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

Mon Jan 18 10:59:03 EST 2010

Hi Brad 

Exactly my thinking about the announcement of the network on both sites.
But the problem is, I can’t configure eompls on a tagged interface.
If  I put an interface into a vrf  instance the switch won’t accept the eompls statements of the ip addresses.
Is this because that eompls is hard coded to use the global routing table and is there by not able to handle interfaces that are in vpn routing table.
Here is my error.:
aasnxc6-1(config-if)#xconnect 192.160.101.32 3300 encapsulation mpls 
Incompatible with ip address command on Vl3300 - command rejected.

The interface belong to vpn and the ip address in the xconnect statement is the loopback address off the peer vss-router.
I have tried to use addresses that are in the vpn routing table, but I get the same error.

/Arne

________________________________________
Fra: Brad Hedlund [brhedlun at cisco.com]
Sendt: 18. januar 2010 03:47
Til: Arne Larsen / Region Nordjylland
Cc: cisco-nsp at puck.nether.net
Emne: Re: SV: [c-nsp] how to connect vss-setup via mpls core

Arne,

The VLANs extended between Data Centers can be configured with Layer 3 interfaces and services no different than any other VLAN.
SVI's can be configured, HSRP groups can be formed (within and between DCs), and the IP network for the VLANs can be announced by BGP (or any other protocol).
As you can imagine, thinking about how flows enter and leave the Data Centers can get quite interesting :-)

Cheers,
Brad

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

On Jan 17, 2010, at 2:25 PM, Arne Larsen / Region Nordjylland wrote:

> Hi Brad.
>
> Thanks for your answers, the layer2 connection as you all mentioned I’m pretty sure about.
> And yes we are using mpls software.
> But I still can’t find out about the layer3 interfaces.
> The Vlans that distributed via eompls between the two sites can the have layer3 interfaces.
> Is it possible to make  Vlan 2 that is connected via eompls between the 2 sites, and further more setup an ip interface vlan2 on both sites using vrrp or hsrp to control the active standby function an the announcement of the network via bgp to the core network.
>
> /Arne
>
> ________________________________________
> Fra: Brad Hedlund [brhedlun at cisco.com]
> Sendt: 17. januar 2010 18:47
> Til: Arne Larsen / Region Nordjylland
> Cc: cisco-nsp at puck.nether.net
> Emne: Re: [c-nsp] how to connect vss-setup via mpls core
>
> 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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