View Only
last person joined: 2 days ago 

Ask questions and share experiences about EX and QFX portfolios and all switching solutions across your data center, campus, and branch locations.
  • 1.  Automatic Switch Metro-E Link

    Posted 07-31-2023 00:20


    I have 2 Metro-E link from different provider connected to my EX4300 Switch.

    We trunk the vlans to deliver the services.

    Sometimes, if 1 link fail, the vlans still going through failure link, because the interface is still up and junos still think that link is up.

    How to overcome this condition? i want, if the metro-e link fail (in the middle of MPLS), juniper can automatically switch to backup link

    how to do that ? and how the configuration?

    Thanks in advanced


  • 2.  RE: Automatic Switch Metro-E Link

    Posted 07-31-2023 02:47


    There are several ways how this can be done. What is Metro-E is it a pure channel, l2 transmission or what ?
    What bandwidth are these channels ? the same ?
    What latency are the channels ?

    Grzegorz Dacka

  • 3.  RE: Automatic Switch Metro-E Link

    Posted 07-31-2023 06:31

    If this is a layer 3 link you could configure dynamic routing protocols across the link so that the routes will just go away when the peer across the vlan link is lost.

    For layer 2 connections you can configure test probes using RPM to have the switches on either side see if the link is still reachable.


    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)