MQC QOS Policy matching packets but not marking packets

rtjensen4 · ‎03-07-2014

Hi all!

I have an interesting issue on my 2911 with QOS Policy on my Ethernet WAN interface.

IOS:

Version 15.2(4)M3

The policy-map is such:

policy-map branch-qos-nlan

class VoIP-Control

bandwidth 16

set dscp af31

class VoIP-Voice

priority percent 30

set dscp ef

class DVR

shape average percent 20

random-detect

set dscp cs1

class Symitar

bandwidth 64

set dscp af21

class U-Genius

priority 1544

set dscp af32

class Video-Conf

bandwidth 1500

set dscp af41

class class-default

fair-queue

the Class-map i'm interested in is U-Genius:

class-map match-all U-Genius

match access-group name ITM-Video

Extended IP access list ITM-Video

10 permit ip 10.0.1.222 0.255.0.1 host 192.168.102.206 (42507348 matches)

Doing a show policy-int, I can see the class is being matched, but the QoS markings aren't being set:

<.... Emitted for Brevity ....>

Class-map: U-Genius (match-all)

42509425 packets, 34239877302 bytes

30 second offered rate 583000 bps, drop rate 0000 bps

Match: access-group name ITM-Video

Priority: 1544 kbps, burst bytes 38600, b/w exceed drops: 0

QoS Set

dscp af32

Packets marked 0

Class-map: Video-Conf (match-any)

0 packets, 0 bytes

30 second offered rate 0000 bps, drop rate 0000 bps

Match: dscp af41 (34)

0 packets, 0 bytes

30 second rate 0 bps

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops) 0/0/0

(pkts output/bytes output) 0/0

bandwidth 1500 kbps

QoS Set

dscp af41

Packets marked 0

Class-map: class-default (match-any)

1442648403 packets, 1486666303223 bytes

30 second offered rate 450000 bps, drop rate 0000 bps

Match: any

Queueing

queue limit 64 packets

(queue depth/total drops/no-buffer drops/flowdrops) 0/0/0/0

(pkts output/bytes output) 1444326495/1486651982044

Fair-queue: per-flow queue limit 16 packets

Has anyone seen this behavior before? Thanks in advance.

Vasilii Mikhailovskii · ‎03-12-2014

Hello.

What interface have you applied the policy to?

Do you have any tunnels originated on the interface and hving QoS applied?

Could you please provide complete output for sh policy-map int ... ?

rtjensen4 · ‎03-14-2014

Hi Vasilii,

This is applied to my Gig0/1 interface which faces my WAN. Your question about tunnels got me to thinking... and I think I have an explanation.

The WAN interface has GETVPN configured on it and I use qos pre-classify... I wonder if, since I'm marking it leaving the router, it's not marking it because of the encapsulation for the GETVPN. I wonder if I move the marking operation to my inbound LAN interfaces if it would work properly.

interface GigabitEthernet0/1
bandwidth 10000
ip address 192.168.xx.xx 255.255.255.128
ip access-group filter-terminal-servers in
no ip redirects
ip mtu 1400
ip authentication mode eigrp 10 md5
ip authentication key-chain eigrp 10 EIGRP-Keychain
ip pim sparse-mode
load-interval 30
duplex full
speed 10
rj45-auto-detect-polarity disable
crypto map GETVPN_MAP
service-policy output branch-qos

!

# sh policy-map int
GigabitEthernet0/1

Service-policy output: branch-qos-nlan

queue stats for all priority classes:
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 85269289/49093027324

Class-map: VoIP-Control (match-all)
5549066 packets, 840279084 bytes
30 second offered rate 1000 bps, drop rate 0000 bps
Match: dscp cs3 (24) af31 (26)
Match: ip precedence 3
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 5550572/840330288
bandwidth 16 kbps
QoS Set
dscp af31
Packets marked 761587

Class-map: VoIP-Voice (match-all)
38213392 packets, 11231807424 bytes
30 second offered rate 191000 bps, drop rate 0000 bps
Match: dscp ef (46)
Match: ip precedence 5
Priority: 30% (3000 kbps), burst bytes 75000, b/w exceed drops: 0

QoS Set
dscp ef
Packets marked 0

Class-map: DVR (match-all)
14402775 packets, 18167642266 bytes
30 second offered rate 438000 bps, drop rate 0000 bps
Match: access-group 100
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/975550/0
(pkts output/bytes output) 13427225/16818507062
shape (average) cir 2000000, bc 8000, be 8000
target shape rate 2000000
Exp-weight-constant: 9 (1/512)
Mean queue depth: 0 packets
class Transmitted Random drop Tail drop Minimum Maximum Mark
pkts/bytes pkts/bytes pkts/bytes thresh thresh prob

0 12946754/16145248972 639870/886311060 330658/455732476 20 40 1/10
1 480861/673699902 1915/2701562 3107/4390106 22 40 1/10
2 0/0 0/0 0/0 24 40 1/10
3 0/0 0/0 0/0 26 40 1/10
4 0/0 0/0 0/0 28 40 1/10
5 0/0 0/0 0/0 30 40 1/10
6 0/0 0/0 0/0 32 40 1/10
7 0/0 0/0 0/0 34 40 1/10
QoS Set
dscp cs1
Packets marked 75

Class-map: Symitar (match-all)
0 packets, 0 bytes
30 second offered rate 0000 bps, drop rate 0000 bps
Match: access-group name Symitar
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 0/0
bandwidth 64 kbps
QoS Set
dscp af21
Packets marked 0

Class-map: U-Genius (match-all)
47055898 packets, 37861219900 bytes
30 second offered rate 546000 bps, drop rate 0000 bps
Match: access-group name ITM-Video
Priority: 1544 kbps, burst bytes 38600, b/w exceed drops: 0

QoS Set
dscp af32
Packets marked 0

Class-map: Video-Conf (match-any)
0 packets, 0 bytes
30 second offered rate 0000 bps, drop rate 0000 bps
Match: dscp af41 (34)
0 packets, 0 bytes
30 second rate 0 bps
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops) 0/0/0
(pkts output/bytes output) 0/0
bandwidth 1500 kbps
QoS Set
dscp af41
Packets marked 0

Class-map: class-default (match-any)
1492012019 packets, 1499044830575 bytes
30 second offered rate 500000 bps, drop rate 0000 bps
Match: any
Queueing
queue limit 64 packets
(queue depth/total drops/no-buffer drops/flowdrops) 0/0/0/0
(pkts output/bytes output) 1493902053/1499029048228
Fair-queue: per-flow queue limit 16 packets