[c-nsp] DNS Naming conventions for Switches

[cisconsp at SecureObscure.com]

Device and interface naming is a fairly religious topic in most places. I
snapped a screenshot from one of our docs and uploaded a picture:
http://img842.imageshack.us/i/interfacenaming.png/
or 
http://img842.imageshack.us/img842/4277/interfacenaming.png
Hopefully one of those 2 links works.

We basically use the abbreviated interface name from the table linked above.
interface.device.[sub].domain.com

John



-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Andrew Miehs
Sent: Thursday, September 02, 2010 11:27 AM
To: cisco-nsp at puck.nether.net
Subject: [c-nsp] DNS Naming conventions for Switches

Hi all,

have spent the last couple of hours looking and haven't been able to find a
satisfactory solution to naming cisco siwtch interfaces.

I am currently looking after a lot of Cisco 6500s and would like to clean up
DNS so that reverse lookups = forward etc.

I would like to suggest that we do the following:

  lo1.switchname.domain.com
  gi1-1-1.switchname.domain.com
  po1.switchname.domain.com
  v1.switchname.domain.com
  te2-1-1.switchname.domain.com

  switchname.domain.com CNAME -> lo1.switchname.domain.com

lo1 (loopback 1) is the management IP address of the switch.

I have noticed however that some NMS solutions uses the reverse lookup of
the entered address (in this case 'switchname') for filling in the name in
the software.

Does anyone have any better suggestions, or should I just enter the
management interface into DNS without the 'lo1' and on the switches without
loopbacks?
I have the same issue with the 3750s - although there the management
interface is a vlan interface, and not a loopback.

Thanks for your comments,

Andrew
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