Ethernet Switching
Ethernet Switching

FBF onto a GRE tunnel

‎12-23-2019 04:38 PM

Just wanted to check if GRE tunnel interfaces are supported on EX4300 series switches.

Also if they are supported - if I have a route in a routing-instance that points to this tunnel, and a FilterBasedForwarding rule that drives this routing instance - can I route incoming packets onto this tunnel interface ??

Will do some more googling - but wanted to try here first. 


Ethernet Switching

Re: FBF onto a GRE tunnel

‎12-23-2019 08:05 PM

Hello rameshvpn,


GRE support on EX4300 is software based and “GRE tunneling (EX4300 switches)" is supported with Junos OS Release 14.1 X53-D35. Please check:

IPv4 over generic routing encapsulation (GRE) tunnels—de-encapsulation support --- Junos OS 14.1X53-D35†
IPv4 over generic routing encapsulation (GRE) tunnels—encapsulation support --- Junos OS 14.1X53-D35†

Regarding routing to the GRE, this KB was created for another platform, but same configuration applies on EX4300:

Other useful links for GRE and in general checking support:


Hope this helps.



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