IPv6 RIP port number

From: Huan Pham (Huan.Pham@peopletelecom.com.au)
Date: Fri Jun 20 2008 - 02:24:57 ART

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Hi GS,

All documentation shows that RIPng uses UDP port 521, (whereas RIP
version1 and version 2 uses UDP port 520).

R1#sh ipv6 rip | in port
RIP process "RIPng", port 521, multicast-group FF02::9, pid 163

However, when I tried an acl to match RIPng packets, the IOS online help
info refering to UDP520. This made me confused.

R1(config)#ipv6 access-list TEST
R1(config-ipv6-acl)#permit udp any any eq ?
rip Routing Information Protocol (router, in.routed, 520)

I believe this must be a mistake, isn't it. Just want confirmation from
group. Thanks.

Cheers,

Huan

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