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T4000 Switch Interface Board (SIB) Description

 

SIBs create the switch fabric for the T4000 Core Router. Each T4000 router contains five SIBs, located at the center rear of the chassis in the slots labeled SIB0 through SIB4 (top to bottom). One of the five SIBs acts as a backup to the remaining four SIBs. If a SIB fails, the backup SIB becomes active, and traffic forwarding continues without any degradation. When the failed SIB is replaced, it becomes the new backup. SIBs are hot-insertable and hot-removable.

The T4000 router supports the SIB listed in Table 1.

Table 1: T4000 Supported SIB

Name

Model Number

First Supported Junos OS Release

T4000-SIB

Note: This SIB is required for a standalone T4000 router.

SIB-I-T4000

12.1

TXP-LCC-3D SIB

Note: This SIB is required for a T4000 line-card chassis connected to a TX Matrix Plus Router.

SIB-TXP-3D-LCC

13.1