Hello, we have been experiencing random BGP drops recently. Our Telco confirms the circuit is clean and suggests there is a BGP problem.
Does anything in this output of 'sh bpg neighbor' look unusual or suspect ?
Thank you kindly for any help:
BGP neighbor is 192.168.2.193, remote AS 7714, external link
Description: Telco PE Router
BGP version 4, remote router ID 10.72.68.2
BGP state = Established, up for 4d10h
Last read 00:00:21, last write 00:00:22, hold time is 90, keepalive interval is 30 seconds
Neighbor sessions:
1 active, is not multisession capable (disabled)
Neighbor capabilities:
Route refresh: advertised and received(new)
Four-octets ASN Capability: advertised and received
Address family IPv4 Unicast: advertised and received
Enhanced Refresh Capability: advertised
Multisession Capability:
Stateful switchover support enabled: NO for session 1
Message statistics:
InQ depth is 0
OutQ depth is 0
Sent Rcvd
Opens: 1 1
Notifications: 0 0
Updates: 2 73
Keepalives: 13937 12782
Route Refresh: 0 0
Total: 13940 12856
Default minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
Session: 192.168.2.193
BGP table version 17093, neighbor version 17093/0
Output queue size : 0
Index 32, Advertise bit 0
32 update-group member
Inbound soft reconfiguration allowed
NEXT_HOP is always this router for eBGP paths
Slow-peer detection is disabled
Slow-peer split-update-group dynamic is disabled
Interface associated: GigabitEthernet0/1.1139
Sent Rcvd
Prefix activity: ---- ----
Prefixes Current: 7 281 (Consumes 22480 bytes)
Prefixes Total: 7 318
Implicit Withdraw: 0 16
Explicit Withdraw: 0 21
Used as bestpath: n/a 281
Used as multipath: n/a 0
Outbound Inbound
Local Policy Denied Prefixes: -------- -------
Bestpath from this peer: 310 n/a
Total: 310 0
Number of NLRIs in the update sent: max 7, min 0
Last detected as dynamic slow peer: never
Dynamic slow peer recovered: never
Refresh Epoch: 1
Last Sent Refresh Start-of-rib: never
Last Sent Refresh End-of-rib: never
Last Received Refresh Start-of-rib: never
Last Received Refresh End-of-rib: never
Sent Rcvd
Refresh activity: ---- ----
Refresh Start-of-RIB 0 0
Refresh End-of-RIB 0 0
Address tracking is enabled, the RIB does have a route to 192.168.2.193
Connections established 32; dropped 31
Last reset 4d10h, due to Peer closed the session
Transport(tcp) path-mtu-discovery is enabled
Graceful-Restart is disabled
Connection state is ESTAB, I/O status: 1, unread input bytes: 0
Connection is ECN Disabled, Mininum incoming TTL 0, Outgoing TTL 1
Local host: 192.168.2.198, Local port: 179
Foreign host: 192.168.2.193, Foreign port: 1877
Connection tableid (VRF): 0
Maximum output segment queue size: 50
Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes)
Event Timers (current time is 0x10D55A4BA4):
Timer Starts Wakeups Next
Retrans 13940 1 0x0
TimeWait 0 0 0x0
AckHold 12803 12538 0x0
SendWnd 0 0 0x0
KeepAlive 0 0 0x0
GiveUp 0 0 0x0
PmtuAger 0 0 0x0
DeadWait 0 0 0x0
Linger 0 0 0x0
ProcessQ 0 0 0x0
iss: 2900365178 snduna: 2900630140 sndnxt: 2900630140
irs: 1159467277 rcvnxt: 1159714954
sndwnd: 8192 scale: 0 maxrcvwnd: 16384
rcvwnd: 14959 scale: 0 delrcvwnd: 1425
SRTT: 1000 ms, RTTO: 1003 ms, RTV: 3 ms, KRTT: 0 ms
minRTT: 0 ms, maxRTT: 1000 ms, ACK hold: 200 ms
uptime: 383515756 ms, Sent idletime: 21152 ms, Receive idletime: 21352 ms
Status Flags: passive open, gen tcbs
Option Flags: nagle, path mtu capable
IP Precedence value : 6
Datagrams (max data segment is 1460 bytes):
Rcvd: 26745 (out of order: 0), with data: 12806, total data bytes: 247676
Sent: 26650 (retransmit: 1, fastretransmit: 0, partialack: 0, Second Congestion: 0), with data: 13939, total data bytes: 264961
Packets received in fast path: 0, fast processed: 0, slow path: 0
fast lock acquisition failures: 0, slow path: 0
TCP Semaphore 0x30BBAD94 FREE
