Cause This failure can happen if you have an active stack that has already reached its maximum number of members. It can also happen when the maximum number of switches is reached with a combination of active members and strictly provisioned members.
Since one of the suggested initial deployment techniques is a deterministic method using strictly provisioned entries, this failure example demonstrates what occurs if the maximum number of members is reached by strictly provisioning 10 members. At least one of these configuration entries has an incorrect MAC addresses. Similar to the mismatched MAC address example, the stack attempts to “plug-and-go” to add the switch, however, since the maximum number of membership has already been reached, the switch cannot join the stack.
Action-
The following example shows the
show stacking output before the switch attempts to join.
Viewing stack members before the join
switch(config)# show stacking
Stack ID : 00031cc1-de4d87c0
MAC Address : 1cc1de-4dc765
Stack Topology : Mesh
Stack Status : Active
Uptime : 0d 1h 27m
Software Version : KA.15.05.0000x
Mbr
ID Mac Address Model Pri Status
--- ------------- -------------------------------------- --- ---------------
1 1cc1de-4d87c0 HPE J9573A 3810-24G-PoE+-2SFP+ Switch 200 Standby
2 1cc1de-4dc740 HPE J9573A 3810-24G-PoE+-2SFP+ Switch 128 Commander
3 1cc1de-4dbd40 HPE J9575A 3810-24G-2SFP+ Switch 128 Member
4 1cc1de-4d79c0 HPE J9576A 3810-48G-4SFP+ Switch 175 Member
5 1cc1de-000005 HPE J9576A 3810-48G-4SFP+ Switch 128 Not Joined
6 1cc1de-000006 HPE J9576A 3810-48G-4SFP+ Switch 128 Not Joined
7 1cc1de-000007 HPE J9573A 3810-24G-PoE+-2SFP+ Switch 128 Not Joined
8 1cc1de-000008 HPE J9573A 3810-24G-PoE+-2SFP+ Switch 128 Not Joined
9 1cc1de-000009 HPE J9574A 3810-48G-PoE+-4SFP+ Switch 128 Not Joined
10 1cc1de-00000a HPE J9574A 3810-48G-PoE+-4SFP+ Switch 128 Not Joined
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When a switch that does not match the MAC addresses attempts to join, that switch reboots when the maximum configuration is detected. The active stack logs the following:
W 10/07/00 06:01:11 03253 stacking: ST3–CMDR: Maximum number of switches in the stack has been reached. Cannot add 1cc1de-4da900 type J9576A
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The failure can be due to one of the strictly provisioned entries being incorrect. To correct this entry, reboot the switch. If there are already 10 switches in the stack, you cannot add additional switches at this time.