遠(yuǎn)端模塊流量沒(méi)有按照預(yù)期轉(zhuǎn)發(fā)的解決方法

遠(yuǎn)端模塊流量沒(méi)有按照預(yù)期轉(zhuǎn)發(fā)，比如中心交換機(jī)收不到遠(yuǎn)端模塊下掛終端轉(zhuǎn)發(fā)過(guò)來(lái)的流量，或者遠(yuǎn)端模塊下掛終端收不到流量。

步驟 1根據(jù)流量轉(zhuǎn)發(fā)路徑，分別查看對(duì)應(yīng)路徑上的下行口、上行口、互聯(lián)口狀態(tài)和報(bào)文計(jì)數(shù)，確定故障點(diǎn)。

1. 例如流量從中心交換機(jī)轉(zhuǎn)至遠(yuǎn)端模塊，先檢查中心交換機(jī)與遠(yuǎn)端模塊互連口的端口狀態(tài)與報(bào)文在出入方向的計(jì)數(shù)。例如，互聯(lián)口是Eth-Trunk 1。 display interface Eth-Trunk 1
   Eth-Trunk2 current state : UP
   Line protocol current state : UP
   Description:
   Switch Port, Link-type : trunk(configured),
   PVID : 1, Hash arithmetic : Accordingto SIP-XOR-DIP,Maximal BW: 2G, Current BW: 2G, The Maximum Frame Length is9216
   IP Sending Frames' Format is PKTFMT_ETHNT_2, Hardware address is500b-0990-4444
   Current system time: 2022-04-14 1830
   Last 10 seconds input rate 904 bits/sec, 0 packets/sec
   Last 10 seconds output rate 576 bits/sec, 0 packets/sec
   Input:214 packets, 45417 bytes
   Unicast:0, Multicast: 184
   Broadcast:30, Jumbo:0
   Discard:0, Pause:0
   Frames:0
   
   Total Error:0
   CRC:0, Giants:0
   Runts:0, DropEvents:0
   Alignments:0, Symbols:0
   Ignoreds:0
   
   Output:168588 packets, 24951240 bytes
   Unicast:168453, Multicast:67
   Broadcast:68, Jumbo:0
   Discard:0, Pause:0
   
   Total Error:0
   Collisions:0, Late Collisions:0
   Deferreds:0
   
   Input bandwidth utilization:0%
   Output bandwidth utilization: 0%
   --------------------------------------------------
   PortName Status Weight
   --------------------------------------------------
   GigabitEthernet0/0/26 UP 1
   GigabitEthernet0/0/27 UP 1
   --------------------------------------------------
   The Number of Ports in Trunk : 2
   The Number of UP Ports in Trunk : 2

2. 檢查遠(yuǎn)端模塊上行口與下行口端口狀態(tài)與計(jì)數(shù)，以此確認(rèn)故障點(diǎn)。如下，遠(yuǎn)端模塊上行口是port 5、port 6，下行口是port 3。

   # 查看遠(yuǎn)端模塊接口的簡(jiǎn)要信息，確認(rèn)上下行端口。 displayremote-unit port brief
   ESN :219801176801XXXXXXXX
   Name:runame-012345678901234567890000
   Device type :S5731-L4T2ST-RUA
   Connect interface :Eth-Trunk1
   ---------------------------------------------------
   Interface PHY Negotiation Duplex Mode Speed(Mbps)NeighborInterface
   ---------------------------------------------------
   GE1 DownEnable FullCopper1000 -
   GE2 DownEnableFullCopper1000 -
   GE3 Up Enable Full Copper1000-
   GE4Down EnableFullCopper1000 -
   GE5 UpEnable FullCopper1000 GE0/0/26
   GE6 UpEnableFullFiber 1000 GE0/0/27
   ---------------------------------------------------
   # 查看遠(yuǎn)端模塊端口的流量統(tǒng)計(jì)，如下為port 5查詢，port 6和port 3查詢方法一樣。display remote-unit port 5 statistics connect-interface Eth-Trunk 1
   ESN:219801176801XXXXXXXX
   Name:runame-012345678901234567890000
   Device type :S5731-L4T2ST-RUA
   Connect interface :Eth-Trunk1
   ----------------------------------------------------
   GE5 current state : UP
   Speed: 1000, Duplex: Full, Negotiation: Enable, Mode: Copper,Congestion: No
   Input rate 0 bits/sec, 0 packets/sec
   Output rate 0 bits/sec, 0 packets/sec
   
   Input: 0 packets, 0 bytes
   Unicast: 0, Multicast: 0
   Broadcast: 0, Jumbo: 0
   Discard: 0,Pause:0
   Frames: 0
   
   Total Error:0
   CRC: 0, Giants: 0
   Runts: 0, DropEvents:0
   Alignments:0, Symbols:0
   Ignoreds:0
   
   Output : 168571 packets, 24951014 bytes
   Unicast:168453, Multicast: 81
   Broadcast:37, Jumbo:0
   Discard: 0, Pause: 0
   
   Total Error: 0
   Collisions: 0,Late Collisions: 0
   Deferreds: 0
   
   Input bandwidth utilization threshold: 80.00%
   Output bandwidth utilizationthreshold: 80.00%
   Last 60 seconds input utility rate :0.00%
   Last 60 seconds output utility rate:0.00%
   
   -----------------------------------------

根據(jù)回顯確認(rèn)遠(yuǎn)端模塊流量異常端口，比如中心交換機(jī)互聯(lián)口的入方向流量要等于遠(yuǎn)端模塊上行口出方向的流量，如果不相等，根據(jù)查詢結(jié)果回顯的流量統(tǒng)計(jì)，初步判斷報(bào)文在哪里丟了，可確認(rèn)故障端口。

步驟 2在中心交換機(jī)上查看FMEA相關(guān)告警，是否存在遠(yuǎn)端模塊PHY芯片故障等。

1. 如果異常的PHY芯片對(duì)應(yīng)的接口狀態(tài)是UP的，設(shè)備會(huì)自動(dòng)復(fù)位，復(fù)位后查看接口能否正常收發(fā)報(bào)文。如果不能正常收發(fā)報(bào)文，說(shuō)明是PHY芯片故障，請(qǐng)更換該設(shè)備。# 查看遠(yuǎn)端模塊接口的簡(jiǎn)要信息，確認(rèn)端口的PHY狀態(tài)。如下，port3連接終端，PHY的狀態(tài)是UP，如果設(shè)備上存在這個(gè)告警：hwRuPhyStatAbnormal，則設(shè)備會(huì)自動(dòng)復(fù)位，復(fù)位后查看接口能否正常收發(fā)報(bào)文。 display remote-unit port brief
   ESN:219801176801XXXXXXXX
   Name:runame-012345678901234567890000
   Device type :S5731-L4T2ST-RUA
   Connect interface :Eth-Trunk1
   --------------------------------------------------------------------------------------------
   Interface PHY Negotiation DuplexMode Speed(Mbps) NeighborInterface
   --------------------------------------------------------------------------------------------
   GE1 Down Enable Full Copper1000 -
   GE2 Down Enable Full Copper1000 -
   GE3 Up Enable Full Copper1000 -
   GE4 Down Enable Full Copper1000 -
   GE5 Up Enable Full Copper1000 GE0/0/26
   GE6 Up Enable Full Fiber1000 GE0/0/27
   --------------------------------------------------------------------------------------------

2. 如果異常的PHY芯片對(duì)應(yīng)的接口狀態(tài)是LINK DOWN的，設(shè)備不會(huì)自動(dòng)復(fù)位。如果用戶不使用該接口，可以不處理。如果用戶要使用該接口，可執(zhí)行reboot命令復(fù)位遠(yuǎn)端模塊，復(fù)位后查看接口能否正常收發(fā)報(bào)文。

1. 遠(yuǎn)端模塊端口內(nèi)部環(huán)回檢測(cè)。# 比如：配置遠(yuǎn)端模塊0的2號(hào)端口內(nèi)部環(huán)回檢查，可檢測(cè)遠(yuǎn)端模塊內(nèi)部轉(zhuǎn)發(fā)芯片是否工作正常。loopbacktest internal port下發(fā)時(shí)，提示Error: Failed to set loopback test, error message:*** 說(shuō)明內(nèi)部環(huán)回檢查失敗，端口存在問(wèn)題，需要收集信息定位。Info: Setting the internal loopback test on the port of the remote unit succeeded.表示內(nèi)部環(huán)回檢成功，內(nèi)部轉(zhuǎn)發(fā)芯片工作正常。 system-view
   [HUAWEI] remote-unit 0
   [HUAWEI-remote-unit-0] loopbacktestinternal port 2
   Info: This operation will take several seconds. Pleasewait.................
   Info: Setting the internal loopback test on the port of the remote unitsucceeded.
2. 復(fù)位遠(yuǎn)端模塊端口。# 如果遠(yuǎn)端模塊0的1號(hào)端口狀態(tài)或計(jì)數(shù)有故障，可復(fù)位遠(yuǎn)端模塊1號(hào)端口嘗試恢復(fù)。

   [HUAWEI-remote-unit-0] restart port 1

   [HUAWEI-remote-unit-0] quit

1. 遠(yuǎn)端模塊的上行接口默認(rèn)加入Eth-Trunk，檢查上行口是否連接同一中心交換機(jī)。如果連接到兩個(gè)中心交換機(jī)會(huì)導(dǎo)致流量轉(zhuǎn)發(fā)異常。
2. 遠(yuǎn)端模塊雙上行到中心交換機(jī)，檢查中心交換機(jī)對(duì)應(yīng)的兩個(gè)下行口是否加入同一個(gè)Eth-Trunk。如果未加入到同一個(gè)Eth-Trunk組，則會(huì)有鏈路異常的告警，并且Error-Down端口。

[HUAWEI] error-down auto-recovery cause remote-unit-link interval 30
[HUAWEI] error-down auto-recovery cause remote-unit-misconfig interval 30

步驟 5請(qǐng)收集日志信息和配置信息，并聯(lián)系技術(shù)支持人員。設(shè)備診斷信息可以通過(guò)display diagnostic-information命令收集。

原理描述

遠(yuǎn)端模塊設(shè)備不支持部署VLAN，接收到的報(bào)文默認(rèn)加一層透?jìng)鱐AG，再根據(jù)VLAN tag里的VLAN ID在MAC地址表里查找對(duì)應(yīng)的出接口，報(bào)文在出端口將透?jìng)鱐AG剝離。

配置隔離后，下掛終端的三層流量互通，需要在網(wǎng)關(guān)配置ARP代理。