Administrator Guide

A standalone is added to a stack. The standalone and the master unit have the same priority, but the standalone has a lower MAC address,
so the standalone reboots. In the second example, a standalone is added to a stack. The standalone has a higher priority than the stack, so
the stack (excluding the new unit) reloads.
Example of Adding a Standalone with a Lower MAC Address to a Stack
----------STANDALONE BEFORE CONNECTION---------------
Standalone#show system brief
Stack MAC : 00:01:e8:d5:ef:81
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
1 Management online S3048-ON S3048-ON 9.8(0.0P2) 52
2 Member not present
3 Member not present
4 Member not present
5 Member not present
6 Member not present
Standalone#show system | grep priority
Master priority : 0
-----------STACK BEFORE CONNECTION----------------
Stack#show system brief
Stack MAC : 00:01:e8:d5:f9:6f
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
------------------------------------------------------------------------------------
1 Standby online S3048-ON S3048-ON 9.8(0.0P2) 52
2 Management online S3048-ON S3048-ON 9.8(0.0P2) 52
3 Member not present
4 Member not present
5 Member not present
6 Member not present
Stack#show system stack-unit 1 | grep priority
Master priority : 0
Stack#show system stack-unit 2 | grep priority
Master priority : 0
Example of Adding a Standalone with a Lower MAC Address and Equal Priority to a Stack
---------------STANDALONE AFTER CONNECTION--------------------------
Standalone#%STKUNIT0-M:CP%POLLMGR-2-ALT_STACK_UNIT_STATE:Alternate Stack-unit
is present
00:20:20: %STKUNIT0-M:CP %CHMGR-5-STACKUNITDETECTED: Stack unit 1 present
00:20:22: %STKUNIT0-M:CP %CHMGR-5-STACKUNITDETECTED: Stack unit 2 present
Going for reboot. Reason is Stack merge
[bootup messages omitted]
---------------STACK AFTER CONNECTION---------------------
Stack# 3w1d14h: %STKUNIT1-M:CP %CHMGR-5-STACKUNITDETECTED: Stack unit 2 present 3w1d14h:
%STKUNIT1-M:CP %CHMGR-2-STACKUNIT_DOWN: Stack unit 2 down - card removed
3w1d14h: %STKUNIT1-M:CP %CHMGR-5-STACKUNITDETECTED: Stack unit 2 present
3w1d14h: %STKUNIT1-M:CP %CHMGR-5-CHECKIN: Checkin from Stack unit 2 (type , 52 ports)
3w1d14h: % %CHMGR-0-PS_UP: Power supply 0 in unit 2 is up
3w1d14h: %STKUNIT1-M:CP%CHMGR-5-STACKUNITUP: Stack unit 2 is up
Stack#show system brief
Stack MAC : 00:01:e8:d5:f9:6f
Reload-Type : normal-reload [Next boot : normal-reload]
-- Stack Info --
Unit UnitType Status ReqTyp CurTyp Version Ports
----------------------------------------------------------------------
1 Standby online S3048-ON S3048-ON 9.8(0.0P2) 52
2 Management online S3048-ON S3048-ON 9.8(0.0P2) 52
3 Member not present
4 Member not present
Stacking
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