From: Gilbert N. Avendano (gilbert@globenet.com.ph)
Date: Thu Jul 03 2003 - 15:16:43 GMT-3
Hi group!
By default, the management VLAn is on VLAN #1. However we
could change the management VLAN # bby first shutting down
VLAN 1 and assigning another VLAN # an IP address. Then, we
must also set an IP default gateway with the same subnet as
the assigned IP on our new VLAN#. In that way we now have
changed the management VLAn to anotther VLAN#
Hope that helps.
On Thu, 3 Jul 2003 13:33:34 -0400
"Jonathan V Hays" <jhays@jtan.com> wrote:
> Here is the output from a "show run" on a Catalyst 3550.
>
> !
> interface VLAN1
> no ip address
> no ip directed-broadcast
> no ip route-cache
> shutdown
> !
> !
>
>
> > -----Original Message-----
> > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On
> > Behalf Of John Matijevic
> > Sent: Thursday, July 03, 2003 12:49 PM
> > To: SHARMA,MOHIT (HP-Germany,ex1);
> ccielab@groupstudy.com
> > Subject: Re: Switchin Basics
> >
> >
> > Hi Mohit,
> > You cannot shutdown the management vlan, vlan1, try
> it. I
> > would not spend
> > to much time on this just realize that vlan1 is the
> default
> > management vlan.
> > If there is something more that the question is asking
> please
> > post it here.
> > Sincerely,
> > Matijevic
> > ----- Original Message -----
> > From: "SHARMA,MOHIT (HP-Germany,ex1)"
> <mohit.sharma@hp.com>
> > To: "'John Matijevic'" <matijevi@bellsouth.net>;
> > <ccielab@groupstudy.com>
> > Sent: Thursday, July 03, 2003 12:09 PM
> > Subject: RE: Switchin Basics
> >
> >
> > > Hi John,
> > >
> > > thanx for the followup, but what would then be
> exactly "the
> > management
> > > vlan"", If vlan 1 is shutdown and as Jonathan said
> there
> > could be a number
> > > of SVI's. How would the switch decide, which one to
> consider the
> > management
> > > vlan?Or is it like the default vlan the default
> management
> > vlan is always
> > > "1" ??
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: John Matijevic [mailto:matijevi@bellsouth.net]
> > > Sent: Thursday, July 03, 2003 5:58 PM
> > > To: Jonathan V Hays; 'SHARMA,MOHIT (HP-Germany,ex1)';
> > >
> > > Subject: Re: Switchin Basics
> > >
> > >
> > > Hello Team,
> > > I politely disagree with Jonathan in the following:
> > > > However, on the Catalyst 3550 you can have multiple
>
> > "management" VLANs.
> > >
> > > my answer is:
> > > Only one management VLAN can be administratively
> active at a time.
> > >
> > > also,
> > > You cant change the default vlan 1.
> > >
> > > As a followup note:
> > > Management interfaces and vlans is documented in the
> 3550
> > admin guide.
> > The
> > > management interface communicates with the switch ip
> address. The ip
> > address
> > > is associated with the management vlan. You can
> only have
> > one management
> > > vlan at a time. The management vlan is the vlan used
> to
> > manage the switch,
> > > so when you add a vlan and assign an ip address, that
> vlan
> > communicates
> > with
> > > the management vlan.
> > > Hopefully this helps clarify,
> > > Sincerely,
> > > Matijevic
> > >
> > > ----- Original Message -----
> > > From: "Jonathan V Hays" <jhays@jtan.com>
> > > To: "'SHARMA,MOHIT (HP-Germany,ex1)'"
> <mohit.sharma@hp.com>;
> > > <ccielab@groupstudy.com>
> > > Sent: Thursday, July 03, 2003 10:17 AM
> > > Subject: RE: Switchin Basics
> > >
> > >
> > > > See below.
> > > >
> > > > > -----Original Message-----
> > > > > From: nobody@groupstudy.com
> [mailto:nobody@groupstudy.com] On
> > > > > Behalf Of SHARMA,MOHIT (HP-Germany,ex1)
> > > > > Sent: Thursday, July 03, 2003 7:22 AM
> > > > > To: 'ccielab@groupstudy.com'
> > > > > Subject: RE: Switchin Basics
> > > > >
> > > > >
> > > > > Hi all,
> > > > >
> > > > > I know this may sound like a really stupid
> question from a
> > > > > guy preparing for
> > > > > the esteemed exam, but could someone please take
> out some
> > > > > time to enmlighten
> > > > > me. I really need to get this basics clear.
> > > > >
> > > > > Thanks for your understanding and cooperation.
> > > > >
> > > > > Smiles,
> > > > >
> > > > > Mohit.
> > > > > -----Original Message-----
> > > > > From: SHARMA,MOHIT (HP-Germany,ex1)
> [mailto:mohit.sharma@hp.com]
> > > > > Sent: Thursday, July 03, 2003 12:54 AM
> > > > > To: 'ccielab@groupstudy.com'
> > > > > Subject: Switchin Basics
> > > > >
> > > > >
> > > > > Hi All,
> > > > >
> > > > > This may sound like one of the basic questions
> for switching,
> > > > > however I just
> > > > > tried these on my newly acquired 3550's and am
> really confused.
> > > > >
> > > > > 1.> If asked to change the default VLAN, how does
> it work? I
> > > > > have tried
> > > > > using the default vlan <x> command, but when I do
> sh vlan it
> > > > > always gives me
> > > > > the default vlan as 1. First I thought that after
>
> > giving this command
> > > > > changing the names would do the trick but it
> still allocates
> > > > > the unused
> > > > > ports to VLAN 1 :(
> > > > >
> > > >
> > > > ****
> > > > The default VLAN on an unconfigured Cisco switch is
> VLAN
> > 1. I don't
> > > > think this can be changed. For an unconfigured
> switch, it
> > simply means
> > > > that by default all ports are a member of VLAN 1. I
> suppose the
> > > > programmers could have alternatively assigned all
> ports
> > to no VLAN at
> > > > all, which would have forced the sysadmin to assign
> a
> > VLAN to a port
> > > > before using the switch. With a default of VLAN 1
> on all
> > ports, you can
> > > > turn on the switch and immediately plug in ethernet
>
> > cables and start
> > > > using the switch.
> > > >
> > > > I think your lab scenario is really asking you to
> assign ports to
> > > > different VLANs. Or maybe to assign a new
> management VLAN
> > by creating a
> > > > new switched virtual interface (SVI). See below.
> > > > ****
> > > >
> > > >
> > > > > 2.> What does management interface mean. If I
> have a
> > number of VLAN
> > > > > interfaces with IP address configured, how does
> the switch
> > > > > decide, which one
> > > > > is the management interface???IS it the default
> VLAN
> > again at play???
> > > >
> > > >
> > > > ****
> > > > Older IOS-type switches (e.g., 2900/3550XL, 2950,
> etc.)
> > only allowed one
> > > > "management" VLAN. For example, to shut down VLAN 1
> as
> > the management
> > > > VLAN on a 2900/3500 XL switch you used the
> "management" command.
> > > >
> > > > However, on the Catalyst 3550 you can have multiple
>
> > "management" VLANs.
> > > > (Cisco does not use the term "management" very
> often in the 3550
> > > > configuration guide.) To do this, you just create
> anther
> > SVI with the
> > > > "int vlan XXX" command. To disable VLAN 1 as a
> "management" VLAN:
> > > >
> > > > int vlan 1
> > > > shutdown
> > > >
> > > >
> >
>
http://www.cisco.com/univercd/cc/td/doc/product/lan/c3550/1211
> > 3ea1/3550s
> > > > cg/swint.htm#1026951
> > > >
> > > > <quote>
> > > > By default, an SVI is created for the default VLAN
> (VLAN
> > 1) to permit
> > > > remote switch administration. Additional SVIs must
> be explicitly
> > > > configured. In Layer 2 mode, SVIs provide IP host
> > connectivity only to
> > > > the system; in Layer 3 mode, you can configure
> routing
> > across SVIs.
> > > > </quote>
> > > >
> > > > HTH
> > > >
> > > > Jonathan
> > > >
> > > > ****
> > > >
> > > >
> > > > >
> > > > > Thanks as always for showing me the light :)
> > > > >
> > > > > Smiles,
> > > > >
> > > > > Mohit.
> > > > >
> > > > >
> > > > >
>
This archive was generated by hypermail 2.1.4 : Wed Aug 06 2003 - 06:52:21 GMT-3