Ethernet Switches & Routers

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Occasional Contributor
Posts: 5
Registered: ‎02-05-2015

How to Solve "Sender Duplicate ACKs"

[ Edited ]

Hello,

 

We use FCIP 7800 series router on both sites. I have found  "Sender Duplicate ACKs"  on the tunnel (  from on source router ).

 

Normally we use MTU size 1492 and i have set to size both tunnel interfaces.. I have to tried 1464 and 1280 but not solved! help me please how can i solve this problem?

 

please below find my configuration;

 

source_router>    portcfg ipif ge0 create **filtered**.**filtered**.**filtered**.1 255.255.255.252 1464
dest_router>    portcfg ipif ge0 create **filtered**.**filtered**.**filtered**.2 255.255.255.252 1464

source_router>    portcfg fciptunnel 16 create **filtered**.**filtered**.**filtered**.2 **filtered**.**filtered**.**filtered**.1 150000 -c 3
dest_router>    portcfg fciptunnel 16 create **filtered**.**filtered**.**filtered**.1 **filtered**.**filtered**.**filtered**.2 150000 -c 3

 

Note: Dup ACKs growing FAST!!

Contributor
Posts: 23
Registered: ‎06-16-2015

Re: How to Solve "Sender Duplicate ACKs"

Are you experiencing congestion on that link?

Jacob Bartlett
http://bartlett.network
https://www.linkedin.com/in/jacobbartlett

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