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 192.168.1.251 255.255.255.0
 ip access-group Voice in
 ip helper-address 192.168.15.1
 ip helper-address 192.168.15.3
 no ip redirects
 no ip unreachables
 standby 6 ip 192.168.1.254
 standby 6 timers 1 2
 standby 6 priority 110
 standby 6 preempt
ip access-list extended Voice
 permit ip host 192.168.1.9 192.168.254.0 0.0.0.255
 permit ip host 192.168.1.2 192.168.254.0 0.0.0.255
 permit ip 192.168.1.0 0.0.0.255 192.168.15.0 0.0.0.255
 permit ip any host 224.0.0.2

Continue reading