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New Member

Maximum UDP port forward

I have a Cisco 2801 router with C2801-IPBASE-M IOS. I have already done a lot of port forward. Now if I want to add more udp port forward it give the following error:

Maximum UDP forwarding ports in use

Is there any limitation of UDP port forward? Can it be maximized by changing the router or ios?

3 REPLIES
Bronze

Re: Maximum UDP port forward

Nat limitations are usually limited to the available memory in the router. Either that or you're trying to allocate more ports than exist on a given address.

New Member

Re: Maximum UDP port forward

I am not doing any nat there. We are providing a service for a software which need to be port forward. For each connectivity we need to forward 3 udp port with specific ip helper-address. Now the router is denying to add new portforward.

Cisco Employee

Re: Maximum UDP port forward

Fakrul,

There is indeed a hard limit of 200 ports you can configure for UDP flooding.

Regards,

Harold Ritter
Sr. Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México 
Paseo de la Reforma 222 Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
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