How to configure Virtual Chassis in EX-2300 Juniper

Virtual Chassis is a feature in Ethernet Switches that allows you to interconnect two or more switches, enabling them to operate as a unified, single, high-bandwidth switch.

It provides network resiliency in the form of redundant Routing Engines and network expansion flexibility with minimal impact to a configuration. \

EX 2300 Virtual Chassis Configuration

All EX-2300 switch models support Virtual Chassis, and you can interconnect different models, which allows you to choose among a range of possible port configurations within the same Virtual Chassis.

The Virtual Chassis configuration includes a master switch and a backup switch, with all other switches in the configuration designated as linecard member switches.

The procedure to configuration steps applicable to a Virtual Chassis are:-

  • Power on only the switch that you will use as the master switch.
  • EX2300 switches do not have any ports that are configured by default as VCPs but you can configure the 10-Gbps Ethernet uplink ports as VCPs, and use those to interconnect the switches into a Virtual Chassis
  • Set the master switch into mixed mode, and reboot the switch to complete the configuration:

user@device> request virtual-chassis mode mixed reboot

  • On each individual member switch, configure the SFP+ uplink ports that will be used as VCPs to interconnect the member switches .

user@device> request virtual-chassis vc-port set pic-slot 1 port 2
user@device> request virtual-chassis vc-port set pic-slot 1 port 3

  • To Check the VC-Port Status

user@device> show virtual-chassis vc-port
Interface Type Trunk Status Speed Neighbor
or ID (mbps) ID Interface
PIC / Port
1/2 Configured -1 Down 10000
1/3 Configured -1 Down 10000

  • Cable the ports interconnecting the members if they were not connected earlier.
  • Specify the preprovisioned configuration mode:

user@device# set virtual-chassis preprovisioned

  • (Optional: Recommended for a two-member Virtual Chassis) Disable the split and merge feature:

user@device# set virtual-chassis no-split-detection

  • Specify all the members that you want included in the Virtual Chassis, listing each switch’s serial number with the desired member ID and role

user@device# set virtual-chassis member 0 serial-number abc123 role routing-engine
user@device# set virtual-chassis member 1 serial-number def456 role routing-engine
user@device# set virtual-chassis member 2 serial-number ghi789 role line-card
user@device# set virtual-chassis member 3 serial-number jkl012 role line-card

  • Commit/Save the configured items.

user@device# commit

  • Power on the other member witches. The member IDs and roles have been determined by the configuration, so you can power on the member switches in any order.
  • To check the Virtual Chassis Status

user@device> show virtual-chassis status

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