we are experiencing a weekly bgp disruption between two sites. We are using cisco and a juniper device. The topology looks like the following:
MX80 (Junos 11.4R7.5) – Arista DCS-7148S ---- Cogent Ckt (L2 MPLS)----- cisco 2960G 48TC-L--- ASA firewall --- Cisco 2800 IOS 12.4(23)
Usually the flap happens in the middle of the week at around 10PM - 12 AM, the bgp peering goes into active. i have contacted the provider and they've confirmed that this is not a maintenance nor an outage on their end. Attached are the graphs that we see from our PRTG and the provider's own graph during the time of the outage.
our Graph was taken directly from the switch interface where our provider's ckt is connected to. clearly, we see a noticeable drop and yet they don't see anything at all. They can't explain the drop. i can confirm as well that there are NO backups or anything that would saturate the link during those times. They've also confirmed that we reach about 85 Mbit/s max on this link which we are provisioned for 1 Gb, so i don't think it's a bandwidth issue. The only suggestion i've got from them was to call during the actual issue.
Have anyone encountered this issue before? inputs are highly appreciated.