QoS (RPM)

Question

Hi, guys!, using MPLS VPN, using a MGX 8830 (RPM) providing QoS to costumer; costumer is complaining about voice cuts when passing data...we`re using Multilink (ppp) interfaces fot the costumer, the conf:
class-map match-any VOZ
match ip dscp ef
match ip precedence 5
class-map match-all Signaling
match access-group name Signaling
class-map match-all DataPlus
match ip dscp af22
policy-map QOS
class VOZ
priority percent 50
class Signaling
bandwidth percent 12
class DataPlus
bandwidth percent 25
class class-default
fair-queue
interface Multilink2001
description COSTUMER
ip vrf forwarding COSTUMER
ip address 1.1.1.1 255.255.255.252
max-reserved-bandwidth 88
service-policy output QOS
load-interval 30
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
multilink-group 2001
interface Virtual-Template1
description COSTUMER
no ip address
ppp multilink
multilink-group 2001
And the PVC for the RPM:
interface Switch1.2001 point-to-point
description COSTUMER
pvc 0/201
ubr 150
oam-pvc 10
encapsulation aal5ciscoppp Virtual-Template1
no protocol ip inarp
switch connection vcc 0 201 master remote
pcr 354
cost 4294967295
rpcr 480
rutil 100
util 100
In the CPE is seems OK the conf, in facto we applied an ACL on the CPE receiver interface (Multilink), and it seems is receiving good marking, i`m just not very sure about what (0) means...a port??:
Apr 19 09:40:34: %SEC-6-IPACCESSLOGP: list 102 permitted udp 1.1.1.1(0) -> 1.1.1.2 (0), 2 packets
Apr 19 10:49:05: %SEC-6-IPACCESSLOGP: list 101 permitted udp 1.1.1.1(5004) -> 1.1.1.2(5004), 1 packet
Apr 19 10:54:44: %SEC-6-IPACCESSLOGP: list 102 permitted udp 1.1.1.1(0) -> 1.1.1.2(0), 1002 packets
Apr 19 10:54:44: %SEC-6-IPACCESSLOGP: list 101 permitted udp 1.1.1.1(5004) -> 1.1.1.2(5004), 1018 packets
i can`t find any conf issue..can anyone give any ideas for troubleshooting?, thanks!!

Answer 1

Hi, thanks for the answer, yes , the policy is supposed to be working:
RPM#sh policy-map interface multilink 2001
Multilink2001
Service-policy output: QOS
Class-map: VOZ (match-any)
773079 packets, 44114342 bytes
30 second offered rate 0 bps, drop rate 0 bps
Match: ip dscp ef
773079 packets, 44114342 bytes
30 second rate 0 bps
Match: ip precedence 5
0 packets, 0 bytes
30 second rate 0 bps
Queueing
Strict Priority
Output Queue: Conversation 72
Bandwidth 50 (%)
Bandwidth 75 (kbps) Burst 1875 (Bytes)
(pkts matched/bytes matched) 773079/44114342
(total drops/bytes drops) 49/9996
Class-map: Signaling (match-all)
5 packets, 349 bytes
30 second offered rate 0 bps, drop rate 0 bps
Match: access-group name Signaling
Queueing
Output Queue: Conversation 73
Bandwidth 12 (%)
Bandwidth 18 (kbps) Max Threshold 64 (packets)
(pkts matched/bytes matched) 5/349
(depth/total drops/no-buffer drops) 0/0/0
Class-map: DataPlus (match-all)
0 packets, 0 bytes
30 second offered rate 0 bps, drop rate 0 bps
Match: ip dscp af22
Queueing
Output Queue: Conversation 74
Bandwidth 25 (%)
Bandwidth 37 (kbps) Max Threshold 64 (packets)
(pkts matched/bytes matched) 0/0
(depth/total drops/no-buffer drops) 0/0/0
Class-map: class-default (match-any)
2462195 packets, 380288459 bytes
30 second offered rate 0 bps, drop rate 0 bps
Match: any
Queueing
Flow Based Fair Queueing
Maximum Number of Hashed Queues 64
(total queued/total drops/no-buffer drops) 0/0/0
RPM#
Talking about the signaling, i`m using an ACL :
Extended IP access list Signaling
10 permit tcp any eq 1720 any (15615 matches)
20 permit tcp any any eq 1720 (344 matches)
In order to match these ports, the BW is a 128 kbps; and this problem only happens on an RPM with PPP, not with a normal router with CBWFQ with FR; everything seems to be OK, but the costumer`s config also seems OK..on an ACL that i put on the costumer`s Multilink i`m seeing that the packets are arriving matched; but the problem is still alive...any suggestions for test????, i`ll appreciate it...