Scenario

Review the output in Example 8-1, and answer the following questions. Example 8-1 Scenario 8-3 Output

FARADAY-gw#show ip bgp neighbor

BGP neighbor is 155.94.83.1, remote AS 2914, external link Index 1, Offset 0, Mask 0x2

BGP version 4, remote router ID 129.250.116.16

BGP state = Established, table version = 457046, up for 1w5d

Last read 00:00:20, hold time is 180, keepalive interval is 60 seconds

Minimum time between advertisement runs is 30 seconds

Received 890723 messages, 0 notifications, 0 in queue

Sent 36999 messages, 0 notifications, 0 in queue continues

Example 8-1 Scenario 8-3 Output (Continued)

Inbound path policy configured Outbound path policy configured Outgoing update AS path filter list is 1 Route map for incoming advertisements is limit-verioverdi Connections established 3; dropped 2 Last reset 1w5d, due to : User reset request No. of prefix received 11031 No. of prefix received 11031 Connection state is ESTAB, I/O status: 1, unread input bytes: 0 Local host: 155.94.83.2, Local port: 11036 Foreign host: 155.94.83.1, Foreign port: 179

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes) Event Timers (current time is 0x845DFA38):

Timer Retrans TimeWait AckHold SendWnd KeepAlive GiveUp PmtuAger DeadWait iss: 829352113 irs: 625978143

Starts Wakeups Next

18473 11 0x0

0 0 0x0

86009 50293 0x0

0 0 0x0

0 0 0x0

0 0 0x0

0 0 0x0

0 0 0x0

snduna: 829702916 sndnxt: 829702916 sndwnd: 16004 rcvnxt: 652708970 rcvwnd: 16342 delrcvwnd: 42

SRTT: 300 ms, RTTO: 607 ms, RTV: 3 ms, KRTT: 0 ms minRTT: 4 ms, maxRTT: 764 ms, ACK hold: 300 ms Flags: higher precedence, nagle Datagrams (max data segment is 536 bytes):

Rcvd: 122915 (out of order: 0), with data: 105023, total data bytes: 26731112 Sent: 109195 (retransmit: 11), with data: 18461, total data bytes: 350802

BGP neighbor is 144.39.228.49, remote AS 701, external link Index 2, Offset 0, Mask 0x4 BGP version 4, remote router ID 144.39.3.104 BGP state = Established, table version = 457055, up for 2w0d Last read 00:00:08, hold time is 180, keepalive interval is 60 seconds Minimum time between advertisement runs is 30 seconds Received 50265 messages, 0 notifications, 0 in queue Sent 37016 messages, 0 notifications, 0 in queue Inbound path policy configured Outbound path policy configured Outgoing update AS path filter list is 1

Route map for incoming advertisements is limit-uunetmemenet Connections established 2; dropped 1

Last reset 2w0d, due to : Peer closing down the session No. of prefix received 1635 Connection state is ESTAB, I/O status: 1, unread input bytes: 0 Local host: 144.39.228.50, Local port: 179 Foreign host: 144.39.228.49, Foreign port: 11013

Enqueued packets for retransmit: 0, input: 0 mis-ordered: 0 (0 bytes) Event Timers (current time is 0x845F16B8): Timer Starts Wakeups Next

Example 8-1 Scenario 8-3 Output (Continued)

Retrans

20357

4

0x0

TimeWait

0

0

0x0

AckHold

29701

26058

0x0

SendWnd

0

0

0x0

KeepAlive

0

0

0x0

GiveUp

0

0

0x0

PmtuAger

0

0

0x0

DeadWait

0

0

0x0

iss: 3360945234 snduna: 3361331966 sndnxt: 3361331966 sndwnd: 15890

irs: 2976917809 rcvnxt: 2977685910 rcvwnd: 15072 delrcvwnd: 1312

SRTT: 306 ms, RTTO: 642 ms, RTV: 15 ms, KRTT: 0 ms minRTT: 4 ms, maxRTT: 908 ms, ACK hold: 300 ms

Flags: passive open, nagle, gen tcbs

Datagrams (max data segment is 1460 bytes):

Rcvd: 48675 (out of order: 0), with data: 29705, total data bytes: 768119 Sent: 46955 (retransmit: 4), with data: 20353, total data bytes: 386750

1 How many sessions are active?

2 What is the state of the sessions, and what do the states mean?

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