We (AS53347) moved to a new border router overnight and had some issues with getting our MICE route reflector peerings up -- we'd learn a route or two per second. We had to tweak our Arista's BGP configuration to not "enforce-first-as". Most other direct peers were fine.
Eventually RR #1 came up just fine, but RR #2 continues to languish, learning just learning about 10,900 routes.
SiouxCenter-Arista-North(s1)#show ip bgp sum
BGP summary information for VRF default
Router identifier 220.127.116.11, local AS number 18883
Neighbor Status Codes: m - Under maintenance
Neighbor V AS MsgRcvd MsgSent InQ OutQ Up/Down State PfxRcd PfxAcc
18.104.22.168 4 53679 44493 4138 0 0 10:56:46 Estab 56188 56188
22.214.171.124 4 53679 39124 7640 0 0 11:38:40 Estab 10929 10929
I'm not sure if we have remote access to the RR's, but whoever does, any hints as to why we're experiencing this behavior?