A virtual chassis is a scalable switch composed of multiple interconnected EX4200 switches. Up to 10 EX4200 switches can be interconnected as a Virtual Chassis (VC) using Virtual Chassis Cables (VCP). Each member switch can be cabled to one or two other member switches, using either the dedicated Virtual Chassis Ports (VCP) on the rear panel or an uplink port that has been set as a VCP. The members that are cabled together are considered neighbor members.
This article explains how to verify the Virtual Chassis member IDs.
The primary role's priorities and member IDs are assigned by the software by default but can be configured manually. By default, the first member will be member ID=0. When you interconnect the switches with dedicated Virtual Chassis Port (VCP) cables and power on the switches, the VCPs are operational and the primary role's priorities and member IDs are assigned by the software. The role and member ID of the member switches are displayed on the front-panel LCD (see user manual for member election).
To display the role and member ID assignments by using the CLI, issue the show virtual-chassis status
command and the show chassis lcd
command, which list the member switches that are interconnected as a virtual chassis with the member IDs:
show virtual-chassis status
command
user@switch> show virtual-chassis status
Virtual Chassis ID: 0000.e255.00e0
Mastership Neighbor List
Member ID Status Serial No Model Priority Role ID, Interface
0 (FPC 0) Prsnt abc123 ex4200-48p 255 Master* 1 vcp-0
2 vcp-1
1 (FPC 1) Prsnt def456 ex4200-24t 255 Backup 2 vcp-0
0 vcp-1
2 (FPC 2) Prsnt abd231 ex4200-24p 128 Linecard 0 vcp-0
1 vcp-1
This output verifies that three EX 4200 switches have been interconnected as a virtual chassis using their dedicated VCPs. The display shows which of the VCPs is connected to which neighbor. The first port (vcp-0) of member 0 is connected to member 1 and the second port of member 0 (vcp-1) is connected to member 2. The FPC slots for EX-series switches are the same as the member IDs.
The primary role priority values indicate that the primary and backup members have been explicitly configured, because they are not using the default value (128).
Output Fields
-
Virtual Chassis ID: Assigned ID that applies to the entire virtual chassis configuration
-
Member ID: Assigned member ID and FPC slot (from 0 through 9)
-
Status:
-
Serial No: Serial number of the member switch
-
Model: Model number of the member switch
-
Mastership Priority:Mastership priority value of the member switch
-
Role: Role of the member switch
-
Neighbor List: Member ID of the neighbor member to which this member’s VCP interface is connected
show chassis lcd
command
user@switch>show chassis lcd
FPM Display contents for slot: 1
00:BK fpc1
LED:SPD ALARM 00
FPM Display contents for slot: 2
01:RE fpc2
LED:SPD ALARM 00
FPM Display contents for slot: 3
02:LC fpc3
LED:SPD ALARM 0
2020-10-21: Article reviewed for accuracy; no changes made