[c-nsp] how to connect vss-setup via mpls core

[Brad Hedlund]

Arne,

Since IOS version 12.2(33)SXI2 we now support MPLS in a VSS configuration.
This means you can now connect your VSS pair in Data Center 1 to the VSS pair in Data Center 2 with a port channel using EoMPLS.  Best practice would be to configure BPDU filtering on that port channel so you can keep your STP domains isolated between the two Data Centers.  This provides a loop free L2 topology between two DCs over almost any distance.

6500---------EoMPLS---------6500   
vss      (port channel)     vss
6500---------EoMPLS---------6500

Cheers,
Brad
                      
--
Brad Hedlund, CCIE #5530
Consulting Systems Engineer, Data Center
bhedlund at cisco.com
http://www.internetworkexpert.org




On Jan 17, 2010, at 1:40 AM, Arne Larsen / Region Nordjylland wrote:

> 
> Hi Arie.
> 
> Sorry for not explaining the setup in detail. But anyway this is the case.
> 
> layer2 sw  ---6500			6500 --- layer2 sw
> |        > vss1   - (MPLS-Core) -  vss2 < 
> layer2 sw ----6500 			6500 --  layer2 sw
> 
> 
> Each site has a full vss environment with it's own local layer 2 switches.
> What I'll like to able to do is, setup a few Vlan's on both sites that can host servers on the same broadcast domain. 
> Further more I'll like to able to announce the layer3 connection on the Vlan via bgp to our costumers. 
> How is it possible to enable a layer3 interface on the Vlan in each local site and run eompls or vpls between the 2 sites on layer2 .
> 
> Arne
> 
> -----Oprindelig meddelelse-----
> Fra: Arie Vayner (avayner) [mailto:avayner at cisco.com] 
> Sendt: 16. januar 2010 21:08
> Til: Arne Larsen / Region Nordjylland; cisco-nsp at puck.nether.net
> Emne: RE: [c-nsp] how to connect vss-setup via mpls core
> 
> Arne,
> 
> Why would you want to do that in such a way?
> In order to get the real benefit of VSS you would need all the access switches connected to both VSS nodes, which would require links from DC1 to DC2 per each access switch...
> The same would apply to upstream Layer 3 connectivity...
> 
> If you do not plan to have this kind of a full mesh, then why would you want to use VSS in the first place.
> 
> With regards to layer 2 interconnect between DCs, this is a very common design nowadays, and MPLS is used in many solutions.
> I suggest you take a look at this link:
> http://www.cisco.com/en/US/netsol/ns975/index.html (take a look at the whitepaper).
> 
> Also, there is a very good Cisco Press book about this whole subject:
> http://www.ciscopress.com/bookstore/product.asp?isbn=9781587059926
> 
> In the coming Networkers event in Barcelona there would be a few sessions about this, and a number of people in Meet the Engineer venue which can help with this subject.
> 
> Arie
> 
> 
> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net
> [mailto:cisco-nsp-bounces at puck.nether.net] On Behalf Of Arne Larsen / Region Nordjylland
> Sent: Saturday, January 16, 2010 17:31
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] how to connect vss-setup via mpls core
> 
> Hi all.
> 
> I need an advice.
> Is there a way to connect 2 vss-setup's with out using direct fibers on layer 2 I would like the to sites to connect via our mpls cloud, so that vlan's configured on the boxes can reach each other on layer2 and be able top announce the layer3 network via bgp on both sites.
> If vlan 200 is configured on both sites, is it possible to use eompls to connect these 2, and make them active/stanby to each other on layer3 using vrrp or hsrp.
> I been searching the cisco web for doc. But all I can find is only useable on layer2.
> 
> /Arne
> 
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