Monthly Archives: November 2011

IP helper with ACL on SVI

Just another short post about IP helpers:

It took me last week a few minutes to figure out why my new configured IP helpers were not working.

The starting config was like:

interface Vlan6
 description Voice VLAN
 ip address
 ip access-group Voice in
 ip helper-address
 ip helper-address
 no ip redirects
 no ip unreachables
 standby 6 ip
 standby 6 timers 1 2
 standby 6 priority 110
 standby 6 preempt
ip access-list extended Voice
 permit ip host
 permit ip host
 permit ip
 permit ip any host

Continue reading