Hi guys,
Wonder if anyone can shed some light on this.
I have a particular 3640 router which is being used to provide data and voice access for a remote site.
The WAN link is a 100meg LES circuit connected to fe2/0 this interface runs consistently at around 3meg utilisation, so not busy at all.
The router has qos configured as per the config below..
-------part config -----
Class-map match-any voiptraffic
match ip precedence 5
class-map match-any contVOIPtraffic
match ip precedence 3
!
!
policy-map voice
class voiptraffic
priority 3000
class contVOIPtraffic
bandwidth 32
class class-default
fair-queue
!
!
Interface fe2/0
description WAN LINK TO HQ
ip address x.x.x.x
speed 100
duplex full
service-policy output voice
!
Interface fa0/0
description LAN Interface Data
ip address y.y.y.y
ip policy route-map Set-IP-QOS-routine
speed 100
duplex full
!
Interface fa0/0.10
Description LAN Interface VOICE
ip address v.v.v.v
etc...
!
access-list 113 permit ip any any
!
route-map Set-IP-QOS-routine permit 30
match ip address 113
set ip precedence routine
----- end part config -----
I am seeing loads of output queue drops on interface fe2/0. If I run the "show policy-map int fa2/0" the output indicates that the router is dropping packets which are marked as routine and not dropping any of the voip packets.
Part of the output is below.
Class-map: class-default (match-any)
6035745 packets, 1097376835 bytes
5 minute offered rate 618000 bps, drop rate 24000 bps
match: any
queuing
flow based fair queuing
maximum number of hashed queues 256
(total queued/total drops/no-buffer drops) 0/331408/0
I could understand it if it was dropping voip packets but I cant see why it is dropping routine packets, the wan circuit never runs above about 3 meg so cant see how it could be link congestion and there are no other errors on the interface, just for some reason this interface is dropping uncalssified packets.
Anyone shed some light on whats happening here !
Many Thanks
Shaun
