Data Retransmission in Brocade ICX6450-48 2 stacked switch

[manish_singh_7n]

Hi All,

I have connected few PCs with 2xICX6450-48 switch in local envrionment.

Assigned private IPs(like 169.254.3.1-50) in my PCs. Now i see retransmission in TCP connections of many PCs, i checked switch for any problem but could not see any errors in either ethernet interfaces or stack interfaces.

netstat O/P snippet on PC 169.254.3.31:

2018-10-02 03:08:10 tcp        0  38093 169.254.3.31:53098          169.254.3.32:13602          ESTABLISHED 601        1280802    4486/xxx on (0.28/1/0)
2018-10-02 03:38:10 tcp        0    996 169.254.3.31:46332          169.254.3.49:12602          ESTABLISHED 601        1689988    5919/xxx on (0.34/1/0)

Switch stacking settings:
all stack ports are 10G.
I have configured stack ports on both switch units in trunk mode (Trunk1: [1/2/1, 1/2/2],
Trunk2: [1/2/3, 1/2/4]).

Firmware:
I am using firmware 08.0.30

When i checked command output "show stack rel-ipc", i see a field "Data retransmits done: ". Is it says switch is doing restarnsmission for packets.
How to minimize it.


Output of few diagnostic command:

1>show version
  Copyright (c) 1996-2015 Brocade Communications Systems, Inc. All rights reserved.
    UNIT 1: compiled on Mar 30 2015 at 18:25:06 labeled as ICX64R08030
                (9693416 bytes) from Primary ICX64R08030.bin
        SW: Version 08.0.30T313
    UNIT 2: compiled on Mar 30 2015 at 18:25:06 labeled as ICX64R08030
                (9693416 bytes) from Primary ICX64R08030.bin
        SW: Version 08.0.30T313
  Boot-Monitor Image size = 786944, Version:10.1.05T310 (kxz10105)
  HW: Stackable ICX6450-48
==========================================================================
UNIT 1: SL 1: ICX6450-48 48-port Management Module
         Serial  #: BZU3222L063
         License: ICX6450_BASE_ROUTER_SOFT_PACKAGE   (LID: dbwIHHHnFLI)
         P-ENGINE  0: type DEF0, rev 01
         P-ENGINE  1: type DEF0, rev 01
==========================================================================
UNIT 1: SL 2: ICX6450-SFP-Plus 4port 40G Module
==========================================================================
UNIT 2: SL 1: ICX6450-48 48-port Management Module
         Serial  #: BZU3220L094
         License: ICX6450_BASE_ROUTER_SOFT_PACKAGE   (LID: dbwIHHFnFOJ)
         P-ENGINE  0: type DEF0, rev 01
         P-ENGINE  1: type DEF0, rev 01
==========================================================================
UNIT 2: SL 2: ICX6450-SFP-Plus 4port 40G Module
==========================================================================
  800 MHz ARM processor ARMv5TE, 400 MHz bus
65536 KB flash memory
  512 MB DRAM
STACKID 1  system uptime is 188 day(s) 14 hour(s) 20 minute(s) 18 second(s)
STACKID 2  system uptime is 188 day(s) 15 hour(s) 1 minute(s) 13 second(s)
The system started at 12:35:57 GMT+00 Wed Nov 29 2017

 The system : started=warm start         reloaded=by "reload"
My stack unit ID = 1, bootup role = active


****************************************************************************

2>show stack

Stack Details
=============
T=508d9h20m42.3: alone: standalone, 😧 dynamic cfg, S: static
ID   Type          Role    Mac Address    Pri State   Comment                  
1  S ICX6450-48    active  609c.9f8f.dbc0 128 local   Ready
2  S ICX6450-48    standby 609c.9f8f.1bc0   0 remote  Ready

    active       standby                                                      
     +---+        +---+                                                       
 =2/3| 1 |2/1==2/3| 2 |2/1=                                                   
 |   +---+        +---+   |                                                   
 |                        |                                                   
 |------------------------|                                                  
Standby u2 - protocols ready, can failover
Current stack management MAC is 609c.9f8f.dbc0

Image-Auto-Copy is Enabled.

      Stack Port Status                        Neighbors                             
Unit# Stack-port1         Stack-port2          Stack-port1         Stack-port2       
1     up (1/2/1-1/2/2)    up (1/2/3-1/2/4)     U2 (2/2/3-2/2/4)    U2 (2/2/1-2/2/2)  
2     up (2/2/1-2/2/2)    up (2/2/3-2/2/4)     U1 (1/2/3-1/2/4)    U1 (1/2/1-1/2/2)  

Unit# System uptime
1     508 day(s) 9 hour(s) 20 minute(s) 42 second(s)
2     508 day(s) 9 hour(s) 18 minute(s) 19 second(s)
The system started at 01:13:36 GMT+00 Sun May 07 2017

3> show media

Port 1/1/1:  Type : 1G M-C (Gig-Copper)
Port 1/1/2:  Type : 1G M-C (Gig-Copper)
Port 1/1/3:  Type : 1G M-C (Gig-Copper)
Port 1/1/4:  Type : 1G M-C (Gig-Copper)
Port 1/1/5:  Type : 1G M-C (Gig-Copper)
Port 1/1/6:  Type : 1G M-C (Gig-Copper)
Port 1/1/7:  Type : 1G M-C (Gig-Copper)
Port 1/1/8:  Type : 1G M-C (Gig-Copper)
Port 1/1/9:  Type : 1G M-C (Gig-Copper)
Port 1/1/10:  Type : 1G M-C (Gig-Copper)
Port 1/1/11:  Type : 1G M-C (Gig-Copper)
Port 1/1/12:  Type : 1G M-C (Gig-Copper)
Port 1/1/13:  Type : 1G M-C (Gig-Copper)
Port 1/1/14:  Type : 1G M-C (Gig-Copper)
Port 1/1/15:  Type : 1G M-C (Gig-Copper)
Port 1/1/16:  Type : 1G M-C (Gig-Copper)
Port 1/1/17:  Type : 1G M-C (Gig-Copper)
Port 1/1/18:  Type : 1G M-C (Gig-Copper)
Port 1/1/19:  Type : 1G M-C (Gig-Copper)
Port 1/1/20:  Type : 1G M-C (Gig-Copper)
Port 1/1/21:  Type : 1G M-C (Gig-Copper)
Port 1/1/22:  Type : 1G M-C (Gig-Copper)
Port 1/1/23:  Type : 1G M-C (Gig-Copper)
Port 1/1/24:  Type : 1G M-C (Gig-Copper)
Port 1/1/25:  Type : 1G M-C (Gig-Copper)
Port 1/1/26:  Type : 1G M-C (Gig-Copper)
Port 1/1/27:  Type : 1G M-C (Gig-Copper)
Port 1/1/28:  Type : 1G M-C (Gig-Copper)
Port 1/1/29:  Type : 1G M-C (Gig-Copper)
Port 1/1/30:  Type : 1G M-C (Gig-Copper)
Port 1/1/31:  Type : 1G M-C (Gig-Copper)
Port 1/1/32:  Type : 1G M-C (Gig-Copper)
Port 1/1/33:  Type : 1G M-C (Gig-Copper)
Port 1/1/34:  Type : 1G M-C (Gig-Copper)
Port 1/1/35:  Type : 1G M-C (Gig-Copper)
Port 1/1/36:  Type : 1G M-C (Gig-Copper)
Port 1/1/37:  Type : 1G M-C (Gig-Copper)
Port 1/1/38:  Type : 1G M-C (Gig-Copper)
Port 1/1/39:  Type : 1G M-C (Gig-Copper)
Port 1/1/40:  Type : 1G M-C (Gig-Copper)
Port 1/1/41:  Type : 1G M-C (Gig-Copper)
Port 1/1/42:  Type : 1G M-C (Gig-Copper)
Port 1/1/43:  Type : 1G M-C (Gig-Copper)
Port 1/1/44:  Type : 1G M-C (Gig-Copper)
Port 1/1/45:  Type : 1G M-C (Gig-Copper)
Port 1/1/46:  Type : 1G M-C (Gig-Copper)
Port 1/1/47:  Type : 1G M-C (Gig-Copper)
Port 1/1/48:  Type : 1G M-C (Gig-Copper)
Port 1/2/1:  Type : 10GE Active Twinax   1m (SFP +)
Port 1/2/2:  Type : 10GE Active Twinax   1m (SFP +)
Port 1/2/3:  Type : 10GE Active Twinax   1m (SFP +)
Port 1/2/4:  Type : 10GE Active Twinax   1m (SFP +)
Port 2/1/1:  Type : 1G M-C (Gig-Copper)
Port 2/1/2:  Type : 1G M-C (Gig-Copper)
Port 2/1/3:  Type : 1G M-C (Gig-Copper)
Port 2/1/4:  Type : 1G M-C (Gig-Copper)
Port 2/1/5:  Type : 1G M-C (Gig-Copper)
Port 2/1/6:  Type : 1G M-C (Gig-Copper)
Port 2/1/7:  Type : 1G M-C (Gig-Copper)
Port 2/1/8:  Type : 1G M-C (Gig-Copper)
Port 2/1/9:  Type : 1G M-C (Gig-Copper)
Port 2/1/10:  Type : 1G M-C (Gig-Copper)
Port 2/1/11:  Type : 1G M-C (Gig-Copper)
Port 2/1/12:  Type : 1G M-C (Gig-Copper)
Port 2/1/13:  Type : 1G M-C (Gig-Copper)
Port 2/1/14:  Type : 1G M-C (Gig-Copper)
Port 2/1/15:  Type : 1G M-C (Gig-Copper)
Port 2/1/16:  Type : 1G M-C (Gig-Copper)
Port 2/1/17:  Type : 1G M-C (Gig-Copper)
Port 2/1/18:  Type : 1G M-C (Gig-Copper)
Port 2/1/19:  Type : 1G M-C (Gig-Copper)
Port 2/1/20:  Type : 1G M-C (Gig-Copper)
Port 2/1/21:  Type : 1G M-C (Gig-Copper)
Port 2/1/22:  Type : 1G M-C (Gig-Copper)
Port 2/1/23:  Type : 1G M-C (Gig-Copper)
Port 2/1/24:  Type : 1G M-C (Gig-Copper)
Port 2/1/25:  Type : 1G M-C (Gig-Copper)
Port 2/1/26:  Type : 1G M-C (Gig-Copper)
Port 2/1/27:  Type : 1G M-C (Gig-Copper)
Port 2/1/28:  Type : 1G M-C (Gig-Copper)
Port 2/1/29:  Type : 1G M-C (Gig-Copper)
Port 2/1/30:  Type : 1G M-C (Gig-Copper)
Port 2/1/31:  Type : 1G M-C (Gig-Copper)
Port 2/1/32:  Type : 1G M-C (Gig-Copper)
Port 2/1/33:  Type : 1G M-C (Gig-Copper)
Port 2/1/34:  Type : 1G M-C (Gig-Copper)
Port 2/1/35:  Type : 1G M-C (Gig-Copper)
Port 2/1/36:  Type : 1G M-C (Gig-Copper)
Port 2/1/37:  Type : 1G M-C (Gig-Copper)
Port 2/1/38:  Type : 1G M-C (Gig-Copper)
Port 2/1/39:  Type : 1G M-C (Gig-Copper)
Port 2/1/40:  Type : 1G M-C (Gig-Copper)
Port 2/1/41:  Type : 1G M-C (Gig-Copper)
Port 2/1/42:  Type : 1G M-C (Gig-Copper)
Port 2/1/43:  Type : 1G M-C (Gig-Copper)
Port 2/1/44:  Type : 1G M-C (Gig-Copper)
Port 2/1/45:  Type : 1G M-C (Gig-Copper)
Port 2/1/46:  Type : 1G M-C (Gig-Copper)
Port 2/1/47:  Type : 1G M-C (Gig-Copper)
Port 2/1/48:  Type : 1G M-C (Gig-Copper)
Port 2/2/1:  Type : 10GE Active Twinax   1m (SFP +)
Port 2/2/2:  Type : 10GE Active Twinax   1m (SFP +)
Port 2/2/3:  Type : 10GE Active Twinax   1m (SFP +)
Port 2/2/4:  Type : 10GE Active Twinax   1m (SFP +)


4> show stack stack-ports
Port statistics for all stack-ports.

Port            In Packets          Out Packets       In Errors      Out Errors
1/2/1                 1370                  519               0               0
1/2/2                  595                 1446               0               0
1/2/3                 1451                  567               0               0
1/2/4                  519                 1416               0               0
2/2/1                    0                    0               0               0
2/2/2                    0                    0               0               0
2/2/3                    0                    0               0               0
2/2/4                    0                    0               0               0

TOTAL                 3935                 3948               0               0

5>show stack rel-ipc

Stack IPC Statistics.
Reliable IPC statistics:

Global statistics:
Pkts rcvd w/no session:           0,      Msgs rcvd w/no handler: %         0
Keep-alive timer           05ee4098,      Keep-alive #                8784506

Unit statistics:

Unit 2 statistics:
Msgs sent: 17761125  Msgs received: 28675248, Pkt sends failed: 0

Message types sent:
    [9]=17714249,     [12]=9,           [13]=4,           [15]=46859,      
    [21]=3,           [59]=1,          

Message types received:
    [9]=28675243,     [12]=1,           [13]=2,           [15]=2,          

Session: base-channel, to U2, channel 0
buf size: xmt=1048584, rcv=32776, max msg=10008
State: established (last 508 day(s) 9 hour(s) 17 minute(s) 39 second(s) ago) cnt: 1
Remote resets:                    0,      Reset packets sent:               0
Connection statistics (for current connection, if established):
Msgs sent:                 12281686,      Msgs rcvd:                 28675240
Atomic batches sent:              0,      Atomic batches rcvd:              0
Pkts sent:                 49225734,      Pkts rcvd:                 39627955
Msg bytes sent:           321000512,      Msg bytes rcvd:           118436004
Pkt bytes sent:           140614160,      Pkt bytes rcvd:           258315396
Keepalive sent:             8784490,      Keepalive rcvd:             8784490
Keepalive age:                    0,      Keepalive NBR age :               1
Flushes requested: 1631, Suspends: 0, Resumes: 0
Packets sent with data (DAT), ACKs, and window updates (WND):
Other: 10446154,  ACK:     22019942,  WND:       1801900,  ACK+WND:     19309
DAT:   14716923,  DAT+ACK:   215330,  DAT+WND       6115,  DA+AC+WND       61
Data retransmits done:      2511094,      Zero-window probes sent:          0
Dup ACK pkts rcvd:          1983261,      Pkts rcvd w/dup data:            54
Pkts rcvd w/data past window: 0

Session: image-transfer, to U2, channel 1
buf size: xmt=15368, rcv=15368, max msg=1052
State: established (last 508 day(s) 9 hour(s) 17 minute(s) 36 second(s) ago) cnt: 1
Remote resets:                    0,      Reset packets sent:               0
Connection statistics (for current connection, if established):
Msgs sent:                        0,      Msgs rcvd:                        1
Atomic batches sent:              0,      Atomic batches rcvd:              0
Pkts sent:                  8784556,      Pkts rcvd:                       11
Msg bytes sent:                   0,      Msg bytes rcvd:                   8
Pkt bytes sent:           105508812,      Pkt bytes rcvd:                 144
Keepalive sent:             8784489,      Keepalive rcvd:             8784489
Keepalive age:                    1,      Keepalive NBR age :               1
Flushes requested: 0, Suspends: 0, Resumes: 0
Packets sent with data (DAT), ACKs, and window updates (WND):
Other:  8784490,  ACK:            1,  WND:             0,  ACK+WND:         0
DAT:         65,  DAT+ACK:        0,  DAT+WND          0,  DA+AC+WND        0
Data retransmits done:           64,      Zero-window probes sent:          0
Dup ACK pkts rcvd:                6,      Pkts rcvd w/dup data:             0
Pkts rcvd w/data past window: 0

Session: ACL, to U2, channel 3
buf size: xmt=102408, rcv=32776, max msg=1472
State: established (last 508 day(s) 9 hour(s) 17 minute(s) 39 second(s) ago) cnt: 1
Remote resets:                    0,      Reset packets sent:               0
Connection statistics (for current connection, if established):
Msgs sent:                  5432444,      Msgs rcvd:                        4
Atomic batches sent:              0,      Atomic batches rcvd:              0
Pkts sent:                 15414196,      Pkts rcvd:                  6417623
Msg bytes sent:           117348590,      Msg bytes rcvd:                5664
Pkt bytes sent:           164358895,      Pkt bytes rcvd:            77022964
Keepalive sent:             8784490,      Keepalive rcvd:             8784490

6>show statistics
Port             In Packets       Out Packets       In Errors      Out Errors
1/1/1                    11              7297               0               0
1/1/2                    14              7298               0               0
1/1/3                  8176              6415               0               0
1/1/4               2252685           2077557               0               0
1/1/5                  5226              6532               0               0
1/1/6               2259156           2075034               0               0
1/1/7                    13              7299               0               0
1/1/8                    11              7297               0               0
1/1/9                    14              7297               0               0
1/1/10              1086615           1084224               0               0
1/1/11              1073359           1070328               0               0
1/1/12              1072546           1067630               0               0
1/1/13              1096400           1092858               0               0
1/1/14              1081252           1078597               0               0
1/1/15               972004            968706               0               0
1/1/16              1091781           1088888               0               0
1/1/17              1062311           1060119               0               0
1/1/18               984911            982314               0               0
1/1/19              1130107           1126269               0               0
1/1/20              1188384           1185328               0               0
1/1/21              1105326           1100925               0               0
1/1/22              1429199           1426992               0               0
1/1/23              1392828           1389422               0               0
1/1/24              1116379           1111288               0               0
1/1/25                    0                 0               0               0
1/1/26                    0                 0               0               0
1/1/27                 2451              7641               0               0
1/1/28              2529724           2172382               0               0
1/1/29                10149              7220               0               0
1/1/30              1235062           2073628               0               0
1/1/31                    0              7286               0               0
1/1/32                    0              7285               0               0
1/1/33                    0              7286               0               0
1/1/34              1086603           1084228               0               0
1/1/35              1073354           1071981               0               0
1/1/36              1072552           1071856               0               0
1/1/37              1096316           1095985               0               0
1/1/38              1081210           1079800               0               0
1/1/39               972007            969592               0               0
1/1/40              1091794           1090130               0               0
1/1/41              1062292           1061034               0               0
1/1/42               984915            983945               0               0
1/1/43              1130164           1128059               0               0
1/1/44              1188441           1187810               0               0
1/1/45              1105352           1103770               0               0
1/1/46              1429184           1431086               0               0
1/1/47              1392891           1390305               0               0
1/1/48              1116339           1114779               0               0
1/2/1               7198974           3397392               0               0
1/2/2               3442180           7340072               0               0
1/2/3               7258712           3107853               0               0
1/2/4               3271761           7314237               0               0
2/1/1                    15              7299               0               0
2/1/2                     0                 0               0               0
2/1/3                  3875              6973               0               0
2/1/4               2776323           2174619               0               0
2/1/5                  7677              8996               0               0
2/1/6               1437566           2171984               0               0
2/1/7                    11              7298               0               0
2/1/8                    10              7298               0               0
2/1/9                    12              7299               0               0
2/1/10              1086634           1084335               0               0
2/1/11              1073553           1070518               0               0
2/1/12              1072521           1069722               0               0
2/1/13              1096591           1093576               0               0
2/1/14              1081431           1077212               0               0
2/1/15               972102            970561               0               0
2/1/16              1091873           1087714               0               0
2/1/17              1062343           1059173               0               0
2/1/18               984938            982404               0               0
2/1/19              1130202           1126712               0               0
2/1/20              1188357           1184332               0               0
2/1/21              1105543           1102413               0               0
2/1/22              1431895           1429690               0               0
2/1/23              1393839           1389861               0               0
2/1/24              1116512           1112062               0               0
2/1/25                    0                 0               0               0
2/1/26                    0                 0               0               0
2/1/27                 6027              7927               0               0
2/1/28              2116140           2074953               0               0
2/1/29                 7629              9234               0               0
2/1/30              2167884           2172658               0               0
2/1/31                    0              7290               0               0
2/1/32                    0              7290               0               0
2/1/33                    0              7289               0               0
2/1/34              1086717           1085155               0               0
2/1/35              1073542           1072815               0               0
2/1/36              1072523           1071789               0               0
2/1/37              1096526           1096396               0               0
2/1/38              1081408           1081033               0               0
2/1/39               972109            970778               0               0
2/1/40              1091871           1089908               0               0
2/1/41              1062282           1062794               0               0
2/1/42               984942            984964               0               0
2/1/43              1130137           1128547               0               0
2/1/44              1188344           1187490               0               0
2/1/45              1105523           1103301               0               0
2/1/46              1431863           1430917               0               0
2/1/47              1393812           1393012               0               0
2/1/48              1116463           1115752               0               0
2/2/1               3108671           7260442               0               0
2/2/2               7316239           3273110               0               0
2/2/3               3398236           7200568               0               0
2/2/4               7341952           3443740               0               0
mgmt1                     0                 0               0               0

TOTAL             126705798         126913759               0               0

7> dm statistics
real_transition-transit-sw_reset-discards:
9-0-0-0(1/1/1) 1-0-0-0(1/1/2) 1-0-0-0(1/1/3) 1-0-0-0(1/1/4)
1-0-0-0(1/1/5) 1-0-0-0(1/1/6) 1-0-0-0(1/1/7) 1-0-0-0(1/1/8)
1-0-0-0(1/1/9) 23-0-0-0(1/1/10) 25-0-0-0(1/1/11) 27-0-0-0(1/1/12)
39-0-0-0(1/1/13) 25-0-0-0(1/1/14) 25-0-0-0(1/1/15) 31-0-0-0(1/1/16)
27-0-0-0(1/1/17) 25-0-0-0(1/1/18) 25-0-0-0(1/1/19) 79-0-0-0(1/1/20)
47-0-0-0(1/1/21) 35-0-0-0(1/1/22) 43-0-0-0(1/1/23) 39-0-0-0(1/1/24)
0-0-0-0(1/1/25) 0-0-0-0(1/1/26) 1-0-0-0(1/1/27) 1-0-0-0(1/1/28)
1-0-0-0(1/1/29) 1-0-0-0(1/1/30) 1-0-0-0(1/1/31) 1-0-0-0(1/1/32)
1-0-0-0(1/1/33) 23-0-0-0(1/1/34) 25-0-0-0(1/1/35) 27-0-0-0(1/1/36)
35-0-0-0(1/1/37) 25-0-0-0(1/1/38) 25-0-0-0(1/1/39) 29-0-0-0(1/1/40)
27-0-0-0(1/1/41) 25-0-0-0(1/1/42) 25-0-0-0(1/1/43) 67-0-0-0(1/1/44)
43-0-0-0(1/1/45) 31-0-0-0(1/1/46) 39-0-0-0(1/1/47) 39-0-0-0(1/1/48)
7-0-0-0(1/2/1) 3-0-0-0(1/2/2) 3-0-0-0(1/2/3) 7-0-0-0(1/2/4)
1-0-0-0(2/1/1) 0-0-0-0(2/1/2) 1-0-0-0(2/1/3) 1-0-0-0(2/1/4)
1-0-0-0(2/1/5) 1-0-0-0(2/1/6) 3-0-0-0(2/1/7) 1-0-0-0(2/1/8)
5-0-0-0(2/1/9) 23-0-0-0(2/1/10) 25-0-0-0(2/1/11) 27-0-0-0(2/1/12)
39-0-0-0(2/1/13) 25-0-0-0(2/1/14) 25-0-0-0(2/1/15) 31-0-0-0(2/1/16)
27-0-0-0(2/1/17) 25-0-0-0(2/1/18) 25-0-0-0(2/1/19) 79-0-0-0(2/1/20)
47-0-0-0(2/1/21) 35-0-0-0(2/1/22) 43-0-0-0(2/1/23) 39-0-0-0(2/1/24)
0-0-0-0(2/1/25) 0-0-0-0(2/1/26) 1-0-0-0(2/1/27) 1-0-0-0(2/1/28)
1-0-0-0(2/1/29) 1-0-0-0(2/1/30) 1-0-0-0(2/1/31) 1-0-0-0(2/1/32)
1-0-0-0(2/1/33) 23-0-0-0(2/1/34) 25-0-0-0(2/1/35) 27-0-0-0(2/1/36)
35-0-0-0(2/1/37) 25-0-0-0(2/1/38) 25-0-0-0(2/1/39) 29-0-0-0(2/1/40)
27-0-0-0(2/1/41) 25-0-0-0(2/1/42) 25-0-0-0(2/1/43) 67-0-0-0(2/1/44)
43-0-0-0(2/1/45) 31-0-0-0(2/1/46) 39-0-0-0(2/1/47) 39-0-0-0(2/1/48)
1-0-0-0(2/2/1) 5-0-0-0(2/2/2) 3-0-0-0(2/2/3) 1-0-0-0(2/2/4)

[jijo_panangat]

Hello Manish, Please check the end to end transit path for any congestion/over utilisation of links, packet drops etc. These are some potential factors and could lead to re-transmission, I would suggest you to open a tac case for further assistance if needed.