show stack
Displays information about the units in a stack and a representation of the stack
topology.
Parameters
Modes
User EXEC mode
The
show stack command displays the following information:
| Output field | Description |
|---|---|
| ID | Specifies the identification number of the stack unit. Each unit in the stack has a unique ID number. |
| Type | Specifies the type (model) of the stack unit. |
| Role | Specifies the role of the stack unit. The roles are controller, standby, or member. |
| Mac Address | Specifies the MAC address of the stack unit. The roles are controller, standby, or member. |
| Pri | Specifies the priority value assigned to the stack unit. The default value is 128. |
| State | Specifies whether the stack unit is local or remote. A unit with a State value of Local is the active controller. Units with a State value of Remote are either standby units or member units. |
| Comment | Indicates if the stack unit is ready (available). |
| Role history | Tracks up to six role changes per stack unit. The initial state is always displayed. Overflow is indicated by ellipses (...). Standby to member role changes are not displayed. Role history also does not display the transition after bootup of a non-active controller unit from member to standby. |
Examples
The following example displays information for an ICX 7150 three-unit stack. The command includes information on topology. The stack shown is configured in a ring with trunks between units 1 and 2 and units 1 and 3.
ICX7150-24 Router(config-unit-1)# show stack
T=35m51.5: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7150-24 active 00e0.5200.0100 128 local Ready
2 S ICX7150-48P standby 748e.f882.e418 0 remote Ready
3 D ICX7150-24P member cc4e.24b4.729c 0 remote Ready
active standby
+---+ +---+ +---+
=3/1| 1 |3/3==3/3| 3 |3/1--3/3| 2 |3/1=
| +---+ +---+ +---+ |
| |
|-------------------------------------|
Will assign standby in 56 sec due to all ready
Standby u2 - protocols ready, can failover
Current stack management MAC is 00e0.5200.0100
The following example includes a role history for a three-unit stack.
ICX7750-26Q Router# show stack
T=29m36.7: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1S ICX7750-26QXG standby 748e.f8f9.6300 128 remote Ready
2S ICX7750-26QXG member cc4e.2438.7280 0 remote Ready
4S ICX7750-26QXG active cc4e.2438.7500 128 local Ready
active standby
+---+ +---+ +---+
-2/1| 4 |2/4--2/1| 2 |2/4--2/1| 1 |2/4-
| +---+ +---+ +---+ |
| |
|-------------------------------------|
Standby u1 -protocols ready, can failover or manually switch over
Role history: N: standalone, A: active, S: standby, M: member
U1: N->A->S->M->S, U2: M->S->A->S->M, U4: M->S->A
Current stack management MAC is cc4e.2438.7500
The following two examples show information for an ICX 7650 stack that includes rear-module operating mode.
ICX7650-48ZP# show stack
T=5d19h28m49.5: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7650-48ZP active 609c.9f52.2c96 128 local Ready
2 S ICX7650-48ZP standby 609c.9f52.2b22 10 remote Ready
active standby
+---+ +---+
3/1| 1 |3/3==3/3| 2 |3/1
+---+ +---+
Standby u2 - protocols ready, can failover
Current stack management MAC is 609c.9f52.2c96
Stack ports are operating at 40G.
ICX7650-48ZP# show stack
T=5d19h28m49.5: alone: standalone, D: dynamic cfg, S: static
ID Type Role Mac Address Pri State Comment
1 S ICX7650-48ZP active 609c.9f52.2c96 128 local Ready
2 S ICX7650-48ZP standby 609c.9f52.2b22 10 remote Ready
active standby
+---+ +---+
3/1| 1 |3/2-2/3 | 2 |3/1
+---+ +---+
Standby u2 - protocols ready, can failover
Current stack management MAC is 609c.9f52.2c96
Stack ports are operating at 100G.
History
| Release version | Command history |
|---|---|
| 08.0.61 | This command was modified to include role history transitions for all stack units. |
| 08.0.70 | This command was modified to include operating mode information for ICX 7650 stacks. |