I have an issue with two servers across a DMVPN. Backup software i failing. ICMP and traces all look good between them. No aysmetric routing. I ran a capture on the Core switch at one of the sites capturing traffic between the two hosts and I have attached screenshot. Anything obvious standing out as it looks like something is wrong, but not entirely sure what.
asked 30 Oct '15, 03:25
If you look at the conversation between ports 52309 (client port) and 50008 (server port), starting from 4th packet, every time the client sent a SYN (don't worry about ECN CWR flags), it got a SYNACK packet and then TCP RST packet. What's funny is that the TCP RST packet has a strange sequence number (4274946776 or 0xfece82d8).
If there is time information, that could be helpful.
answered 08 Nov '15, 06:54