Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

delays with L2L VPN when applying encryption

I have a setup where L2L IPSEC tunnel is established between two routers. The problem is that when we apply encryption, there is a very high increase in the delay between the two sites. Please advise what could possibly be the problem knowing that I already did the below without success:

- Changed the hash and encryption algorithms

- Modified the mtu with the TCP-MSS-adjust command

2 REPLIES

Re: delays with L2L VPN when applying encryption

What model are the routers? Do they have the AIM encryption module installed? What are the resource being used w/o VPN? Then with VPN?

New Member

Re: delays with L2L VPN when applying encryption

Hi, the HQ router is a 3845 router running IOS c3845-advsecurityk9-mz.124-15.T7.bin without AIM module and the branch router is a 2811 router running IOS c2800nm-advsecurityk9-mz.124-15.T7.bin without AIM also.

The tests being used are mainly file transfers and icmp echoes as well

129
Views
0
Helpful
2
Replies