07-01-2010 02:40 PM - edited 03-04-2019 08:56 AM
I have a 3Mbit link from A to B. My policy-map looks like this:
Policy Map To_B
Class VoiceRTP
priority 512
Class Control
bandwidth 256
Class VideoRTP
bandwidth 1024
Class Interactive
bandwidth 1024
Class class-default
Control is all the VoIP signaling protocols, icmp, eigrp, ospf, and snmp
Interactive is Citrix, ssh, and telnet
I did some testing and it seems that when there are amounts of class-default traffic, it is degrading the performance of everything else like VideoRTP and my ping latency jumps to 3000ms!
Does anyone have any advice? I read somewhere that I should set the "bandwidth" setting on my interface to 90% of my actual bandwidth. What do you think?
Vince
07-01-2010 02:42 PM
oops.. looks like I lost a word there.
I meant "large amounts of class-default traffic"
07-01-2010 06:42 PM
Ok so I shaped it to 90% of the interface bandwidth which is set to 3088 but I'm still getting rediculous ping rates of 2000-3000 ms.
Here is my Policy:
Policy Map To_B_Shaper
Class class-default
Average Rate Traffic Shaping
cir 95%
service-policy To_B
07-01-2010 08:26 PM
Can you post your configuration?
07-02-2010 10:10 AM
Thanks for your reply, shh, here it is.
Packets are being marked with this policy on the inbound interface:
class-map match-any RTP-Video
match protocol rtp video
match access-group name CUVAVideo
class-map match-any Priority
match protocol rtp audio
class-map match-any Control
match protocol mgcp
match protocol skinny
match protocol h323
match protocol sip
match protocol icmp
match protocol eigrp
match protocol ospf
match protocol snmp
class-map match-any Interactive
match protocol citrix
match protocol telnet
match protocol ssh
match access-group name ToCitrixServers
policy-map To_WAN
class Priority
set dscp ef
class Control
set dscp af41
class RTP-Video
set dscp af31
class Interactive
set dscp af21
class class-default
set dscp default
Here's the inbound interface:
interface GigabitEthernet0/0
description to London_Core_Switch3560
ip address 10.41.120.2 255.255.255.0
ip nbar protocol-discovery
ip pim sparse-dense-mode
ip igmp join-group 239.1.1.2
duplex auto
speed auto
h323-gateway voip interface
h323-gateway voip bind srcaddr 10.41.120.2
service-policy input To_WAN
Shaping and bandwidth policies are on the outbound interface. Here is the config for the outbound policy:
class-map match-any EF
match dscp ef
class-map match-any AF41
match dscp af41
class-map match-any AF31
match dscp af31
class-map match-any AF21
match dscp af21
policy-map To_Irvine
class EF
priority 512
class AF41
bandwidth 256
class AF31
bandwidth 768
class AF21
bandwidth 1024
class class-default
policy-map To_Irvine_Shaper
class class-default
shape average percent 95
service-policy To_Irvine
Here's the outbound interface:
interface FastEthernet0/0/0
description SAVVIS To Irvine
bandwidth 3088
ip address 192.168.104.1 255.255.255.0
duplex full
speed 100
service-policy output To_Irvine_Shaper
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