Traffic over IPSEC slower than usual


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L1 Bithead

Traffic over IPSEC slower than usual

Hello, Recently we have been facing issues where traffic over IPSEC tunnel towards AWS is very slow. when downloading a file ( over SCP) getting less than 100KB/s from a resource in AWS over ipsec tunnel.  Didn't had this issues for months but it started recently. Phase1 and 2 are established. Tunnel interface MTUs are also same. Any idea where to look at?

Another Firewall (PAs) in another region connect to same resource in AWS over ipsec and I'm getting 25-30MB/s.


L7 Applicator

have you doneany troubleshooting? are you seeing fragmentation or any particular error or 'strange' counter in global counters ?

Tom Piens -
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L3 Networker

Check for MTU issues like counters with MTU exceeded .We have set it up to 1427.

L2 Linker

Hello Hafeezy2j


 Has this problem been resolved. If the problem is not resolved, let us know and we can help.

As others have suggested , a packet capture would be a good place to start . If the Packet capture does not help, if you open a ticket with TAC , we can help take a deeper look into what is going on.



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