Configuration MDS MDS ISL and behavior

Hello

I've been Googling for days and really learn anywhere with this, so I hope someone here has some knowledge that I can draw!

The situation:

We have a new SAN and MDS (9148) installed and just about to start the migration of servers to virtual or physical machines to him.

One needs to get a copy of SAN of the old SAN block data to the new San to allow the migration of some machines. Once this is done, these physical machines will then be repatched the new MDS and zoned accordingly.

We can not connect the old SAN for the new MDS (for several reasons), and can connect the new SAN for the old MDS (for several reasons).

It is a 24/7 business. Downtime has been negotiated on a basis to derisk the migration and application, it will be held over a period of 8 weeks.

My conclusion is that we need an ISL between the MDS. I found a few guides on Google and YouTube for this but miss me something because is not quite make sense yet.

My questions:

  • Is setting the mode of the interface to 'E' on each side enough to connect an ISL? Or other measures are necessary?
  • I saw something saying the ISL that VSAN (s) are allowed on the ISL - but do not see how to do it. Clues would be appreciated! FYI, MDS1 old and new MDS1 both have a single VSAN (10), and MDS2 both old and new MDS2 have a single VSAN (20). There is no inter VSAN routing.
  • I saw the reference to "behavior of fusion Zone. Can anyone confirm that this is please? The old MDS have their sets of areas that are suitable for devices connected to them. The new MDS have their sets of areas for the devices they are connected. Creation of an ISL will cause to merge into a single set of areas? If so, is that what I should wait no downtime?
  • Finally, everything would change if the "old MDS" were actually Nexus 5K (-5548UP which is what is on the site of DR)?

I'm happy if you tell me the CLI or VIEW-based methods. I should add here that I can do the "basics" (alias, zoning, zonesets, etc.) in MDS, but this isn't something I've met before. There is no devices MDS test to test with, and at this point I am writing at the request of modification rather trying to run on the fly.

I've attached a ' great plan' in case this is useful!

Thanks in advance.

Andrew

Hi André,.

I don't see where anyone has answered it.

  • Is setting the mode of the interface to 'E' on each side enough to connect an ISL? Or other measures are necessary?

If you connect two MDS all ports that are AUTO (default) mode, and then they connect as an ISL.   Setting the mode of E is a good idea too.

  • I saw something saying the ISL that VSAN (s) are allowed on the ISL - but do not see how to do it. Clues would be appreciated! FYI, MDS1 old and new MDS1 both have a single VSAN (10), and MDS2 both old and new MDS2 have a single VSAN (20). There is no inter VSAN routing.

By default, if trunk mode is enabled, then all the vsan configured which is on both switches will be trunked. If there are only 10 of the VSAN on the switches, it will be to resources shared, providing that there is no failure of the merger.  FCDOMAINs must be unique on each switch by VSAN.

  • I saw the reference to "behavior of fusion Zone. Can anyone confirm that this is please? The old MDS have their sets of areas that are suitable for devices connected to them. The new MDS have their sets of areas for the devices they are connected. Creation of an ISL will cause to merge into a single set of areas? If so, is that what I should wait no downtime?

Look at this reference, it has information:

Behavior of fusion zone when two MDS switches have names different set of active areas are connected

In addition, you can use DCNM to a Zone merge analysis before doing this.

In this document, see "analyze a Zone merge":

http://www.Cisco.com/c/en/us/TD/docs/switches/Datacenter/MDS9000/SW/6_x/configuration/guides/fabric/DCNM-SAN_published/fm_fabric/zone.PDF

  • Finally, everything would change if the "old MDS" were actually Nexus 5K (-5548UP which is what is on the site of DR)?

N °

Tags: Cisco DataCenter

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