Switching

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  • 1.  Junos Equivalent to IOS "arp alias"

    Posted 10-10-2012 16:49

    Looking for the Junos equivalent to the IOS configuration,

    arp 10.1.2.3 0600.dead.f00d alias

     That is the switch responds to ARP requests for the IP address 10.1.2.3 with the MAC address 06:00:de:ad:f0:0d. It's standing in and doing the ARP for some other device on the network that really owns that MAC.

     

    The hardware is an EX4500/4200 VC running 11.1R3.5.

     

    Before someone asks why, we have a device on the network that has the IP address assigned to a loopback address. It is a Linux-based appliance, and there is no support to access to the underlying OS to configure the ARP locally. This works find with a Cisco 6500 switch, but we need to now do it at a different site with Juniper EX switches.



  • 2.  RE: Junos Equivalent to IOS "arp alias"

    Posted 10-10-2012 17:44

    Hi,

    Did you check the following link ?

     

    http://www.juniper.net/techpubs/software/junos-es/junos-es91/junos-es-swconfig-interfaces-and-routing/configuring-static-arp-entries-on-ethernet-interfaces.html

     

     

    <edit  interfaces ge-0/0/x unit y family inet address 10.1.1.1/24>

     set arp 10.1.1.3 mac 00:ff:85:7f:78:03 publish

     

    Regards,

    Moses N

     



  • 3.  RE: Junos Equivalent to IOS "arp alias"
    Best Answer

    Posted 10-11-2012 09:16

    Thanks for the pointer. With that, I could find the docs for my Junos,

     

    http://www.juniper.net/techpubs/en_US/junos11.1/topics/usage-guidelines/interfaces-configuring-static-arp-table-entries.html