Hi there. I've got a Cisco infrastructure, but a non-Cisco VOIP platform (Mitel 3300). I've been experiencing some call quality issues lately, so I was reviewing port configs on the access switches at three of my corporate sites. These switchport configs were setup before I joined the company, and seem to have been setup by different people at different times and with different intentions (ie. wildly varying config).
The access switches at each site tend to be Catalyst 3750 POE, but the switchport config can vary:
eg. Site A:
interface FastEthernet1/0/10
description typical VOIP switchport
switchport trunk encapsulation dot1q
switchport trunk native vlan 111
switchport mode trunk
srr-queue bandwidth share 10 10 60 20
srr-queue bandwidth shape 10 0 0 0
mls qos trust cos
auto qos voip trust
spanning-tree portfast trunk
end
eg. Site B:
interface FastEthernet3/0/10
description typical VOIP switchport
switchport access vlan 122
switchport mode access
switchport voice vlan 120
spanning-tree portfast
end
eg. Site C:
interface GigabitEthernet1/0/10
description typical VOIP switchport
switchport mode access
switchport port-security maximum 5
switchport port-security
switchport port-security violation restrict
srr-queue bandwidth share 1 30 35 5
priority-queue out
mls qos trust cos
macro description USERS
auto qos trust
storm-control broadcast level 70.00
spanning-tree portfast
end
At all sites, we typically have a single LAN drop at each end user work area, which connects to the VOIP phone, and then we use the PC port on the phone to connect the user's PC or laptop. Between sites, we have 50Mbps TLS service, provided through our ISP/telco.
What is best practice for Cisco Cat 3750 POE (or other similar access switches) port config in order to accomodate both normal traffic and non-Cisco (Mitel 3300) VOIP traffice?
Thanks a ton in advance!!
- Jeremy
