Configure IRB

## Delete default

delete default switch

Bridging and VLANs

Understanding Bridging and VLANs on Switches

Network switches use Layer 2 bridging protocols to discover the topology of their LAN and to forward traffic toward destinations on the LAN. This topic explains the following concepts regarding bridging and VLANs:

## Create the VLAN by assigning it a name and a VLAN ID:

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user@switch# set vlans support vlan-id 111

## Assign an interface to the VLAN by specifying the logical interface (with the unit statement) and specifying the VLAN name as the member:

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user@switch# set interfaces ge-0/0/18 unit 0 family ethernet-switching vlan members support

## Create the subnet for the VLAN’s broadcast domain:

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user@switch# set interfaces irb unit 111 family inet address 10.10.10.x/24

Where the value of X can be any number between the range 1 to 254.

### Bind a Layer 3 interface with the VLAN:

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user@switch# set vlans support l3-interface irb.111

## Verify

user@switch> show interfaces irb terse

user@switch> show vlans

user@switch> show ethernet-switching table

## source :

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/bridging-and-vlans.html#id-configuring-vlans-on-switches

https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/bridging-routed-vlan-interfaces-ex-series-cli.html

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/irb-and-bridging.html

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