01-29-2009 08:10 AM - edited 03-04-2019 01:02 AM
Hi
I've a C1801 with IOS C180X Software (C180X-BROADBAND-M), Version 12.4(15)T1 experiencing a problem related to Qos.
The config is attached.
As soon as the ATM come up the "service-policy output cos-po2-bhw-atm-0-1-70" statement disapper from the config under ATM0.1 pvc 8/35.
*Jan 29 17:11:18: %LINK-3-UPDOWN: Interface ATM0, changed state to up
*Jan 29 17:11:19: %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0, changed state to up
*Jan 29 17:11:24: I/f ATM0.1 VC 8/35 class cos-map-bhw-fe-ge-0.0-vo requested bandwidth 80 (kbps), available only 0 (kbps)
*Jan 29 17:11:24: Service policy detach failed
#sh run interface atM 0.1
Building configuration...
Current configuration : 193 bytes
!
interface ATM0.1 point-to-point
bandwidth 128
ip address 10.205.1.22 255.255.255.252
no ip redirects
no ip proxy-arp
no snmp trap link-status
pvc 8/35
encapsulation aal5snap
!
Any idea ?
Tks
Ric
Solved! Go to Solution.
01-29-2009 11:24 AM
Hello Riccardo,
on other threads about this someone has reported that to be able to apply a CBWFQ to an ATM subinterface you need to define under the pvc some ATM Class of service
the default is an UBR (unspecified bit rate) that has no guaranteed resources.
I would try to configure some BW resources for the pvc using vbr-nrt.
Hope to help
Giuseppe
01-29-2009 08:12 AM
here's the config
C1801
!
class-map match-any cos-map-bhw-atm-0-0-1
match access-group name cos-map-acl-bhw-fe-0.0-vo
class-map match-any cos-map-bhw-fe-ge-0.0-bu
match access-group name cos-map-acl-bhw-fe-0.0-bu
class-map match-any cos-map-bhw-fe-ge-0.0-vo
match access-group name cos-map-acl-bhw-fe-0.0-vo
class-map match-any cos-map-bhw-fe-ge-0.0-st
match access-group name cos-map-acl-bhw-fe-0.0-st
!
!
policy-map cos-po2-bhw-atm-0-1-70
class cos-map-bhw-fe-ge-0.0-vo
priority 80
police 80000 conform-action transmit exceed-action transmit violate-action transmit
class cos-map-bhw-fe-ge-0.0-st
bandwidth 8
random-detect
class cos-map-bhw-fe-ge-0.0-bu
bandwidth 20
random-detect
class class-default
policy-map cos-map-bhw-fe-ge-0.0
class cos-map-bhw-fe-ge-0.0-vo
set ip dscp af41
class cos-map-bhw-fe-ge-0.0-st
set ip dscp af31
class cos-map-bhw-fe-ge-0.0-bu
set ip dscp af21
class class-default
set ip dscp af11
!
!
!
!
!
interface FastEthernet0
description Dati
ip address 192.168.116.49 255.255.255.240
duplex auto
speed auto
service-policy input cos-map-bhw-fe-ge-0.0
!
!
interface ATM0
bandwidth 4608
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.1 point-to-point
bandwidth 128
ip address 10.205.1.22 255.255.255.252
no ip redirects
no ip proxy-arp
pvc 8/35
encapsulation aal5snap
service-policy output cos-po2-bhw-atm-0-1-70
!
!
interface Vlan1
description Voip
ip address 192.168.116.145 255.255.255.240
ip tcp adjust-mss 1452
service-policy input cos-map-bhw-fe-ge-0.0
!
!
ip access-list extended cos-map-acl-bhw-fe-0.0-bu
permit ip any 192.168.28.0 0.0.0.255
ip access-list extended cos-map-acl-bhw-fe-0.0-st
remark *** Class Stream ***
deny ip any any
ip access-list extended cos-map-acl-bhw-fe-0.0-vo
permit ip any 192.168.52.0 0.0.0.255
permit ip any 192.168.53.0 0.0.0.255
remark *** Class Voice ***
!
etc
01-29-2009 11:24 AM
Hello Riccardo,
on other threads about this someone has reported that to be able to apply a CBWFQ to an ATM subinterface you need to define under the pvc some ATM Class of service
the default is an UBR (unspecified bit rate) that has no guaranteed resources.
I would try to configure some BW resources for the pvc using vbr-nrt.
Hope to help
Giuseppe
01-30-2009 05:53 AM
Ciao Giuseppe,
using cbr and/or vbr-nrt seems working...
Tks for your help
Ric
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