Purpose of IP VRF Command
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06-11-2015 12:36 AM - edited 03-05-2019 01:39 AM
Dear Team,
what is the purpose are using " IP VRF Forwarding " command, very confused to know about this command, whether it is necessary to use in core switch like supervisor engine 4500 series.please say the correct answer. FYI here i enclosed the running config which they are using that command.
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ip vrf mgmtVrf
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Regards,
Ashok.M
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06-11-2015 01:01 AM
See here for the explaination of Fa1 and the mgmtVrf on the 4500 switch:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12-2/50sg/configuration/guide/Wrapper-46SG/sw_int.html#wp1138747
Effectively its just a physical out of band management port.
Some people use it, others don't.
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06-11-2015 04:45 PM
I find the question a bit confusing. In the text of the question he seems to be asking about ip vrf forwarding but in the example he shows ip vrf mgmtVrf.
The response from devils advocate addresses the use in the example. In that case it would create one routing table associated with the management interface which does create what amounts to an out of band connection for management. If the question is really about ip vrf forwarding then that would create another vrf and its associated routing table which would be separate from the global routing table.
HTH
Rick
Rick
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06-12-2015 02:41 AM
I wonder if he is referring to the fact that Fa1 is part of the mgmtVrf VRF as below:
interface FastEthernet1 ip vrf forwarding mgmtVrf
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06-12-2015 02:45 AM
Thank u sir,
still having little bit confuse, Could u please give with an example?
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06-11-2015 11:52 PM
Can you put that in context, or do you want a spiel on what VRF's do?
