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New Member

Nexus 5020 questions

I have 2 questions...

1) How do I disable the web server? It appears to be the FC side of the box since it's titled "Cisco MDS 9000 Management". The standard "no ip http server" command doesn't work. I have looked through the command line documentation and don't see any relevant commands.

2) Is there a method to determine the SNMP ifIndex of each ethernet interface -- equivalent to the "show snmp mib ifmib ifindex" in IOS?


Re: Nexus 5020 questions

Good question on the Cisco Device Manager- I can't find a way to disable it, either. Writing an ACL to drop port 80 traffic seems kludgy.

As for the ifindex translateions, I haven't had much luck either.

Management is at OID.83886080

port channels start at OID.369098751 (+PC#)

Ethernet1/1 is at OID.486539264, and each sucessive port is at intervals of 4096.

Module 2 starts at 4096*128 + 1/1.

I assume Mod3 starts at 4096*128 * 2 + 1/1.

I've been running into the same problem with the 7k- cisco hasn't created anything in the private enterprise range so you can do any sort of easy translations, or calls to an OID.., so I'm unable to make much use of our tools to actually accomplish anything.

If anybody can show me what I'm obviously missing, I'd appreciate it.


Re: Nexus 5020 questions

Upon further thought, I'm guessing that the engineers on the Nexus team felt that if they could remove the uncertainty surrounding index numbers, there'd be no need for a lookup table.

It's pretty smart- I can guarantee that an interface on a 7k is going to have the same index number regardless of when it was inserted, if it's rebooted, which 7k it is, etc. There's no need for a translation table if you can programatically look up an interface and be correct 100% of the time.

But as for the people used to using the translations, it's a tough adjustment- the tools I have in place need to query legacy devices in the way they're "used to", and break out to this programatically superior way to query the new Nexus family of stuff.

And I don't know if this is going to be the way and the light for all cisco products going forward, or if it'll change with the next new product.

New Member

Re: Nexus 5020 questions

Watch CSCsx15633 to disable HTTP server.

"show interface snmp-ifindex" is available for the next release, 4.1(3).

Note NX-OS always uses persistent indicies, so an snmpwalk should yield the same information.