justin_mc
1 Nickel

DD2500 10Gb Aggregation

Hi all,

I will be installing a DD2500 with standard on-board hardware and no I/O modules, but have read in the admin guide that the on-board 10Gb interfaces do not support link aggregation.

What is the recommendation around this if aggregation is a requirement? Ideally teaming the 10Gb interfaces would be preferred due to the speed benefits over the 4x1Gb interfaces. Otherwise, can the 10Gb interfaces be used in a virtual group for failover instead on the DD2500?

Thanks in advance

Justin

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12 Replies
jbrooksuk
2 Iron

Re: DD2500 10Gb Aggregation

Hi Justin, I actually didn't know it wasn't possible to aggregate the onboard 10000BaseT ports of a DD2500, I'll look into that in a moment, however, what is the intended purpose for these ports in your environment?

Are you planning to use them for DDBoost/OST to ingest data?

If so, you can set an IP on each of the interfaces as normal interfaces and then place them into an ifgroup.

That will essentially hand the interface aggregation/load balancing and resilience to DDBoost with no requirement to set anything special at your network switch, all the aggregation will be handled by DDBoost in software.

The 2x interfaces do not need to be exclusively for DDBoost and that ifgroup, they are essentially members of it only and can handle other activities, like replication or management.

Doing it this way is actually the preferred option anyway, so may be a good choice for you.

Regards, Jonathan

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justin_mc
1 Nickel

Re: DD2500 10Gb Aggregation

Thanks for the feedback. The interface will be used for CIFS, so it will be teamed with another interface. There's no DDBoost being used in this environment.

Thanks again

Justin

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halukm
1 Copper

Re: DD2500 10Gb Aggregation

Hi,

You can aggregate both 10gbit interfaces with vtl0. It works perfectly.

0 Kudos

Re: Re: DD2500 10Gb Aggregation

The 5.5 DDOS guide says aggregation is not supported on the onboard 10GB interfaces (see pages 59-60):

https://support.emc.com/docu53504_Data-Domain-Operating-System-5.5-Administration-Guide.pdf?language...

How did you make it to work?

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jbrooksuk
2 Iron

Re: DD2500 10Gb Aggregation

I agree, it's not supported and still appears not to be from the tests I've performed on latest DDOS versions.

10GBase-SR (optical) and 10Gbase-CU/10GBase-CR (copper Twinax SFP+) are both options for the DD2500, both these 10Gbe cards support aggregation.

The onboard ports ethMe and ethMf are both 10GBase-T - EMC do not support aggregation on those interfaces.

Regards, Jonathan

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halukm
1 Copper

Re: Re: Re: DD2500 10Gb Aggregation

You can look at the picture as attached.

We completed port channel configuration on our switch and on DD2500 as well.

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jbrooksuk
2 Iron

Re: Re: Re: DD2500 10Gb Aggregation

OK, so I've looked high and low for anything stating that this is now supported or what version of DDOS made it possible to aggregate the 2x onboard 10GBase-T ports (ethMe and ethMf).

From what I can see it is still not officially supported in any version of DDOS.

You are also running 5.5.1.4 which is "directed availability - with restricted availability", not GA code.

It's great that you have it working and you are happy with it but I just wanted to feed back on what I had found on this topic and something to bare in mind if you have any issues with it.

I will continue to investigate.

Regards, Jonathan

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halukm
1 Copper

Re: DD2500 10Gb Aggregation

We used to use that config since 5.4.1.1, and did not face any problem on that config since we bought our DD2500.

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ble1
5 Iridium

Re: Re: Re: DD2500 10Gb Aggregation

The point is - if you encounter error you won't get any support if official statement is that this is not supported.  I would not gamble with data protection