[c-nsp] RANCID Alternative - was HEADS UP: vlan_mgr crashing in NX-OS 5.2(3)

Guillermo Ruiz gruizesteban at gmail.com
Tue Dec 13 06:39:16 EST 2011


Kron script is the old way used to backup files (IOS). Problem was
that in earlier NX-OS releases there was no TCL-TK scripting
available. We had only short EEM scripting using objects, but it was
useful only to control vPC peer-link and keepalive status in ordert to
avoid blackholing traffic when designed with ASA firewalls (older fw
versions did not support port-channels). With the new releases you can
pick old methods like the kron scripting. Even you can configure short
scripts to do some SLA testing without the need of Netflow :-)

2011/12/13, Daniel Hooper <dhooper at gold.net.au>:
>> On Dec 13, 2011, at 5:09 AM, Bernhard Schmidt wrote:
>> Hey,
>> just a quick heads up, maybe someone is hitting that, too. Since
>> upgrading our test Nexus 7000 from 5.2(1) to 5.2(3) this morning we
>> have a failover due to a crashing vlan_mgr process every hour. It
>> turns out "sh vlan" (which is executed by RANCID every hour) reliably
>> kills the box.
>>> Let me know if you have any better results than we did in asking Cisco to
>>> use rancid in their test suite.
>>> We have seen numerous bugs that were caught by rancid (including crash
>>> info that testing folks should have  observed imho).
>>>	- Jared
> Hi,
> Just on the topic of rancid and Cisco, I've seen a couple of alternative
> methods posted around the place recently of different ways to keep a device
> config backed up and was just curious as to whether people are using these
> instead of rancid?
> I've seen people talk about using SNMP and also a kron script to
> automatically upload the config to a remote web/ftp server, is this a newer
> better way?
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