March 2013 Dell EqualLogic Configuration Guide v14.1 9-97
Table 39 Horizontal Stack with Vertical LAG
Connecting M1000e to Stacked external switch infrastructure
Advantages Concerns
Support configuring LAGs between M-series I/O modules
across both external switches in stack (cross-switch LAG)
• SAN Array-to-array traffic is isolated outside of the M1000e
enclosures
• Supports ability to scale arrays
• Supports ability to scale host.
• Supports sharing SAN with non-M1000e servers.
• External stacked switches can be expanded by adding
additional switches to stack as more ports are needed.
•
Can support different vendor switches in the external tier
Must bring external switch
stack down to apply switch
firmware updates.
• Must bring internal switch
stack down to apply switch
firmware updates.
Other notes
If available, use 10Gb links between M-series I/O modules and external switches
• Additional M1000e enclosures are added in similar fashion to diagram above.
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