06-16-2005 12:15 PM - edited 03-03-2019 09:50 AM
Hey guys,
I have a site with a Cisco 1720 running 12.2(4)T3. They have a T1, 12 channels for voice, the other 12 for data (768kbps). I need to set them up to guarantee 2x44kbps bandwidth for two VoIP lines that always terminate to 66.239.20.0/24. The VoIP lines do work, but during congestion they enjoy jitter/packet loss. My config doesn't seem to be prioritizing correctly:
!
class-map match-all voice
match access-group 101
!
!
policy-map policy1
class voice
priority 96
class class-default
fair-queue
!
!
interface Serial0
description **XXXXXXXX**
ip address XXXXXXXXXXXX 255.255.255.252
ip access-group FilterInboundv2 in
ip access-group FilterOutbound out
ip nat outside
encapsulation ppp
service-policy output policy1
!
!
access-list 101 permit ip any 66.239.20.0 0.0.0.255
access-list 101 permit ip 66.239.20.0 0.0.0.255 any
Of particular note, I do not have a "rate-limit" command to shape the inbound traffic on s0; anybody have an idea why? Any other pointers would be helpful.
Thanks,
Randal
06-16-2005 07:23 PM
Hi,
You have to ensure the remote router also setup the appropriate QoS config.
Moreover, better not only match ip address for the QoS class. You may also consider precedence value as one of the matching rule.
HTH.
06-20-2005 09:03 PM
Hi,
If you can use some compression technique it will help you. Kindly see the below script.
!
interface Serial0
bandwidth 64
backup delay 1 1
backup interface Dialer2
no ip address
encapsulation ppp
down-when-looped
no cdp enable
ppp multilink
!
interface Virtual-Template1
ip unnumbered FastEthernet0
no ip split-horizon
fair-queue 64 16 0
ppp authentication chap
ppp multilink
ppp multilink fragment-delay 10
ppp multilink interleave
ip rtp priority 16384 16383 48
!
multilink virtual-template 1
!
Kindly try this script. It had helped me a lot
This is much better then Policy Map.
Regards,
Rakshit Jethva
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