6500 1p3q4t Best Practice Queue Configuration

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Mar 23rd, 2010
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I have a 6500 Sup720 I looking for a best practice for configuration of 1p3q4t queues


Model: VS-S720-10G

Type: 1000BaseLH

Speed: 1000

Duplex: full

Trunk encap. type: 802.1Q,ISL

Trunk mode: on,off,desirable,nonegotiate

Channel: yes

Broadcast suppression: percentage(0-100)

Flowcontrol: rx-(off,on,desired),tx-(off,on,desired)

Membership: static

Fast Start: yes

QOS scheduling: rx-(2q4t),


QOS queueing mode: rx-(cos), tx-(cos)

CoS rewrite: yes

ToS rewrite: yes

Inline power: no

Inline power policing: no

SPAN: source/destination

UDLD yes

Link Debounce: yes

Link Debounce Time: yes

Ports-in-ASIC (Sub-port ASIC) : 1-5 (1-2,5)

Remote switch uplink: no

Dot1x: yes

Port-Security: yes



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Jon Marshall Tue, 03/23/2010 - 12:17
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There is no best practice as such because it all depends on your QOS requirements within your network. Obviously the priority queue is usually used for VOIP if you are using that within your LAN.

Other than that it is entirely up to you how you classify and queue the traffic on each linecard. Be aware that QOS is handled by the PFC on the 6500 so when you apply a QOS policy to an individual port on a line card that QOS policy is applied to all ports within the same port group as the individual port.


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