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Dell EMC Metro node 7.1 Administrator Guide

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port-groups context

The port groups (or communication paths) assigned to each connectivity role (back-end, front-end, local-com or wan-com) are contained in the port-groups sub-context of each role.

Ports named WC-00 on each cluster are collectively referred to as ip-port-group-0. There are two ip-port-group-0s, one in each cluster. The ip-port-group-0s on each cluster form one communication channel between the clusters.

Ports named WC-01 on each cluster are collectively referred to as ip-port-group-1. There are two port-group-1s, one in each cluster. The ip-port-group-1s on each cluster form a second communication channel between the clusters.

In the following example, a metro node Metro configuration has two back-end fc-port-groups in each cluster: 

VPlexcli:/clusters/cluster-1/connectivity/back-end> cd port-groups/
VPlexcli:/clusters/cluster-1/connectivity/back-end/port-groups> ll
Name             Enabled      Member Port
---------------  -----------  -----------
fc-port-group-2  all-enabled  IO-02
fc-port-group-3  all-enabled  IO-03

If multiple clusters exist, a local port-group has an analogous port-group of the same name at the remote cluster.

A port-group contains all the ports across all directors that share these characteristics:

  • serve the same role
  • are the same type
  • have the same port number
  • are on a slic that is inserted into the same position on the respective directors

Each communication role contains a list of port-groups. Use the ll command to display a summary of the role's port-groups: 

VPlexcli:/clusters/cluster-1/connectivity/wan-com/port-groups> ll
Name             Enabled      Member Port
---------------  -----------  -----------
ip-port-group-0  all-enabled  WC-00
ip-port-group-1  all-enabled  WC-01

The Enabled column shows the enabled property of each port-group:

  • all-enabled - All ports in the port-group are enabled.
  • all-disabled - All ports in the port-group are disabled.
  • inconsistent - All member-ports do not have the same enabled status.

The Member Port column lists the name of the port that belongs to this port-group. If the port name is not the same across all directors, each unique name will be listed.

Use the set command on the enabled property to modify the enabled status of all reachable ports in the port-group:

  • set enabled all-enabled: enables all reachable ports in this port-group
  • set enabled all-disabled: disables all reachable ports in this port-group

port-group subcontexts

Specific port-group sub-contexts exist for each port-type: IP (ethernet) and FC (Fibre Channel), if the corresponding ports exist. The sub-contexts associated with a particular port-group depends on both the role the port-group serves and the type of port contained in the port group. A port-group is composed using a port-type prefix and a port-number suffix. Port-type prefixes are:

  • FC - Fibre Channel port
  • IP - Ethernet port

All port-groups contain a member-ports context that provides information about the member-port from each director.

IP port-groups contain:

  • option-set context contains configuration options common to the member ports.
  • subnet context contains configuration options for IP networking. Different roles have different networking needs, and thus their subnet contexts contain different properties. These subnets are descried under their associated role.
  • enabled - Summarizes the enabled status of the individual member ports.

Member ports

All properties under the member-ports context are read-only.

All port-groups include a member-ports context that lists the port from each director in the port group. Port-groups will remember member-ports from directors that become unreachable. If a director becomes unreachable, the port-group will display the unreachable ports, but indicate that they are unreachable. Remembering unreachable ports is only possible if the current instance of the CLI learned about the port before the director became unreachable. If a director is unreachable when the CLI starts, its ports will not appear in any port-group.

A long listing of the member-ports context provides a summary of the port-group's member ports: 

VPlexcli:/clusters/cluster-1/connectivity/wan-com/port-groups/ip-port-group-0/member-ports> ll
Director        Port   Enabled  Address
--------------  -----  -------  --------------
director-1-1-A  WC-00  enabled  192.168.10.35|
director-1-1-B  WC-00  enabled  192.168.10.36|
The member-ports context contains a sub-context for each director that contributes a port to the port-group: 
VPlexcli:/clusters/cluster-1/connectivity/wan-com/port-groups/ip-port-group-0/member-ports/director-1-1-A> ll
Name       Value
---------  --------------
address    192.168.10.35|
director   director-1-1-A
enabled    enabled
port-name  WC-00
These sub-contexts provide limited details about that director's port. You can find full details under the director's /clusters/*/directors/*/ports context.
NOTE:The address field is not port-type specific, and will display the address as appropriate for the port type.

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