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Author Topic: SMLT topology  (Read 3757 times)

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Offline nurhidayat

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SMLT topology
« on: June 29, 2014, 09:43:52 PM »
Dear all,
We want to implement SMLT topology. Is the topology attached can be use with VSP 7024GT as core switch ?
Can SMLT implemented with other brand core switch like HP or Cisco while other switches is not replaced ?
Thank you.


Offline pat2012

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Re: SMLT topology
« Reply #1 on: July 01, 2014, 08:18:35 PM »
You should be able to implement SMLT with the configuration in the diagram with no problem. The edge switches would be configured with MLTs to the core.  As for using another brand switch at the core....  Remember, MLT and SMLT are proprietary protocols.  I'm not sure if MLT would work with another brand.  In that case you would have to use something like LACP from the edge switches to the core.

SMLT is a superior protocol anyway (just kidding), so stick with the VSP 7024.   ;D

Offline Telair

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Re: SMLT topology
« Reply #2 on: July 02, 2014, 11:54:35 AM »
If your using Cisco, then EtherChannel is MLT/SMLT compatible.  But otherwise you have to look at using LACP for your connections since MLT/SMLT is an Avaya protocol.
« Last Edit: July 03, 2014, 01:26:28 AM by Telair »

Offline nurhidayat

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Re: SMLT topology
« Reply #3 on: July 02, 2014, 11:01:57 PM »
If cisco as core switch, can It do something like SMLT ? what is SMLT name in cisco?
and what about HP switch too ? Does it support SMLT/MLT  ?

Offline Telair

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Re: SMLT topology
« Reply #4 on: July 03, 2014, 01:30:26 AM »
As far as I know, only Cisco supports EtherChannel and I am not familiar with it much beyond that to know it's limitations.  Any other switch maker you probably have to look at using LACP to build LAG's since MLT/SMLT is an Avaya only protocol.

Offline Dominik

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Re: SMLT topology
« Reply #5 on: July 03, 2014, 01:46:13 AM »
Waht do you want to do with SMLT ?

Basically SMLT is a multichassis Link aggregation. So if you want to connect a device to an SMLT Cluster it
only needs to support link aggregation. You can use static link aggregation or LACP.
As mentioned from Telair the static Link Aggregations are not an real standrd , so every vendor is making its
own proprietary static link aggregatiion like with Cisco etherchannel, Avaya MLT and so on.
Most of these will work together but if you want a garantee that it will work you have to use
the official 802.3ad LACP standard.

If you build it like it is shown on your network diagramm , you have a redundant switchcluster in your core and can connect via Link aggregation switches to it. In general I had no problems with 3rd Party vendors like Cisco , HP . In fact the 3rd Party switches have only to support link aggregation you can connect them
to the switchcluster , think of it that way for the other devices it is like as if they where connected to one big switch.
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Offline nurhidayat

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Re: SMLT topology
« Reply #6 on: July 03, 2014, 03:36:07 AM »
Thank you Dominik.
We want to replace our core switch. We want to have a redundant switchcluster in the core like you said. We want to know if other brand have SMLT-like technology and want to make sure it will work with existing edge switches.

Offline Dominik

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Re: SMLT topology
« Reply #7 on: July 03, 2014, 04:09:51 AM »
Of course their are other vendors that also have a multi chassis link aggregation in their portfolio.
Cisco has VSS and VPC, Juniper VirtualChassis , Brocade...

All these comes with vendor specific limitations. Before you choose wich solution you would like to implement in your network I would recommand to do a lab test.


PS
SMLT was the first multi chassis link aggreagtion on the market.
« Last Edit: July 03, 2014, 04:11:41 AM by Dominik »
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Offline nurhidayat

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Re: SMLT topology
« Reply #8 on: July 03, 2014, 09:35:39 PM »
Personally, we prefer avaya nortel, because we already familiar with nortel switches especially JDM is very helpful in our IT "superman" job. But, it is an auction and we cannot make it just for one brand.

So, all vendor have their own link aggregation implementation, and in the aanwijzing later we must explain other brand must be able to use link aggregation to avaya/nortel edge switches.

Thank you all.