XR-RT1 Configuration:
if maximum-prefix 1,000,000 for both 1.1.1.2 & 2.2.2.2 peer.
XR-RT1#
Neighbor Spk AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down St/PfxRcd
1.1.1.20 650 2515237175 772012 0 0 0 03:16:28 Idle (PfxCt)
2.2.2.20 650 2506061347 772024 0 0 0 03:16:25 Idle (PfxCt)
XE-RT1#sh ip bgp summary
1.1.1.1 4 650 0 0 1 0 0 1y24w Idle
XE-RT2#sh ip bgp summary
1.1.1.1 4 650 0 0 1 0 0 30w2d Idle
XR-RT1 Logs:
RP/0/RSP0/CPU0: : bgp[1049]: %ROUTING-BGP-5-MAXPFX : No. of IPv6 Labeled-unicast prefixes received from 1.1.1.1 has reached 98305, max 131072
RP/0/RSP0/CPU0: : bgp[1049]: %ROUTING-BGP-5-ADJCHANGE_DETAIL : neighbor 1.1.1.1 Down - Peer exceeding maximum prefix limit (CEASE notification sent - maximum number of prefixes reached) (VRF: default; AFI/SAFI: 1/1, 2/4) (AS: 650)
XE-RT1 Logs:
%BGP_SESSION-5-ADJCHANGE: neighbor 1.1.1.1 IPv6 Unicast topology base removed from session Peer closed the session
%BGP_SESSION-5-ADJCHANGE: neighbor 1.1.1.1 IPv4 Unicast topology base removed from session Peer closed the session
Topological:
----------- XE-RT1
XR-RT1
----------- XE-RT2
ISSUE: XR-RT1 detects that the prefix limit has been reached out and due to exceeding prefix limit, BGP went down.
Question:
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Why does logs shows "from 1.1.1.1 has reached 98305, max 131072" while my maximum-prefix allowed was up 1million?
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How to pin point the cause of the maxed-out issue?
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Noticed that when prefix maxed out issue occured XE's BRG "up/down time" is not similar with the XR or not been reset (shows that its idle for along time)?
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Seems like logs from XR and XE doenst match (XR only ipv6 logs while XE shows IPV4/IPV6)?
Thank you
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