Hi All,
I have Cisco router 2811 (IOS Version 12.3(14)T7) with a switch-module.
This switch placed on datacom premisses acts as a junction of multiply channels (VLANs) from branch offices. All VLANs comes through 1 fastethernet port fa 0/0/0 on a switch module.
Current config of 2811:
class-map match-all data-stream
match ip dscp default
class-map match-any voice-signaling
match ip dscp af31
match ip dscp cs3
class-map match-any network-control
match ip dscp cs6
match ip dscp cs2
match access-group name IKE
class-map match-all voice-stream
match ip dscp ef
class-map match-any VIP
match access-group name VIP
policy-map WAN-RELATIVE
class voice-stream
priority percent 50
class voice-signaling
bandwidth remaining percent 5
class network-control
bandwidth remaining percent 5
class data-stream
bandwidth remaining percent 15
class VIP
bandwidth remaining percent 20
class class-default
fair-queue
policy-map 128K
class class-default
shape average 128000
service-policy WAN-RELATIVE
interface Vlan514
description << VLAN 514 >>
bandwidth 128
ip address 172.22.0.17 255.255.255.252
load-interval 30
crypto map CRYPTOMAP
service-policy output 128K
!
interface FastEthernet0/0/0
description << TRUNK >>
switchport trunk allowed vlan 1,241,379,402,415,419,444,514,521,640,1002-1005
switchport trunk allowed vlan add 641,830,834,904
switchport mode trunk
load-interval 30
duplex full
speed 100
All cryptomaps are configured with "qos pre-classify"
branch routers - Cisco 1811 (IOS Version 12.4(6)T2) are configured in the same manner. ADSL modem with fastethernet port is connected to the fastethernet0 port on Cisco1811.
Here is a part of the 1811's config
class-map match-all data-stream
match ip dscp default
class-map match-any voice-signaling
match ip dscp af31
match ip dscp cs3
class-map match-any network-control
match ip dscp cs6
match ip dscp cs2
match access-group name IKE
class-map match-all voice-stream
match ip dscp ef
class-map match-any VIP
match access-group name VIP
policy-map WAN-RELATIVE
class voice-stream
priority percent 50
class voice-signaling
bandwidth remaining percent 5
class network-control
bandwidth remaining percent 5
class data-stream
bandwidth remaining percent 15
class VIP
bandwidth remaining percent 20
class class-default
fair-queue
policy-map 128K
class class-default
shape average 128000
service-policy WAN-RELATIVE
interface FastEthernet0
bandwidth 128
ip address 172.22.0.18 255.255.255.252
load-interval 30
duplex auto
speed auto
crypto map CRYPTOMAP
service-policy output 128K
!
But QoS doesn't work!
While executing command on 2811 "sh policy-map int vlan514" i can see that traffic in class map default exceeds 128K and no drops occurred! Also voice quality is extremely poor. Even phone registration drops!
Partially output from the command ?sh policy-map int vlan514? executed on Cisco 2811
Class-map: class-default (match-any)
1568 packets, 1495583 bytes
30 second offered rate 224000 bps, drop rate 0 bps
Match: any
Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 16
