RUTX50 > VeloCloud Edge & Zscaler GRE

NETWORKING SOLUTIONS
1

Good afternoon,

I’m trying to establish Zscaler GRE tunnel from a VeloCloud SDWAN Edge that is connected behind a RUTX50. The RUTX50 is connected via SIM 1 to WAN.

I did tcpdump -i br-lan proto gre and see that GRE traffic is sent out but there’s no return traffic.

I tried
iptables -I INPUT -j ACCEPT
iptables -I FORWARD -j ACCEPT
as well, but still with the same result. GRE tunnel from VeloCloud is not established.

I reduced the MTU for mob1s1a1 to 1300 with the same result.

Zscaler GRE is working fine from the same VeloCloud Edge via different DSL circuit.

What is there that I haven’t looked at?

3

Hi there,

Since we’re not familiar with solutions such as VeloCloud or Zscaler, I’d need to ask you to provide more information about the configuration itself (mainly on our end), and possibly the full topology (although you did mention it in text somewhat).

Any kind of information that would help me understand the issue better and get to know the setup better will help a ton.

Thanks,
M.