eping on IP port 97

Answered Question
Sep 21st, 2011

Hi Everyone,

From this link(http://www.cisco.com/en/US/products/ps6366/products_tech_note09186a0080b1a506.shtml), I can see.

    Mobility ping over EoIP—This test runs over EoIP - IP port 97 and tests the mobility data traffic over the management interface.

    eping mobility_peer_IP_address

Note: Only one mobility ping test per controller can be run at a given time.

If there is a firewall present, make sure that the UDP port 16666 and IP port 97 are opened for communication between the WLCs.

My Question is, IP port 97 means TCP port 97 or UDP port 97, or both? I captured the communication between the Anchor controller and non-anchor controller, I couldn't see any packet with TCP or UDP port 97. Perhaps it's encrypted by LWAPP.

Any input will be appreciated.

Robert

I have this problem too.
0 votes
Correct Answer by pcroak about 3 years 6 months ago

Hello Robert,

Mobility data traffic is carried via Ethernet over IP (EoIP) which is IP protocol 97. This is the IP protocol number, not a TCP/UDP port value.

Your firewall rules should allow IP protocol 97 traffic between your WLCs. For some background reading on EoIP, please see RFC3378:

http://tools.ietf.org/html/rfc3378

Hope this helps!

-Patrick Croak

Wireless TAC

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Correct Answer
pcroak Wed, 09/21/2011 - 09:29

Hello Robert,

Mobility data traffic is carried via Ethernet over IP (EoIP) which is IP protocol 97. This is the IP protocol number, not a TCP/UDP port value.

Your firewall rules should allow IP protocol 97 traffic between your WLCs. For some background reading on EoIP, please see RFC3378:

http://tools.ietf.org/html/rfc3378

Hope this helps!

-Patrick Croak

Wireless TAC

robert.huang Wed, 09/21/2011 - 09:47

Thanks Patrick. I've rated your post as the correct answer.

George Stefanick Wed, 09/21/2011 - 15:30

Robert,

I did a quick FW / WLC topology that may be helpful to you ...

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