Dell PowerStore 1200T EMC PowerStore Networking Guide for PowerStore T Models - Page 47

Switch requirements for deployments with storage services

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10 Switch requirements for deployments with storage services This chapter contains the following information. Topics: • Top-of-Rack (ToR) switch connectivity options and requirements • Top-of-Rack (ToR) switch to ToR switch (L2) connectivity options Top-of-Rack (ToR) switch connectivity options and requirements In addition to the Management switch configured during your initial deployment of the PowerStore T model appliance, you must add two ToR switches to route the storage services traffic. Top-of-Rack (ToR) switch to ToR switch (L2) connectivity options Use one of the following options to connect the two ToR switches. Table 19. Connectivity options for ToR switches ToR to ToR connectivity Description Direct interconnect using Multi-chassis Link Aggregation (MC-LAG) Dell highly recommends using MC-LAG for connectivity between the ToR switches. When the ToR switches are interconnected with MC-LAG the two ports used on the PowerStore appliance 4-port card, or I/O module (system bond) can be configured in an active/active state. Direct interconnect not using MC-LAG If MC-LAG is not used to interconnect the ToR switches, you can create a port channel between the ToR switches. When the ToR switches are connected using a Port Channel the two ports used on the PowerStore appliance 4-port card, or I/O module (system bond) reverts into an active/ passive state. No direct interconnect between the switches If the ToR switches cannot be interconnected then use highly reliable Layer 2 (L2) uplinks. When using highly reliable L2 uplinks, the two ports used on the PowerStore appliance 4-port card, or I/O module (system bond) reverts into an active/passive state. NOTE: For more information about PowerStore system bonds refer to the Dell EMC PowerStore: Clustering and High Availability white paper. Switch requirements for deployments with storage services 47

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Switch requirements for deployments with
storage services
This chapter contains the following information.
Topics:
•
Top-of-Rack (ToR) switch connectivity options and requirements
•
Top-of-Rack (ToR) switch to ToR switch (L2) connectivity options
Top-of-Rack (ToR) switch connectivity options and
requirements
In addition to the Management switch configured during your initial deployment of the PowerStore T model appliance, you must
add two ToR switches to route the storage services traffic.
Top-of-Rack (ToR) switch to ToR switch (L2)
connectivity options
Use one of the following options to connect the two ToR switches.
Table 19. Connectivity options for ToR switches
ToR to ToR connectivity
Description
Direct interconnect using
Multi-chassis Link Aggregation
(MC-LAG)
Dell highly recommends using MC-LAG for connectivity between the ToR switches.
When the ToR switches are interconnected with MC-LAG the two ports used on the
PowerStore appliance 4-port card, or I/O module (system bond) can be configured in an
active/active state.
Direct interconnect not using
MC-LAG
If MC-LAG is not used to interconnect the ToR switches, you can create a port channel
between the ToR switches.
When the ToR switches are connected using a Port Channel the two ports used on the
PowerStore appliance 4-port card, or I/O module (system bond) reverts into an active/
passive state.
No direct interconnect
between the switches
If the ToR switches cannot be interconnected then use highly reliable Layer 2 (L2) uplinks.
When using highly reliable L2 uplinks, the two ports used on the PowerStore appliance 4-port
card, or I/O module (system bond) reverts into an active/passive state.
NOTE:
For more information about PowerStore system bonds refer to the
Dell EMC PowerStore: Clustering and High
Availability
white paper.
10
Switch requirements for deployments with storage services
47