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SNMP monitoring of Cisco ASA 5505

Posted on 2011-03-08
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Last Modified: 2012-05-11
We use What's Up Gold to monitor our Cisco devices.  On the area where it finds the Interfaces, it used to just list the two that were in use (i'm sure it is the inside and outside, Eth0/0 and 0/1).  This was when the IOS was version 7.x.   Now we have some 8.x IOS out there, and What's Up Gold discovers 14 Interfaces and I have no idea what they are.  Does anyone know why this might be happening?    
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Question by:jpletcher1
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Expert Comment

by:stsonline
ID: 35072103
Not sure why it shows 14 interfaces unless you've defined additional VLANs... it is showing all interfaces rather than those that are in use. The 5505 has a minimum of eight interfaces, Ethernet 0/0 through 0/7 and generally two or three VLANs (for inside, outside, and possibly DMZ).
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Author Comment

by:jpletcher1
ID: 35072751
Yes, there are 8 physical interfaces and then 2 vlans, one for inside and one for outside.
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Author Comment

by:jpletcher1
ID: 35072971
Here is a description for them that I was able to find.  

 snmp
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jpletcher1 earned 0 total points
ID: 35327537
I'm not sure why this changed, but for simplicity I just let them all be discovered and then I delete all of them other than the inside and outside interface, which is what we used to monitor.
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Author Closing Comment

by:jpletcher1
ID: 35360900
Wasn't able to come up with a good explanation of why this changed with the newer IOS.  So my solution is acutally more of a workaround so to speak.
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