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Maximum UDP port forward

fakrul
Level 1
Level 1

‎04-27-2008 02:36 AM - edited ‎03-05-2019 10:38 PM

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?

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3 Replies 3

jcoke
Level 3
Level 3

‎04-27-2008 11:49 AM

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.

0 Helpful

fakrul
Level 1
Level 1
In response to jcoke

‎04-27-2008 08:08 PM

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.

0 Helpful

Harold Ritter
Cisco Employee
Cisco Employee

‎04-27-2008 01:04 PM

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
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Cuauhtémoc, Juárez
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