Distribution Layer April 2014
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random-detect dscp 55 percent 80 100
random-detect dscp 57 percent 80 100
random-detect dscp 58 percent 80 100
random-detect dscp 59 percent 80 100
random-detect dscp 60 percent 80 100
random-detect dscp 61 percent 80 100
random-detect dscp 62 percent 80 100
random-detect dscp 63 percent 80 100
!
table-map cos-discard-class-map
map from 0 to 0
map from 1 to 8
map from 2 to 16
map from 3 to 24
map from 4 to 32
map from 5 to 46
map from 6 to 48
map from 7 to 56
!
macro name EgressQoS
service-policy type lan-queuing output 1P7Q4T
@
Step 9: If you are using Gigabit Ethernet cards supported in VSS mode on Cisco Catalyst 6500 Supervisor
Engine 2T based switches, configure an additional QoS policy for the Gigabit Ethernet ports.
A separate egress QoS policy is configured to accommodate the Gigabit Ethernet cards, which use a 1P3Q8T
queuing architecture supporting COS-based queuing. This policy does not apply to the Cisco Catalyst 6880-X
platforms.
! Class maps for 1P3Q8T 1Gb ports service policy
class-map type lan-queuing match-any PRIORITY-QUEUE-GIG
match cos 5 4
class-map type lan-queuing match-any CONTROL-AND-STREAM-MEDIA
match cos 7 6 3 2
class-map type lan-queuing match-any BULK-DATA-SCAVENGER
match cos 1
!
policy-map type lan-queuing 1P3Q8T
class PRIORITY-QUEUE-GIG
priority
queue-buffers ratio 15
class CONTROL-AND-STREAM-MEDIA
bandwidth remaining percent 55
queue-buffers ratio 40
random-detect cos-based
random-detect cos 2 percent 60 70
random-detect cos 3 percent 70 80
random-detect cos 6 percent 80 90
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