网络工程 - 在瞻博网络 MX480 中添加新 FPC 后，CB 结构链路需要升级/培训 - 吾爱随笔录

我们正在运行一个 Juniper MX480 路由器是一个生产环境。由于流量趋势增加，需要在MX480 的插槽 5 中安装新的 FPC ' MPC-3D-16XGE-SFPP '。在添加之前，下面是安装了 4 个 FPC 的状态。

user@Juniper-MX480-BB1> show chassis fpc 
                     Temp  CPU Utilization (%)   CPU Utilization (%)  Memory    Utilization (%)
Slot State            (C)  Total  Interrupt      1min   5min   15min  DRAM (MB) Heap     Buffer
  0  Online            46     24          1       23     23     23    2048       24         24
  1  Online            50     33          3       34     35     35    2048       38         39
  2  Online            47     24          0       22     22     22    2048       23         23
  3  Empty           
  4  Online            47     22          1       22     22     21    2048       26         22

但是，当 FPC 安装在插槽 5 机箱中时，出现严重程度为“严重”的警报。

user@Juniper-MX480-BB1> show chassis alarms 
1 alarms currently active
Alarm time               Class  Description
2021-03-13 03:07:20 PKT  Major  CB fabric links require upgrade/training

该报警显示一段时间后消失。5号槽的新FPC也上线了。

user@Juniper-MX480-BB1> show chassis fpc 
                     Temp  CPU Utilization (%)   CPU Utilization (%)  Memory    Utilization (%)
Slot State            (C)  Total  Interrupt      1min   5min   15min  DRAM (MB) Heap     Buffer
  0  Online            46     23          1       23     22     22    2048       24         24
  1  Online            50     35          3       36     35     35    2048       38         39
  2  Online            48     24          0       23     23     22    2048       23         23
  3  Empty           
  4  Online            47     22          1       25     22     22    2048       26         22
  5  Online            48     23          0       22     24     24    2048       27         21

需要了解为什么当 Juniper MX480 支持 6 x FPC 并且插槽位置 3 中还有一个 FPC 的空位时会出现此警报。

它与“面料”有关吗？如果是这样，如何？我们目前在冗余结构模式下运行 MX480。

我们是否需要将模式从冗余模式更改为增加带宽模式？它是强制性的吗？

既然FPC是在线的，不改变Fabric Mode会有什么影响呢？

user@Juniper-MX480-BB1> show chassis fabric redundancy-mode 
Fabric redundancy mode: Redundant Fabric


user@Juniper-MX480-BB1> show chassis fabric summary 
Plane   State    Uptime
 0      Online   3 days, 11 hours, 9 minutes, 19 seconds
 1      Online   3 days, 11 hours, 9 minutes, 19 seconds
 2      Online   3 days, 11 hours, 9 minutes, 12 seconds
 3      Online   3 days, 11 hours, 9 minutes, 12 seconds
 4      Spare    3 days, 11 hours, 9 minutes, 6 seconds
 5      Spare    3 days, 11 hours, 9 minutes, 5 seconds
 6      Spare    3 days, 11 hours, 8 minutes, 59 seconds
 7      Spare    3 days, 11 hours, 8 minutes, 59 seconds

机箱硬件

 user@Juniper-MX480-BB1> show chassis hardware clei-models 
Hardware inventory:
Item             Version  Part number  CLEI code         FRU model number
Midplane         REV 05   710-017414                     CHAS-BP-MX480-S
FPM Board        REV 02   710-017254                     CRAFT-MX480-S
PEM 0            Rev 05   740-027736                     PWR-MX480-2400-DC-S
PEM 1            Rev 05   740-027736                     PWR-MX480-2400-DC-S
PEM 2            Rev 05   740-027736                     PWR-MX480-2400-DC-S
PEM 3            Rev 05   740-027736                     PWR-MX480-2400-DC-S
Routing Engine 0 REV 07   740-031116   COUCALDBAB        RE-S-1800X4-16G-S
Routing Engine 1 REV 07   740-031116   COUCALDBAB        RE-S-1800X4-16G-S
CB 0             REV 14   750-031391   COUCARCBAA        SCBE-MX-S
CB 1             REV 15   750-031391   COUCARCBAA        SCBE-MX-S
FPC 0            REV 24   750-031088   COUIBBEBAB        MX-MPC2-3D-Q
  MIC 0          REV 26   750-028392   COUIA15BAA        MIC-3D-20GE-SFP
  MIC 1          REV 26   750-028392   COUIA15BAA        MIC-3D-20GE-SFP
FPC 1            REV 24   750-031088   COUIBBEBAB        MX-MPC2-3D-Q
  MIC 0          REV 28   750-028387   COUIA16BAA        MIC-3D-4XGE-XFP
  MIC 1          REV 26   750-028392   COUIA15BAA        MIC-3D-20GE-SFP
FPC 2            REV 26   750-031089   COUIBBDBAB        MX-MPC2-3D
  MIC 0          REV 28   750-028387   COUIA16BAA        MIC-3D-4XGE-XFP
  MIC 1          REV 31   750-028387   COUIA16BAB        MIC-3D-4XGE-XFP
FPC 4            REV 15   750-031088   COUIA18BAA        MX-MPC2-3D-Q
  MIC 1          REV 31   750-028387   COUIA16BAB        MIC-3D-4XGE-XFP
FPC 5            REV 38   750-028467                     MPC-3D-16XGE-SFPP
Fan Tray                                                 FFANTRAY-MX480-HC-S

如果有人能详细解释这一点，我将不胜感激。