10-16-2013 03:25 PM - edited 03-04-2019 09:20 PM
I have configured QoS, for marking some packets as CS2 in a Cisco 3560G with a 12.2(55)SE. But I check in a router that is the next-hop and dont see the packets marked.
! This is the internal interface:
interface Vlan1888
description usuarios-gbs-claro
ip address 10.125.1.74 255.255.255.128 secondary
ip address 10.125.1.1 255.255.255.128
no ip redirects
load-interval 30
service-policy input qos-claro
end
! This is the external interface:
interface Vlan688
description acceso-claro-gb
ip address 10.125.2.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip mroute-cache
load-interval 30
end
! This is the policy map of the internal interface:
Policy Map qos-claro
Class class-qos-claro-gbs
set dscp cs2
Class class-default
set dscp cs2
plm-yob-as#show clas
plm-yob-as#show class-map class-qos-claro-gbs
Class Map match-all class-qos-claro-gbs (id 1)
Match access-group name qos-claro-gbs
plm-yob-as#show acce
plm-yob-as#show access-l
plm-yob-as#show access-lists qos-claro-gbs
Extended IP access list qos-claro-gbs
10 permit ip 10.125.1.0 0.0.0.127 172.19.63.0 0.0.0.255
20 permit ip 10.125.1.0 0.0.0.127 172.19.44.0 0.0.0.255
30 permit ip 10.125.1.0 0.0.0.127 172.19.34.0 0.0.0.255
40 permit ip 10.125.1.0 0.0.0.127 172.19.33.0 0.0.0.255
50 permit ip 10.125.1.0 0.0.0.127 172.19.32.0 0.0.0.255
60 permit ip 10.125.1.0 0.0.0.127 172.19.93.0 0.0.0.255
70 permit ip 10.125.1.0 0.0.0.127 172.19.74.0 0.0.0.255
80 permit ip 10.125.1.0 0.0.0.127 172.19.73.0 0.0.0.255
90 permit ip 10.125.1.0 0.0.0.127 172.19.72.0 0.0.0.255
100 permit ip 10.125.1.0 0.0.0.127 172.19.71.0 0.0.0.255
110 permit ip 10.125.1.0 0.0.0.127 192.168.5.0 0.0.0.255
120 permit ip 10.125.1.0 0.0.0.127 host 10.244.2.196
130 permit ip 10.125.1.0 0.0.0.127 192.168.1.0 0.0.0.255
plm-yob-as#
And this is the output of the next hop:
rMPLS_IBM_LaMolina#sh int description | i 1852877
Gi4/0.100688 up up CID 1852877 Ibm Del Peru S.A.C. Sede (AMOV - Principal)
rMPLS_IBM_LaMolina#sh ip cache verbose flow | i Gi4/0.100688
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 18 75
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 1A 46
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 1A 25
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 1A 40
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 1A 20
Gi4/0.100688 10.125.1.60 Gi0/1 172.19.73.79 06 00 1A 11
Gi4/0.100688 10.125.1.31 Gi0/1 172.19.72.144 06 00 18 168
As you see, it apears as 00 (not marked).
QoS is enabled in the switch:
plm-yob-as#show mls qos
QoS is enabled
QoS ip packet dscp rewrite is enabled
And I am using
mls qos trust dscp
command.
What do you suggest me to check? I was thinking of upgrading the IOS.Thanks!
Solved! Go to Solution.
10-16-2013 06:11 PM
10-16-2013 06:11 PM
Hi,
Do you have mls qos vlan-based on the physical port?
HTH,
Lei Tian
10-17-2013 10:09 AM
Thanks Lei Tian!
That was it...
10-16-2013 06:16 PM
Did you check whether the ISP is remarking the traffic? I doubt this, but still check. You can try capturing from the outside interface of the switch to make sure you are getting the correct DSCP headers.
What does the output of the "show policy-map interface vlan 1888" say?
Sachin
10-17-2013 07:20 AM
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