NAT & Routing

Unanswered Question
Mar 11th, 2010
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Hi Guys,


we have problem with NAT/Routing if its asymmetric ,when we initiate a FTP from client eg we have two router doing HSRP and two WAN Links,


the traffic initiate from Client behind RouterA (Active on HSRP) but due to WAN Failure,the traffic goes via RouterB WAN Link,these two routers have a interlink between them.so the NAT happens on RouterA and routing happens on RouterB and due this the FTP transfer fails.


Any suggestion please do response with your valuable suggestion.



Rgds

Sanjeev


[email protected]

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Ganesh Hariharan Thu, 03/11/2010 - 23:55
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Hi Guys,


we have problem with NAT/Routing if its asymmetric ,when we initiate a FTP from client eg we have two router doing HSRP and two WAN Links,


the traffic initiate from Client behind RouterA (Active on HSRP) but due to WAN Failure,the traffic goes via RouterB WAN Link,these two routers have a interlink between them.so the NAT happens on RouterA and routing happens on RouterB and due this the FTP transfer fails.


Any suggestion please do response with your valuable suggestion.



Rgds

Sanjeev


Hi Sanjeev,


For TCP based application you need to have persistency between client and server as traffic is getting distrubed while transfer then ftp will definetly get failed.


Hope to help !!


Ganesh.H

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