ASR - IPSEC, GRE, channel group, and MTU Questions

Unanswered Question
Nov 13th, 2008

I have an ASR1004 and am trying to load-balance a 1.5G data rate over two 1-Gig ports using IPSEC ports, but I have a few questions.

1. Can GRE support a 9K mtu

2. Can you run IPSEC on a channel-group

3. Can the ASR load-balance per- S&D on a channel-group?

I currently have two separate tunnels, one on each outbound gig link with OSPF running. However, I can't get a 7000 mtu w/ the DF bit set through to the distant end. I am guessing this is because of the GRE interface.

So is it possible to run IPSEC on a channel-group and have this load balance per S&D? I need to use the BW of both ports.

Thanks for the help!

I have this problem too.
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owillins Wed, 11/19/2008 - 11:20

The ASR1004 router we can only send packets with a maximum MTU size of 1438 Bytes over the encrypted tunnel.

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