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In reviewing the agenda from UKNOF which I was regrettably unable to attend, three talks of an Irish origin stood out.

• The realities of LLU in Ireland from Colin Whittaker of Magnet (the title says it all). There was also a British view offered: LLU in the UK;
• NOC Tools from Donal O’Cearbhaill where he discussed the many tools they use at HEAnet to manage, provision and monitor the Broadband for Schools project; and
• Network Architecture of Joost by Colm MacCarthaigh. This one is really interesting in terms of how they plan to manage the massive data transmission requirements of on-demand video and the design of a fault tolerant network service. I really like the way they their code is prefix aware and are planning AS-level awareness. Nice. Actually an interesting thread broke out about this on NANOG at the start of the year.

This post is as much a reference for myself as it is for others. I had a need today to start graphing E1/PRI channel usage on some Cisco AS5300′s. The current priority is a simple graphical representation of the actual usage:

Hopefully at some point over the next couple of weeks I may expand this to other more interesting information such as average call duration, etc that can be useful to diagnosing issues almost as they happen.

The Cacti XML can be found here and I just posted the same to Cacti’s own forums here.

The CISCO-POP-MGMT-MIB provides the MIBs for this information and the ones I specifically used (for my AS5300 which are all identical with 4 E1/PRI ports) are cpmDS1ActiveDS0s.0.x (or .1.3.6.1.4.1.9.10.19.1.1.9.1.3.0.x). Replace x with the appropriate port number (0-3) as required.

Explore the available information yourself with:

$ snmpwalk -Os -c <community> <host> .1.3.6.1.4.1.9.10.19