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How to configure a /31 subnet in EXOS

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TitleHow to configure a /31 subnet in EXOS
Objective
Configure point-to-point interfaces with a 31 bit subnet (/31 - 255.255.255.254).
Environment
  • EXOS
Procedure
CR XOS0059417 (that accomplish to RFC 3021) was first introduced on EXOS 15.7 (and later releases)

Follow this procedure in order to enable it:
  1. Upgrade your EXOS version to 15.7
  2. Configure vlan <vlan-name> ipaddress <ip-address>/31
Additional notes
In case you try to configure a 31 bit subnet without an EXOS version that contains the fix, you'll get the following error:

EXOS # configure vlan TESTVLAN ipaddress 192.168.10.1/31
Error: Address is broadcast address!

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