Cisco Systems VLAN Question

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Subject Author Date
VLAN Question tdenham735 07-25-07
Posted by on July 25, 2007, 12:41 pm
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I have always setup VLAN's using a Cisco Switch and Router, however
I'm hearing that it's possible to setup a 3560 Switch with multiple
VLAN's and also route between the VLAN's.

Is this true or do I still need a Cisco Router?

My guess is that I still need the router.

Thanks in advance!


Posted by on July 25, 2007, 12:58 pm
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On Jul 25, 12:41 pm, tdenham...@gmail.com wrote:
> I have always setup VLAN's using a Cisco Switch and Router, however
> I'm hearing that it's possible to setup a 3560 Switch with multiple
> VLAN's and also route between the VLAN's.
>
> Is this true or do I still need a Cisco Router?
>
> My guess is that I still need the router.
>
> Thanks in advance!

Just as a followup, I see that some switches will do L3 routing and a
separate module is needed. Would this be a software module to allow
"ip enable routing"?

Currently if I enter "ip enable routing" it's not a valid command on
the 3560.

Thanks again:)


Posted by Chris on July 25, 2007, 1:15 pm
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On Wed, 25 Jul 2007 16:58:31 -0000, tdenham735@gmail.com wrote:

> On Jul 25, 12:41 pm, tdenham...@gmail.com wrote:
>> I have always setup VLAN's using a Cisco Switch and Router, however
>> I'm hearing that it's possible to setup a 3560 Switch with multiple
>> VLAN's and also route between the VLAN's.
>>
>> Is this true or do I still need a Cisco Router?
>>
>> My guess is that I still need the router.
>>
>> Thanks in advance!
>
> Just as a followup, I see that some switches will do L3 routing and a
> separate module is needed. Would this be a software module to allow
> "ip enable routing"?
>
> Currently if I enter "ip enable routing" it's not a valid command on
> the 3560.
>
> Thanks again:)

I think that the 3560 switch only allows one active layer3 vlan interface,
usually used for management so you would have to trunk vlans to a router to
route between them.

The command is 'ip routing', not 'ip enable routing'

Chris.

Posted by Lovejoy on July 25, 2007, 1:15 pm
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> On Jul 25, 12:41 pm, tdenham...@gmail.com wrote:
> > I have always setup VLAN's using a Cisco Switch and Router, however
> > I'm hearing that it's possible to setup a 3560 Switch with multiple
> > VLAN's and also route between the VLAN's.
> >
> > Is this true or do I still need a Cisco Router?
> >
> > My guess is that I still need the router.
> >
> > Thanks in advance!
>
> Just as a followup, I see that some switches will do L3 routing and a
> separate module is needed. Would this be a software module to allow
> "ip enable routing"?
>
> Currently if I enter "ip enable routing" it's not a valid command on
> the 3560.
>
> Thanks again:)
>


You can set up vlans on just about any Cisco switch, and can "switch"
or route between them (intra-vlan routing)....

http://www.cisco.com/en/US/tech/tk389/tk815/tk857/tsd_technology_support
_sub-protocol_home.html

depending on the IOS image. The command to enable routing in IOS is ip
routing.


Lovejoy

--
===========================================================
This space for lease....

Posted by on July 25, 2007, 1:23 pm
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>
>
>
> > On Jul 25, 12:41 pm, tdenham...@gmail.com wrote:
> > > I have always setup VLAN's using a Cisco Switch and Router, however
> > > I'm hearing that it's possible to setup a 3560 Switch with multiple
> > > VLAN's and also route between the VLAN's.
>
> > > Is this true or do I still need a Cisco Router?
>
> > > My guess is that I still need the router.
>
> > > Thanks in advance!
>
> > Just as a followup, I see that some switches will do L3 routing and a
> > separate module is needed. Would this be a software module to allow
> > "ip enable routing"?
>
> > Currently if I enter "ip enable routing" it's not a valid command on
> > the 3560.
>
> > Thanks again:)
>
> You can set up vlans on just about any Cisco switch, and can "switch"
> or route between them (intra-vlan routing)....
>
> http://www.cisco.com/en/US/tech/tk389/tk815/tk857/tsd_technology_support
> _sub-protocol_home.html
>
> depending on the IOS image. The command to enable routing in IOS is ip
> routing.
>
> Lovejoy
>
> --
> ===========================================================
> This space for lease....

Brain stink...I meant "ip routing":(

Seems I need to setup for intra-vlan routing. The link above was
broke, or else required special access, however I did find this:

http://www.cisco.com/en/US/docs/switches/lan/catalyst5000/hybrid/routing.html

Seems like this is what I need to do.

Thanks much Lovejoy!!!


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