> We are using HSRP and DHCP with a central DHCP server and ip helper-adresses
> configured for the router interfaces to forward DHCP broadcast packets to
> the central server. For each subnet supporting DHCP, we observe on the DHCP
> server that discovery packets are received from each HSRP real interface
> associated with each HSRP virtual gateway. The DHCP server seems to handle
> this OK, but we occassionaly have problems where a client fails to obtain a
> lease and the logs indicate that the client has rejected the offer. We are
> using Lucent's Vital QIP DHCP server and Lucent has stated that our HSRP
> configuration may be causing these problems. The Lucent engineer recommends
> that we stop the standby routers from forwarding or responding to any
> packets, and referred us to a Cisco document entitled Avoiding HSRP
> Instability in a Switching Environment with Various Router Platforms,
> http://www.cisco.com/en/US/customer/...ies_configurat
> ion_example09186a0080093f93.shtml. Unless I'm missing something, I don't
> see anything in that document that tells me how to stop a standy router from
> forwarding broadcasts. And I'm not sure that I buy their explanation. But
> is there any way to stop the standby router from forwarding the DHCP
> broadcasts?

No. And your Lucent engineer is barking up the wrong tree. We have QIP
all over the place with no problems (and running HSRP) Usual
recommendations apply (like using portfast etc.)

--

hsb

"Somehow I imagined this experience would be more rewarding" Calvin
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