Reserve BW for Video Conferencing

[rvg2k]

Hi,

We have a Cisco 1841 router at Branch end and a Cisco 2821 router at the HO connected by a 2MB Leased line. There is a Video Conferencing device setup in the branch office . We want to reserve 1MB bandwidth for the video conferencing and leave the remaining BW for Data . The traffic between the locations is passed through the tunnel using the static routes . Please suggest the suitable solution  .

[Joseph W. Doherty]

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Posting

CBWFQ with 1 Mbps "reserved" for video should do.  This might be applied, depending on platform and/or IOS version, on the tunnel interface or the physical interface.  Actual CBWFQ may vary somewhat also depending on platform and/or IOS version.

Why a tunnel on a leased line?  Is the lease line dedicated p2p or running across some kind of "cloud", like the Internet.  If the latter, is there non-tunnel traffic across the leased line too?

[Marwan ALshawi]

Hi there

first of all you need to identify how and what type fo marking you video endpoint mark the signaling and RTP/media traffic ?

if you are not sure then you could use ACL to match all traffic coming from the VC endpoint and match with class match

normally with video traffic get marked as DSCP AF41 but this is something you need to find out always do not mark VC RTP as video and audio just keep it one bundle

example using ACL to match all traffic from the VC endpoint

ip access-list 100 permit ip host x.x.x.x any

class-map VC

match ip access-group 100

policy-map CE-EDGE

class VC

bandwidth 1000

above used CBWFQ as video is a bit less sensitive than VOIP but is it more busty traffic

shaping interface ( for buffer with VC busty traffic )

policy-map QoS-2M

class class-default

   shape average 2000000 1000000

   service-policy CE-EDGE

int fax/x   outside interface

service -policy output QoS-2M

- you mentioend tunnel in the post not sure if you are using VPN or GRE tunnle interface and why ? if yes although this is not good with video but you need to apply the above policy to the tunnel interface

HTH

if helpful Rate