We use CNAME which equals the hostname configured on the device. The CNAME points to the management interface of the device. For example a layer-2 switch uses VLAN 100 for management in our environment so we have A record like son-4n-l2-1-vl100.domain and CNAME son-4n-l2-1 that points to this A record. For routers/l3 switch we have loopbacks and our convention is to use Loopback 0 for the management interface, hence A record of son-3s-l3-1-lo0.domain with CNAME son-3s-l3-1 which points to this A record. We have a convention of <bldg>-<location>-<function>-<number> for naming our devices.
-----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Andrew Miehs Sent: Thursday, September 02, 2010 11:27 AM To: [email protected] 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 _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
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