Hi, Guys 'n' Gals.
As the subject states, I installed an XG135w at a client site that is on Asahi Net (NTT backbone) with gigabit fibre. I'm in an unhappy situation where I have been unable to leave the box online because with Japan's state of emergency, basically the entire staff are working from home. As such, my questions and the information I can provide are full of holes. I forced them through five hours of downtime before I had to restore service with their existing VPN router.
I've set up a number of UTM devices in the past and the UTM units manage MSS automagically. With the XG, setting MTU to the required 1454 causes the interface config to complain that I need an MSS at least 48 bites lower than the MTU. OK, so I set MSS override to 1407, which by my calculations is the largest MSS. The connection to the service provider comes up, but when I ping 8.8.8.8, I see a consistent 12-13% packet loss. With the same ONU and Ethernet cables, the customer's other VPN router has zero loss.
My Googlefu has left me blank and I really don't know where to start with this. The client previously had an SG125 on that connection that worked without issue for years before it suddenly bricked (Intel SOC issue). So, I'm somewhat at a loss as to why an SG with UTM9 would work flawlessly and a new XG with newest firmware (as of yesterday) would see such high packet loss. Any suggestions on what I can check in the XG configuration would be most helpful. This is my first XG and the UI has yet to become intuitive.
Please note: I cannot at this time supply further information and I do not have access to the unit until the weekend.
Warmest regards,
trane
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