Configure vIST on a DvR Leaf Node Pair

Before you begin

Ensure that the nodes are configured as DvR Leaf nodes, before you configure vIST.

About this task

When you configure vIST on a DvR Leaf node pair, the switch generates an I-SID from the configured cluster ID. This I-SID is unique across the SPB network as long as the cluster ID is unique across the SPB network, for the vIST pair. You can configure only one instance of vIST on the Leaf node pair.

To configure vIST, both nodes must be Leaf nodes. You cannot configure vIST, for example, on a Controller-Leaf node pair.

Also both the nodes must belong to the same DvR domain. vIST configuration over Leaf nodes in different domains is not supported.

Procedure

  1. Enter Global Configuration mode:

    enable

    configure terminal

  2. Configure vIST on the Leaf nodes:

    dvr leaf virtual-ist {<A.B.C.D/X|<A.B.C.D> <A.B.C.D>} peer-ip {A.B.C.D} cluster-id <1–1000>

  3. Optional: Disable vIST on the DvR Leaf node pair.

    no dvr leaf virtual-ist

    Caution

    Caution

    Disabling DvR on a Leaf node in a vIST pair removes all vIST configuration on that node, but not on the pair. The node on which DvR is disabled also loses its membership with the DvR domain and all the dynamic content learned from the Controllers in that domain.

    If DvR is re-enabled on the node, you must manually configure vIST on that node again.

  4. View a summary of vIST configuration on the Leaf nodes.

    show dvr

Example

Configure vIST on DvR Leaf nodes, with IP addresses 51.51.51.1 and 51.51.51.2 respectively:

Switch2:1>enable
Switch2:1#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch2:1(config)#dvr leaf virtual-ist 51.51.51.1 peer-ip 51.51.51.2 cluster-id 255
Switch2:1#show dvr

======================================================================
                          DVR Summary Info           
======================================================================
Domain ID                      : 5
Domain ISID                    : 16678219
Role                           : Leaf
My SYS ID                      : 00:bb:00:00:71:23
Operational State              : Up
GW MAC                         : 00:00:5e:00:01:25
Inband Mgmt Clip IP            : 
Virtual Ist local address      : 51.51.51.1
Virtual Ist local subnet mask  : 255.255.255.0
Virtual Ist peer address       : 51.51.51.2
Virtual Ist cluster-id         : 255
Virtual Ist ISID               : 16677226

Variable definitions

Use the data in the following table to use the dvr leaf virtual-ist command.

Variable

Value

{<A.B.C.D/X|<A.B.C.D> <A.B.C.D>}

Specifies the local IP (IPv4) address and subnet mask of the node.

{<A.B.C.D>}

Specifies the IP address (IPv4) of the vIST peer.

<1–1000>

Specifies the cluster ID of vIST.

It is set to 0 if vIST is not configured.
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