12-11-2007 12:59 PM - edited 03-03-2019 07:53 PM
What is interface EO0/0? It seems to show up in show vtp commands and SNMP sweeps and nothing else. I'm seeing traffic on it, even though I haven't configured an interface EO0/0 in my conf.
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12-11-2007 02:31 PM
Hi, the EO0/0 interface is used by your switch to process VTP updates to itself bascially. It uses a loopback address 127.0.0.12 to update the switch as the first interface found. If I remember correctly the IOS has something to do with setup of EO0/0, but I don't remember alot on the subject, maybe an expert can add to my information.
HTH
12-11-2007 02:18 PM
What type of hardware are you seeing this ?
Can you post the portion of the VTP command where you see this interface ?
12-11-2007 03:09 PM
The hardware in question is a 6509 w/ Sup720. On my hardware, it only shows up on an SNMP sweep. However, every example I can google up of the interface shows it in "show vtp status".
E.G.:
12-11-2007 02:31 PM
Hi, the EO0/0 interface is used by your switch to process VTP updates to itself bascially. It uses a loopback address 127.0.0.12 to update the switch as the first interface found. If I remember correctly the IOS has something to do with setup of EO0/0, but I don't remember alot on the subject, maybe an expert can add to my information.
HTH
12-11-2007 03:10 PM
Thanks. That's what I was starting to suspect.
Interestingly, my system shows the address as 127.0.0.51 rather than 127.0.0.12, though your statement above agrees with the few examples I've been able to google up so far.
12-11-2007 03:28 PM
That's the Ethernet Out of Band interface.
It's referenced on this article
http://www.cisco.com/univercd/cc/td/doc/product/core/cis7600/software/122sr/swcg/diags.htm
12-11-2007 05:49 PM
I don't see reference in that document to EO0/0. (Though I do see reference to EOBC, which seems to be related?)
12-11-2007 06:21 PM
EO0/0 is short for EOBC0/0
Test-6503-2#sh eobc
Interface information:
Interface EOBC0/0 (idb = 0x5043D954)
Hardware is Mistral EOBC (revision 5)
Address is 0000.1100.0000 (bia 0000.1100.0000)
Encap size = 14 hardware status = 0x210840
IDB type = 18 IDB state = 4
Encap type = 0x1 Span encap size = 0
Error threshold = 5000 Error count = 0
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