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September 13th, 2012 13:00

Switch Force10 S4810 - TRILL or VLT

Hello

I have 3 Force10 S4810 and I want to interconect them in a ring topology:

   Switch1----------------Switch2

     |                                    |

     |______Switch3______|

But I don´t want any link blocked by Spanning-Tree. I read that Force10 has support for TRILL or VLT. Which is the best to achieve this purpose? All links enabled and being used.

What configurations should I place to make this work?

I really apreciate your help.

Best regards

2 Posts

September 24th, 2012 05:00

Anyone?

5 Practitioner

 • 

274.2K Posts

September 24th, 2012 07:00

I apologize I am not real familiar with the Force10 products, I would suggest contact the Force10 support group directly for an accurate and prompt answer.

www.force10networks.com/.../SupportMain.aspx

Thanks.

18 Posts

September 30th, 2012 13:00

VLT should serve the purpose.

it is very similar to Cisco vPC in operation. I have implemented it on a couple of Force10 rollouts, did not face any issues.

With VLT, when you have a downstream switches connecting to two upstream switches which are a separate logical backplanes (not stacked), the downstream switch will view them as a single logical chassis. thus, LAG or aggregate ports can be split between the two upstream switches without a problem.

for any switches upstream to the force10 VLT peers, they will continue to view these as separate switches.

As far as your requirement goes, VLT would give you this active active redundancy as long as you are using LAGs across the two upstream switches from the downstream switch.

do you have the details on how you would configure and setup VLT?

4 Posts

October 3rd, 2012 01:00

Yes Richter. VLT is designed to serve that purpose only..

Configuration is as follows:

Switch1:

1) Form a static portchannel between switch one and two and an LACP portchannel between Sw1 And 3.

FTOS#sh run int port-channel 
!
interface Port-channel 55 << no ip address
portmode hybrid
switchport
vlt-peer-lag port-channel 66 <<< 66 is the port channel id of portchannel configured in Switch2
no shutdown
!
interface Port-channel 128 << no ip address
channel-member TenGigabitEthernet 0/8-11
no shutdown
FTOS#
2) Configure a VLT domain
FTOS#sh run vlt
!
vlt domain 1000
peer-link port-channel 128 << back-up destination 10.16.130.51
primary-priority 1
system-mac mac-address 12:12:12:12:12:12
unit-id 0
 
 
2#Switch 2 - Configuration 
FTOS#sh run int po
!
interface Port-channel 66
no ip address
portmode hybrid
switchport
vlt-peer-lag port-channel 55 <<<55 is the Po id of sw1
no shutdown
!
interface Port-channel 128
no ip address
channel-member TenGigabitEthernet 0/84-87
no shutdown
FTOS#sh run vlt
!
vlt domain 1000
peer-link port-channel 128
back-up destination 10.16.130.185
system-mac mac-address 12:12:12:12:12:12 << unit-id 1 
 
 
3# Switch 3 - configuration
 
interface Port-channel 33      <<< LACP which consists ports terminating from both sw1 and sw2
no ip address
portmode hybrid
switchport
no shutdown
 
hope it helps,
Kmrsn.

18 Posts

November 3rd, 2012 16:00

Hi Kmrsn

Apologies, it took me this long to respond, but i just wanted to thank you for your input here.

This shall greatly aid me in the future as well. Once again, thank you.

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