I have a phone number for each router.
I see two lines with ERX I provided all to make sure I provided what you needed.
Are the stats in the above post from the connection that goes down after a few days? Could we also get some comparative stats from the other connection so we can see if anything may correlate or be problematic? The modem logs from the router that goes offline after a few days before a reboot would be awesome if you can pastebin a copy. A Juniper ERX won't cause this problem. They typically only cause speed-related issues when certain equipment is in the mix.