The service policy is bound to the multilink interfaces. There are route-maps on the vlan interfaces on the msfc that match traffic patterns and set their precedence values. There is a service policy bound to the multilink interfaces with class-maps that reference acls that classify the priority of the traffic across the wan based on the precendence matched on the acl. The configuration on the remote 2651 routers is identical in terms of the route-maps and service policy. The output from the show policy interface Multilink1 for the remote is as follows:
Multilink1
Service-policy output: Qos-Policy
Class-map: Voice (match-all)
14013163 packets, 2531701128 bytes
5 minute offered rate 159000 bps, drop rate 0 bps
Match: access-group 104
Weighted Fair Queueing
Strict Priority
Output Queue: Conversation 264
Bandwidth 800 (kbps) Burst 20000 (Bytes)
(pkts matched/bytes matched) 14013163/2531701128
(total drops/bytes drops) 0/0
Class-map: Voice_Control (match-all)
12058676 packets, 594885057 bytes
5 minute offered rate 2000 bps, drop rate 0 bps
Match: access-group 105
Weighted Fair Queueing
Output Queue: Conversation 265 (depth/total drops/no-buffer drops) 0/39/0
Class-map: class-default (match-any)
10978117 packets, 10077936457 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
Weighted Fair Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 256
(total queued/total drops/no-buffer drops) 0/0/0
Bandwidth 50 (kbps) Max Threshold 64 (packets)
(pkts matched/bytes matched) 12058676/594885057
Here is the output from the core msfc:
Multilink1
service-policy output: Qos-Policy
class-map: Voice_Control (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
match: access-group 111
0 packets, 0 bytes
5 minute rate 0 bps
queue size 0, queue limit 12
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
bandwidth: kbps 50, weight 1
class-map: Voice (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
match: access-group 112
0 packets, 0 bytes
5 minute rate 0 bps
queue size 0, queue limit 225
packets output 0, packet drops 0 tail/random drops 0, no buffer drops 0, other drops 0
bandwidth: kbps 900, weight 29
class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
match: any
0 packets, 0 bytes
5 minute rate 0 bps
queue size 0, queue limit 530
packets output 0, packet drops 0
tail/random drops 0, no buffer drops 0, other drops 0
fair-queue: per-flow queue limit 132
Finally, here is the configuration utilized on both devices to classify and prioritize the voip traffic across the wan:
class-map match-all Voice_Control
match access-group 105
class-map match-all Voice
match access-group 104
policy-map Qos-Policy
class Voice
priority 800
class Voice_Control
bandwidth 50
class class-default
fair-queue
route-map Set-IP-Qos permit 10
match ip address 101
set ip precedence flash
!
route-map Set-IP-Qos permit 20
match ip address 102
!
route-map Set-IP-Qos permit 30
match ip address 103
set ip precedence routine
access-list 101 permit tcp any any range 2000 2002
access-list 101 permit tcp any any eq 1720
access-list 101 permit tcp any any range 11000 11999
access-list 101 permit udp any any eq 2427
access-list 102 permit udp any any range 16384 32767
access-list 103 permit ip any any
access-list 104 permit ip any any precedence critical
access-list 104 permit ip any any dscp ef
access-list 105 permit ip any any precedence flash
access-list 105 permit ip any any dscp af31
Any help is greatly appreciated.
