From: henro (ugwuadu@gmail.com)
Date: Wed Dec 12 2007 - 03:39:05 ART
Hello All,
Thanks a million for your response, I do not really want to use trunk
between the two switches. I considered bridging but not really what I
wanted. I would rather provide a 2950 at the other end and use trunk
to extend the vlan. the whole essence is to avoid STP loop issues.
Problem resolved. Thanks
Henro
On Dec 12, 2007 5:57 AM, <subodh.rawat@wipro.com> wrote:
>
> I amd assuming Henro is not doing any sort of Routing on switches. 10.10.10.1 and 10.10.10.2 are host IP addresses connected to switch 1 and 2. So configuarion suggested by you seems unnecessary.
>
> Enabling same VLAN on all ports (Sw1 host port, sw1 (f0/1), sw2 (f0/1), sw2 host port) will work just fine and will not impose any overheads (dot1q or ISL) on frames traveling switch 1 to 2.
>
> Henro, correct me if I misunderstood your requirement.
>
> However, if switch is routing and 10.10.10.1 and 10.10.10.2 are IP addresses on switch 1 and 2 for VLAN-A then you are right.
>
> Thanks
> Subodh
>
>
> -----Original Message-----
> From: Carlos Trujillo Jimenez [mailto:nergal888@hotmail.com]
> Sent: Wednesday, December 12, 2007 5:19 AM
> To: kim.teu@gmail.com; Subodh Singh Rawat (WT01 - TELECOM SERVICE PROVIDER)
> Cc: ugwuadu@gmail.com; ccielab@groupstudy.com
> Subject: Re: VLAN over switch routed port (WAN)
>
>
> yeah, but if he enable fas0/1 of both switches as access ports belonging both to the same vlan, he LOOSES the network 10.10.10.0/30 between both switches,and if those switchports are doing routing, with expanding the vlan YOU ALSO LOOSE THE ROUTING SUBNET PRESENT BETWEEN BOTH SWITCHES.
>
> I have an alternative solution.
>
> What about enabling IRB between both switches, thus expanding VLAN A between both switches, and also, using the already present 10.10.10.0/30 network?
> THUS NOT LOOSING THE ROUTING BETWEEN BOTH SWITCHES.
>
>
> First of all make sure if both switches support IRB.
>
> FOR SW1
>
> int vlanX (VLAN A)
> bridge-group 1
>
> int fas 0/1
> bridge-group 1
>
> int bvi 1
> ip address 10.10.10.1 255.255.255.252
> ip address x.x.x.x x.x.x.x secondary (VLAN A SUBNET)
>
> FOR SW2
>
> int vlanX (VLAN A)
> bridge-group 1
>
> int fas 0/1
> bridge-group 1
>
> int bvi 1
> ip address 10.10.10.2 255.255.255.252
> ip address x.x.x.x x.x.x.x secondary (VLAN A SUBNET)
>
> with this configuration you have EXTENTED VLAN A SUBNET without loosing the
> routing subnet between both switches.
>
>
>
>
> >From: "Kim teu" <kim.teu@gmail.com>
> >X-OriginalArrivalTime: 10 Dec 2007 21:55:47.0584 (UTC)
> >FILETIME=[6BCD9000:01C83B77]
> >
> >Yup. Just make fa0/1 of both switches in VLAN-A would not introduce
> >addition
> >trunking encapsulation overhead.
> >
> >On 12/10/07, subodh.rawat@wipro.com <subodh.rawat@wipro.com> wrote:
> > >
> > > Try to make f0/1 of Switch 1&2 as access port with same vlan, VLAN-A.
> > >
> > > Subodh
> > >
> > > -----Original Message-----
> > > From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> > > henro
> > > Sent: Monday, December 10, 2007 1:29 PM
> > > To: ccielab@groupstudy.com
> > > Subject: VLAN over switch routed port (WAN)
> > >
> > > Hi All,
> > >
> > > I have the following scenario
> > >
> > >
> > > VLAN-A
> > > =====SW1-f0/1==============================SW2-f0/1==========VLAN-A
> > > 10.10.10.1/30
> > > 10.10.10.2/30
> > >
> > > How can I extend VLAN-A across the WAN link between SW1 and SW2 as shown
> > > above without introducing overhead.
> > >
> > > Thank you.
> > >
> > > Henro
> > >
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