I have five steel heads. Four 250's and a 550 at the HQ. Everything was working fine until a few days ago. The four 250's all show up as each others peers. The 550 is not peering with any of the other SH's. I double checked the firewall to confirm the commands needed to allow peering to occur are there.
How can I trouble shoot this and how can I figure out why the SH's are not peering?