Juniper MX960 - SCB-MX Fabric Plane Scale and Redundancy

Table 76: SCB-MX LED Descriptions
DescriptionStateColorLabel
Fabric is in active mode.On
steadily
GreenFABRIC
ACTIVE
SCB-MX operates in fabric-only mode.On
steadily
GreenFABRIC
ONLY
SCB-MX operates in fabric/control board mode.Off–
SCB-MX is online.On
steadily
GreenOK/FAIL
SCB-MX has failed.On
steadily
Red
SCB-MX is offline.Off–
SCB-MX Fabric Plane Scale and Redundancy
Each of the fabric planes on the SCB-MX is able to process 20 Gbps of bandwidth. The MX240 and MX480
use eight fabric planes across two SCB-MXs, whereas the MX960 uses six fabric planes across three
SCB-MX’s˙. Because of the fabric plane virtualization, the aggregate fabric bandwidth between the MX240,
MX480, and MX960 is different. Refer to Table 77 on page 172.
Table 77: SCB-MX Fabric Plane Scale and Redundancy Assuming Four PFEs per FPC
MX960MX480MX240SCB-MX
482412PFEs
322SCBs
644Switch Fabrics
688Fabric Planes
2 (2+1 SCB-MX
redundancy)
4 (1+1 SCB-MX
redundancy)
4 (1+1 SCB-MX
redundancy)
Spare Planes
120 Gbps160 Gbps160 GbpsFabric Bandwidth Per Slot
172