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Route-based VPN with VRRP interfaces



Article ID: KB30589 KB Last Updated: 14 Oct 2015Version: 2.0

Unable to use a route-based VPN when the outgoing interface is configured as a VRRP interface.


The outgoing interface is configured as a VRRP interface.  When trying to route traffic through a route-based VPN, traffic fails due to "no route" even if the route exists.

set interface ethernet0/1 ip
set interface ethernet0/1 route
set interface ethernet0/1:1 ip
set interface ethernet0/1:1 route
set interface tunnel.3 ip unnumbered interface ethernet0/2
set interface ethernet0/1 protocol vrrp
set interface ethernet0/1 protocol vrrp enable
set interface ethernet0/1:1 protocol vrrp preempt
set interface ethernet0/1:1 protocol vrrp priority 50

set ike gateway "Gateway_Test" address Main outgoing-interface "ethernet0/1:1" preshare "zwQ7amfCNQlEogsNvfCbZG0GPvngLauJ2g==" proposal "pre-g2-3des-sha"
set vpn "VPN_Test" gateway "Gateway_Test" no-replay tunnel idletime 0 proposal "nopfs-esp-3des-sha"
set vpn "VPN_Test" bind interface tunnel.3

set route interface tunnel.3

****** 124713.0: <Trust/ethernet0/2> packet received [128]******
ipid = 1451(05ab), @03bf1e10
packet passed sanity check.
flow_decap_vector IPv4 process
no session found
flow_first_sanity_check: in <ethernet0/2>, out <N/A>
chose interface ethernet0/2 as incoming nat if.
flow_first_routing: in <ethernet0/2>, out <N/A>
search route to (ethernet0/2,> in vr trust-vr for vsd-0/flag-0/ifp-null
no route to (> in vr trust-vr/0
packet dropped, no route


Interface ethernet0/1:1 has VSD group ID 1, but the packet has VSD group ID 0, which it gets from the ingress interface, ethernet0/2. The route lookup requires the VSD group ID of the traffic to match the VSD group ID of the outgoing interface.


ScreenOS does not support route-based VPNs over VRRP interfaces.

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