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Community Member

Cisco Relay Agent

Hello i need some information about the Relay Agent

the background is i want to avoid unnecessary traffic on our network connection so i must know which protocols i do not need in the ip helper-address i know that the ports are enabled automatically but can i let out some??? and which do you know the names

The list of Protocols which are rated:

> * Trivial File Transfer Protocol (TFTP) (port 69)

> * DNS (port 53), time service (port 37)

> * NetBIOS name server (port 137)

> * NetBIOS datagram server (port 138)

> * Boot Protocol (DHCP/BootP) client and server datagrams (ports 67

> and 68)

> * Terminal Access Control Access Control System (TACACS) service

> (port 49)

> * IEN-116 name service (port 42)

Thank for Information please wirte back soon

Daniel Hoffmann

1 REPLY
Community Member

Re: Cisco Relay Agent

Hi,

Sorry if I misunderstand your question. You can use " ip forward-protocol udp ... " command to add some UDP port or disable some using "no ip forward-protocol udp ..."

Regards

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