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New Member

management interface on 3750

Hi,

is there some way i'm not aware of to have a dedicated management interface on a 3750 switch? I saw the other day that on the ASA's you can tag an interface as "management-only" but there's no equivalent for IOS as far as i'm aware. Currently my attempts to have a dedicated management ip address for a 3750 has meant the return traffic has had to go back out following the IOS default routes. these produce asymmetric routes through firewalls so it fails. instead i have to manage these particular boxes on the live data IP addresses, which i'm really not keen on. non-routing Catalysts are naturally fine, but as soon as i want to route traffic on the box, the management access really suffers.

6 REPLIES
New Member

Re: management interface on 3750

Have you created multiple VLANs for your production traffic? Would seem what you are looking for is a dedicated port for management traffic and management IP address, if so this would be best achieved by dedicating VLAN1 for management traffic and have all other data on separate VLANs.

New Member

Re: management interface on 3750

well i have a management vlan yes (not vlan1 for security reasons of course...) but the point is if I have an IP address on that vlan then if i'm not coming from an address local to that subnet, it follows default routes back to my management client, which is asymetric. there is no way to provide a "management gateway" or anything. i know that in the ios config when routing is enabled you can set a "default gateway" and a route to "0.0.0.0" which i initially hoped would serve different functions, but they don't and the latter just overrides the former.

Purple

Re: management interface on 3750

The default gateway only comes into play if you turn ip routing off on the 3750 , otherwise you have to use a default static . does the 3750 need to route ??? Do you have a routing protocol running on the 3750 , if so you could just set up a loopback interface .

New Member

Re: management interface on 3750

Glen,

Will u Plz explain me how Stacking in switch works?

Re: management interface on 3750

Please use the link below for switch stack functionality.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12225see/scg/swstack.htm

-amit singh

New Member

Re: management interface on 3750

we do need to route on the boxes, but it's only basic stuff on an SMI image, no protocols running at the moment. To be honest i've no experience with loopback interfaces, how would they help in this scenario?

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