DHCP RElay Help

Rhino Lists isplists at duracom.net
Thu Mar 13 14:30:45 UTC 2008


I have an issue.  We have a Cisco router with 2 Ethernet Interfaces F0/0 and
F0/1. My dhcp server sits on F0/1.  On F0/0 I have the following:

interface FastEthernet0/0
 ip address xx.xx.xx.177 255.255.255.240 
 ip address xx.xx.xx.161 255.255.255.240 secondary
 ip address cc.cc.cc.1 255.255.254.0 secondary
 ip access-group 101 in
 ip access-group 102 out
 ip helper-address xx.xx.xx.146


When this was set like this I received unknown segment from the DHCP server?
So I then changed it like this:


interface FastEthernet0/0
 ip address xx.xx.xx.177 255.255.255.240 secondary
 ip address xx.xx.xx.161 255.255.255.240 secondary
 ip address cc.cc.cc.1 255.255.254.0
 ip access-group 101 in
 ip access-group 102 out
 ip helper-address xx.xx.xx.146
  

Now on the router I set cc.cc.cc.1 as the Primary IP on F0/0 and the unknown
segment went away?  Why would it matter either way?


K


 



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