Management interface split detection

NOTE:

For more information, refer to vsf split-detect.

VSF stack supports management split detection, which requires users to connect the management interfaces of the primary and secondary stack members to the same L2 network.

The Primary stack member is member "1", whereas the secondary member is the user-configured secondary switch. Once the stack is split, both of these switches become master of their respective fragments. The fragment with "1" as master is referred to as the primary fragment, and the fragment with the secondary switch as master is the secondary fragment.

NOTE:

It is also possible to connect the management interfaces of primary and secondary to one another for split detection.

If the secondary fragment discovers that the primary fragment is operational, it will bring down all front-plane non-VSF interfaces on the secondary fragment to minimize network disruption due to duplicate MAC or IP addresses.

The interfaces will remain down until the stack is reconnected or the primary fragment goes down. The interfaces of the primary fragment will always remain operational.

The show vsf output in the Primary fragment will look like this:

switch# show vsf

MAC Address              : 38:21:c7:5c:f4:c0
Secondary                : 2
Topology                 : Standalone
Status                   : Active Fragment
Split Detection Method   : mgmt


Mbr Mac Address         type           Status
ID
--- ------------------- -------------- ---------------
1   38:21:c7:5c:f4:c0   JL668AJ728A         Master
2                       JL668AJ728A         In Other Fragment
3                       JL668AJ728A         In Other Fragment
4                       JL668AJ728A         In Other Fragment
switch#
switch# show vsf topology
 Mstr
 +---+
 | 1 |
 +---+
switch#

The show vsf output in the secondary fragment will look like this:

switch# show vsf

MAC Address              : 38:21:c7:5c:f4:c0
Secondary                : 2
Topology                 : Chain
Status                   : Inactive Fragment
Split Detection Method   : mgmt


Mbr Mac Address         type           Status
ID
--- ------------------- -------------- ---------------
1                       JL668AJ728A         In Other Fragment
2   38:21:c7:5c:77:40   JL668AJ728A         Master
3   38:21:c7:5a:a5:80   JL668AJ728A         Member
4   38:21:c7:5c:b3:00   JL668AJ728A         Member
switch#
switch# show vsf topology
                   Mstr
 +---+    +---+    +---+
 | 4 |1==2| 3 |1==2| 2 |
 +---+    +---+    +---+
switch#