T320 Standard Control Board Description

• 10/100Base-T/TX Ethernet switch for intermodule communication.
• PCI bus to the Routing Engines.
• Switch processor mezzanine board (SPMB).

Figure 1: T320 Standard Control Board

• Three LEDs that indicate the status of the control board. T320 Standard Control Board and T-CB LEDs describes the functions of the control board LEDs.
• The control board online/offline button. This button is not functional.
• One Ethernet port. This port is not used in a T320 router.