I have a device AVAYA MEDIA SERVER S8300 (DHCP Server for Voice VLAN) that is connected to Cisco 3750X. The Cisco 3750X is also connected
to other 3 Cisco 3560X through trunk links . I'm implementing a Voice VLAN and Data VLAN . All services through Data VLAN
are working properly, but de Voice VLAN has a problem which is :
The Avaya IP Phones are signed correctly the first time, but sometimes disconnected and have to enter the phone manual programming once again for signing the right way on the AVAYA MEDIA SERVER.
Currently being used on some switch port to connect PC phones and other only voice service.
This is the configuration on 3750X :
interface GigabitEthernet1/0/19
description CONEXION CON AVAYA MEDIA SERVER S8300
switchport access vlan 200
switchport mode access
Trunk link :
interface GigabitEthernet1/2
description ENLACE TRUNK DE FIBRA CON IDF_C / IDF_C_SW1
switchport trunk encapsulation dot1q
switchport trunk native vlan 99
switchport mode trunk
!
This is the configuration on 3560X:
mls qos map cos-dscp 0 8 16 24 32 40 46 56
mls qos
interface GigabitEthernet0/31
description PUERTO VLAN 100 ADMINISTRATIVOS
switchport access vlan 100
switchport mode access
switchport voice vlan 200
priority-queue out
mls qos trust dscp
spanning-tree portfast
!
Any Idea ???
