WS-C3560 ACL's & 7942 IP Phones

[sdawson35]

                   Hi,

We have an interesting issue where we have introduced an ACL on our 3560's for voice traffic. We have a mixed bag of 7940, 7942 and 7945 ip phoones, after we introduced the ACL the 7942's refuse to register, the 40's & 45's are fine.

We are at a loss as to what the problem is.

Regards

Scott

[Abzal]

Hi,

Show that piece of config

And what happens if you remove that ACL.

Please rate helpful posts.

[sdawson35]

Hi,

Remove the ACL the the 7942's register.

Int vlan 140

ip access-group VOICE_ACL in

ACL

ip access-list extended VOICE_ACL

permit udp any host 172.30.xx.101

permit udp any host 172.26.xx.101

permit udp any host 172.26.xx.102

permit ip 192.168.0.0 0.0.255.255 host 172.30.xx.101

permit ip 192.168.0.0 0.0.255.255 host 172.26.xx.101

permit ip 192.168.0.0 0.0.255.255 host 172.26.xx.102

permit ip 192.168.0.0 0.0.255.255 192.168.0.0 0.0.255.255

permit ip 192.168.0.0 0.0.255.255 host 172.26.xx.30

permit eigrp any any

[Abzal]

Hi,

Some more questions.What is subnet of IP phones and telephony server? IP phone requests for registration is blocked by this ACL. You need to allow these requests.

And this one:

sh run int vlan 140

Please rate helpful post.

[sdawson35]

Hi,

Phones are 192.168.40.0 network.

interface Vlan140

description London Voice Phones

ip address 192.168.40.2 255.255.255.0

ip helper-address 172.30.65.101

no ip redirects

mls rp vtp-domain ln_production_edge

standby 140 ip 192.168.40.1

standby 140 timers 1 3

standby 140 priority 110

standby 140 preempt

end

[Abzal]

ok thanks for information.

Is port phone connected configured correctly? What is TFTP server or phone registration server ip address?