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How to enable inter-VLAN routing in EXOS

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TitleHow to enable inter-VLAN routing in EXOS
Objective
How to enable inter-VLAN routing in EXOS
Environment
  • EXOS all
  • Summit
  • BlackDiamond
Procedure
  1. Configure an IP address on each VLAN that is participating in routing
  • configure vlan <vlan_name> ipaddress <ip_address>/<subnet_mask>
  1. Enable IP forwarding on each VLAN
  • enable ipforwarding vlan <vlan_name>
  1. Make sure port's are configured as untagged for end devices (PC's).
    • configure vlan <vlan_name> add ports <port-list> untagged
  2. Check PC's NIC configuration for:
    • correct IP address
    • correct subnet mask
    • correct default gateway

Please note that inter-VLAN routing is not supported on the Summit X430 platform.
Additional notes
Example:
In this example, we will create two VLANs on a switch that can communicate with each other.  Port 1 will be in VLAN v10 untagged, and port 2 will be in VLAN v20 untagged. Inter-VLAN routing or "ipforwarding" will be enabled on both VLANs.  When done, both PC's should be able to ping their gateways and each other.  Example PC configurations are provided.

User-added image

Switch configuration:
# remove ports 1 and 2 from default vlan
configure vlan default delete port 1-2
#
#create vlan v10 with a 802.1q tag of 10
create vlan v10 tag 10
#apply IP address to vlan v10
configure vlan v10 ipaddress 10.10.10.1/24
#add port 1 untagged to VLAN v10
configure vlan v10 add port 1 untagged
#
#create vlan v20 with a 802.1q tag of 20
create vlan v20 tag 20
#apply IP address to vlan v20
configure vlan v20 ipaddress 20.20.20.1/24
#add port 2 untagged to VLAN v10
configure vlan v20 add port 2 untagged
#enable inter-VLAN routing on vlan v10 and v20
enable ipforwarding vlan v10
enable ipforwarding vlan v20


PC on port 1 configuration:
IP address:          10.10.10.10
subnet mask:       255.255.255.0
default gateway: 10.10.10.1

PC on port 2 configuration:
IP address:          20.20.20.20
subnet mask:      255.255.255.0
default gateway: 20.20.20.1


Hub REF: https://community.extremenetworks.com/extreme/topics/how-to-configure-two-vlan-in-one-switch-to-communicate-without-using-the-tagging-port

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