Do we need traffic shaping on spoke site if bandwidth is higher than on hub

[ciscoprolin]

Dear All,

we have a DMVPN Spoke site with 20 Mbit/s bandwidth on the WAN link.

The DMVPN Hub site only has 10 Mbit/s on the WAN link.

What do you think ? Is it necessary to throttle the traffic on the spoke end - eg. via shaping or can we just leave it as is.

We just want to make sure that we will not run into buffering/queuing problems on the hub end.

Thanks,

Thorsten

[Marcin Latosiewicz]

Thorsten,

It depends. If you're just sending a ping every 5 minutes over that DMVPN it's not going to make a difference. :-)

In a situation like this - where it's ISP limiting bandwidth and possibly one of spokes could affect all others I would look into priority Qing and/or bandwidth reservation for important traffic. You might be able to mitigate some of the bad effects.

M.

[Karsten Iwen]

It depends on your traffic. If the clients in the branch will only send small queries and get big answers, there probably won't be any problem at all. If they send big packets to the main office it will be a problem (a customer once had the idea to send out thousands of chrismas-mails with a 5 Meg TIFF attachment ...).

To be on the safe side, you should limit the traffic with shaping.

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