Cisco 7600 Series Ethernet Services cards types & queue values

[burakdinci]

Hello,

There is different types for the Cisco 7600 Series Ethernet Services cards.
( More expensive cards with high queue values and less expensive cards with
low queue values.)

http://www.cisco.com/en/US/prod/collateral/routers/ps368/data_sheet_c78-549419.html
Hardware queues
ES Plus XT 40G line cards
• 128,000 ingress queues
• 256,000 egress queues
ES Plus XT 20G line cards
*• 64,000 ingress queues*
• 128,000 egress queues
Hierarchical QoS (H-QoS)

http://www.cisco.com/en/US/prod/collateral/routers/ps368/data_sheet_c78-570730.html
Hardware queues
Cisco 7600 Series ES Plus Transport 40G and 20G Line Cards
*Supporting up to 16 level 4 queues per physical port*
Hierarchical QoS (H-QoS)

Low queue cards have got only 4 queues per physical port. High queue cards
have got minimum 64.000 queue. This is very huge difference.  In what kind
of scenario do we have to use the High queue cards ? Could you give some
examples please ?  Kind Regards.

Burak

[Laurent Aubert]

HI Burak,

Each time you configure a class with bandwidth allocation or shaping,.. a queue will be used so if you use such card to provide QoS for a lot of subscribers sharing the same interface, you will need a lot of them !!

HTH

Laurent.