From: Carlos Trujillo Jimenez (nergal888@hotmail.com)
Date: Wed Sep 26 2007 - 23:25:56 ART
Please, If someone please can help me confirming if this configuration will
or will not work according to the specifications:
I want so that voip traffic is less likely to be dropped than http traffic
if the output interface becomes congested.
So I perform first classification and marking at the ingress interface.
and the random detect based in the classified packets at the egress
interface.
class-map match-all VOIP
match ip rtp 16384 16383
class-map match-all MORE-LIKELY-DROP
match ip dscp af13
class-map match-all HTTP
match protocol http
class-map match-all LESS-LIKELY-DROP
match ip dscp ef
!
!
policy-map DROP-IF-CONGESTED
class LESS-LIKELY-DROP
bandwidth percent 50
random-detect dscp-based
class MORE-LIKELY-DROP
bandwidth percent 25
random-detect dscp-based
policy-map CLASSIFICATION-MARKING
class VOIP
set ip dscp ef
class HTTP
set ip dscp af13
interface FastEthernet0/0
ip address 128.1.5.5 255.255.255.0
service-policy input CLASSIFICATION-MARKING
interface Serial0/0
ip address 128.1.125.5 255.255.255.0
service-policy output DROP-IF-CONGESTED
verifrication:
p4r5#show policy-map interface
FastEthernet0/0
Service-policy input: CLASSIFICATION-MARKING
Class-map: VOIP (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip rtp 16384 16383
QoS Set
dscp ef
Packets marked 0
Class-map: HTTP (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: protocol http
QoS Set
dscp af13
Packets marked 0
Class-map: class-default (match-any)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: any
Serial0/0
Service-policy output: DROP-IF-CONGESTED
Class-map: LESS-LIKELY-DROP (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp ef
Queueing
Output Queue: Conversation 265
Bandwidth 50 (%)
(pkts matched/bytes matched) 0/0
(depth/total drops/no-buffer drops) 0/0/0
exponential weight: 9
mean queue depth: 0
dscp Transmitted Random drop Tail drop Minimum Maximum
Mark
pkts/bytes pkts/bytes pkts/bytes thresh thresh
prob
af11 0/0 0/0 0/0 32 40
1/10
af12 0/0 0/0 0/0 28 40
1/10
af13 0/0 0/0 0/0 24 40
1/10
af21 0/0 0/0 0/0 32 40
1/10
af22 0/0 0/0 0/0 28 40
1/10
af23 0/0 0/0 0/0 24 40
1/10
af31 0/0 0/0 0/0 32 40
1/10
af32 0/0 0/0 0/0 28 40
1/10
af33 0/0 0/0 0/0 24 40
1/10
af41 0/0 0/0 0/0 32 40
1/10
af42 0/0 0/0 0/0 28 40
1/10
af43 0/0 0/0 0/0 24 40
1/10
cs1 0/0 0/0 0/0 22 40
1/10
cs2 0/0 0/0 0/0 24 40
1/10
cs3 0/0 0/0 0/0 26 40
1/10
cs4 0/0 0/0 0/0 28 40
1/10
cs5 0/0 0/0 0/0 30 40
1/10
cs6 0/0 0/0 0/0 32 40
1/10
cs7 0/0 0/0 0/0 34 40
1/10
ef 0/0 0/0 0/0 36 40
1/10
rsvp 0/0 0/0 0/0 36 40
1/10
default 0/0 0/0 0/0 20 40
1/10
Class-map: MORE-LIKELY-DROP (match-all)
0 packets, 0 bytes
5 minute offered rate 0 bps, drop rate 0 bps
Match: ip dscp af13
Queueing
Output Queue: Conversation 266
Bandwidth 25 (%)
(pkts matched/bytes matched) 0/0
(depth/total drops/no-buffer drops) 0/0/0
exponential weight: 9
mean queue depth: 0
p4r5#
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