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SCC and LCC Interfaces

In certain statements and commands in the CLI, you refer to the TX Matrix chassis as scc and to a T640 chassis as lcc. You can configure the TX Matrix chassis and T640 chassis by including statements at the [edit chassis] and [edit chassis lcc lcc-number] hierarchy levels, where lcc-number is the chassis identifier (ID) of the T640 router.

Operational commands that reference chassis hardware components—such as SIBs, FPCs, and PICs—require you to specify either scc or lcc, followed by the chassis ID. For example, to display a list of all hardware components in T640  2 (lcc 2), issue the show chassis hardware command as follows:

lcc2-re0:
--------------------------------------------------------------------------
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                65745             T640
Midplane         REV 03   710-005608   RA1400            T640 Backplane
FPM GBUS         REV 09   710-002901   RA3317            T640 FPM Board
FPM Display      REV 05   710-002897   RA3249            FPM Display
CIP              REV 06   710-002895   HS0716            T-series CIP
PEM 0            Rev 11   740-002595   PM18581           Power Entry Module
PEM 1            Rev 11   740-002595   PM18582           Power Entry Module
SCG 0            REV 11   710-003423   HR9871            T640 Sonet Clock Gen.
Routing Engine 0 REV 03   740-008883   211123900250      RE-4.0 (RE-1600)
Routing Engine 1 REV 03   740-008883   211123900201      RE-4.0 (RE-1600)
...

For more information about the TX Matrix platform CLI, see the Junos Feature Guide. For more information about operational mode commands, see the Junos OS command references.

You configure a T640 chassis ID by setting a physical switch on each T-CB faceplate in the T640 router (see T-CB). A chassis ID must be from 0 through 3. You must follow these requirements when setting the T-CB ID switches:

• Both T-CBs in a T640 router must have the same switch setting.
• The switch settings within a T640 router must be unique within the routing matrix.
• When you integrate an operational T640 router with the TX Matrix platform, you must assign a chassis ID of 0 to the router. For more information, see Overview of Integrating an Operational T640 Router with the TX Matrix Router.
• Do not assign a chassis ID greater than 3.

Note: The T640 chassis IDs in a routing matrix do not need to be contiguous.

FPC Interfaces

When you specify an FPC in an interface name and within certain commands, the T640 router that contains that FPC is implicit. Table 1 shows the correspondence between the FPC hardware slot numbers in T640 routers and the FPC assignments recognized by a routing matrix.

For example, in a routing matrix that contains LCC0 through LCC2, so-20/0/1 refers to FPC slot 4 of LCC2.

Note: If the LCC chassis ID is specified in a command, the FPC slot range is always 0 through 7.