[nsp] Ethernet Protocol Type 9000

[Hudson Delbert J Contr 61 CS/SCBN]

Aaron

	you s/be receving this as the mac addy "CF0000000000"

	if so, this (type=9000)indicates that this is the iana issued ether
	type for the xerox ethernet configuration test protocol for loopback
	pseudo-devices. 

	just tells you that ethernet knows how to contact the loopback.

	leave it alone.

/* Del Hudson Contr 61CS/SCBN */


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Gould, Aaron M
(NRSW N61CR1W)
Sent: Thursday, April 22, 2004 8:50 AM
To: 'cisco-nsp at puck.nether.net'
Subject: [nsp] Ethernet Protocol Type 9000


When I sniff frames to and from a cisco router, I always see a frame of type
Loopback (ethertype 9000).  What is this for and is there any way of
disabling this?  is there an IOS command to disable it?

http://www.iana.org/assignments/ethernet-numbers

thanks

aaron


Aaron Gould (CACI)
Network Engineer, PACSW/CNRSW/RITSC
619-545-2569
619-981-4900 cell
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