Explorer III

Question

Swdan not working anymore

Forum|Forum|2 years ago
December 19, 2023
2 replies
2552 views

Hi

We havr swdan with 2 wan links. Everything was ok until our isp changed our default gateway and we had to change it on our sdwan interface too,but after that internet is not working nad also we have to disable wan1 port in sdwan in order to have internet on wan2. What is the problem?

FortiGate

adambomb1219

SuperUser

Depends on many, many factors. Do you have an ARP entry for the ISP gateway? What does your ISP say? Does your ISP have an ARP entry for the FortiGate?

rezafathiAuthor

Explorer III

I can ping gateway but isp can not ping my wan interface.

adambomb1219

SuperUser

Do you have Ping enabled on the WAN interface?

hbac

Staff

Hi @rezafathi,

If wan1 doesn't work, it should failover to wan2 automatically. Please make sure you have performance SLA configured so that next time, it will failover without disabling wan1.

For the new default gateway, make sure there is an arp entry and try to ping it.

# get system arp

# exec ping x.x.x.x

Regards,

rezafathiAuthor

Explorer III

Yes there is an arp entry gor new gateway and i can ping that.

hbac

Staff

Hi @rezafathi,

You are able to reach the default gateway. Let's try to ping 8.8.8.8.

# exec ping-option reset

# exec ping-options interface wan1

# exec ping 8.8.8.8

# exec ping 1.1.1.1

If it doesn't work, most likely ISP issue. Reboot ISP router will be the first thing I'd try.

Regard,

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