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 Post subject: Veiw dropped packets on Cisco devices.
PostPosted: Thu Feb 24, 2011 12:51 am 
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Joined: Tue Jan 04, 2011 8:23 am
Posts: 4
Hi,

is it possible to view the dropped packet counter for each interface? For instance an additional graph with this information?

Greetings


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 Post subject: Re: Veiw dropped packets on Cisco devices.
PostPosted: Thu Feb 24, 2011 1:01 am 
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Joined: Sat Jan 29, 2011 4:01 pm
Posts: 8
Hi. I'm thinking you would use data query "snmp - interface statistics." In which case you would chose to graph Errors/Discarded Packets.


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 Post subject: Re: View dropped packets on Cisco devices.
PostPosted: Fri Feb 25, 2011 11:36 am 
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Joined: Tue Jan 04, 2011 8:23 am
Posts: 4
I wasn´t sure if error/discarded packets is the same as dropped packets.

I think the mib would be:

.1.3.6.1.4.1.9.2.2.1.1.26
locIfInputQueueDrops OBJECT-TYPE
-- FROM OLD-CISCO-INTERFACES-MIB
SYNTAX Integer
MAX-ACCESS read-only
STATUS Mandatory
DESCRIPTION "The number of packets dropped because the
input queue was full."
::= { iso(1) org(3) dod(6) internet(1) private(4) enterprises(1) cisco(9) local(2) linterfaces(2) lifTable(1) lifEntry(1) 26 }


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 Post subject: Re: Veiw dropped packets on Cisco devices.
PostPosted: Fri Feb 25, 2011 3:05 pm 
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Joined: Sat Jan 29, 2011 4:01 pm
Posts: 8
Yes, ifInDiscards is only a subset of locIfInputQueueDrops while ifOutDiscards is the same as locIfOutputQueueDrops.

The below cisco article talks about this near the bottom of the page:
http://www.cisco.com/en/US/tech/tk648/t ... 69ac.shtml

"What is the relationship between the show interfaces statements no buffers and input queue drops? Why do the inDiscards of SNMP give no buffers counts and not input queue drops, while the outDiscards of SNMP do give output queue drops?"


Here is a post where someone has modified their interface.xml file to add the locIfInputQueueDrops definition:

http://forums.cacti.net/post-39150.html


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