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New Member

GRE

Hi ,

Observing the customers with GRE configured are getting less speeds than normal. Their traffic is via the tunnel. But the download speed is very less though we have given our premium service over fiber.

Rgds

Rakesh

2 REPLIES
Cisco Employee

Re: GRE

Are they running just GRE or GRE over IPSec? Have you tried to do a packet trace to see if you are getting a lot of retransmissions? Maybe try to adjust the mtu on the GRE to about 1400 to accomodate

the extra header of GRE (and IPSec if ever) to avoid fragmentation.

New Member

Re: GRE

Hi ,

No we are not running IPSec . Its plain GRE. Though latency is fine , d/w load and throughput is less. The mtu has been made 1500 as of now. Should i dec further.

rgds

Rakesh

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