JZ; Reviewed:
SPOC 2/14/2005
Solution & Interoperability Test Lab Application Notes
©2005 Avaya Inc. All Rights Reserved.
5 of 16
Aspen-Ava-QoS.doc
7. Since Extreme Networks switches treat VLAN 0 as clear traffic (untagged VLAN), it does not
matter if 802.1Q is enabled on the Avaya S8500 Media Server and the IPSI of the Avaya G650
Media Gateway.
The Avaya C364T-PWR Converged Stackable Switch trusts 802.1p/Q priority for Layer 2
traffic, and is configured to trust CoS-DSCP for Layer 3 traffic. By configuring to trust CoS-
DSCP, the Avaya C364T-PWR will use a higher CoS value mapped from 802.p/Q priority and
DSCP. The Avaya C364T-PWR will preserve 802.1p/Q priority from the Avaya IP telephones
to the Extreme Networks Aspen.
Table 2 summarizes the QoS configuration used for the Avaya equipment, and the directly
connected Extreme Networks Aspen. The detailed commands to implement this configuration on
each product are provided in the forthcoming sections.
Avaya
Equipment
802.1p/Q and DiffServ
Configuration
Aspen Port
Configuration
IP telephones IP phone tags with VLAN ID received from
the DHCP server. 802.1p/Q priority and
DiffServ value are received from the IP
network region configured in Avaya
Communication Manager.
(IP telephones are mapped to an IP network
region based on source IP addresses)
Tagged VLAN on the port
for the IP telephone.
Untagged VLAN for the
PC attached to the phone.
PC running IP
Softphone
DiffServ value is received from the IP
network region configured in Avaya
Communication Manager.
(IP Softphones are mapped to an IP network
region based on source IP addresses).
Untagged VLAN to
support any NIC.
IPSI on Avaya
G650 Media
Gateway
Using IPSI administration from IPSI
services port to set DiffServ value to 56.
Untagged VLAN
C-LAN and
MEDPRO on
Avaya G650
Media Gateway
DiffServ value is received from the IP
network region configured in Avaya
Communication Manager.
Untagged VLAN
Avaya S8500
Media Server
Use change ip-services interface to set
DiffServ value to 56.
Untagged VLAN
Table 2 – QoS and Port Configuration Summary
3.3. DHCP and BOOTP Relay Configuration
Table 3 summarizes the Dynamic Host Configuration Protocol (DHCP) configuration. The
DHCP and TFTP servers are configured on the same PC with IP address 192.168.89.5 (VLAN
89).
In the sample configuration, when an Avaya IP telephone is initially reset, it will send an
untagged DHCP request. The Extreme Networks Aspen and the Avaya Converged Stackable
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