Lexmark IBM 9077 manual ATM OC-3c Configuration, Physical and Logical ATM Interfaces

you see the output for all eight. The input port side is reported on first.

maint 5 -to return GRF switch statistics.

maint 7 -to clear the current collected statistics.

maint 8 -to display the ARP table for one interface or, if no interface is specified, for all interfaces.

4.2 ATM OC-3c Configuration

This section provides information needed to configure the ATM OC-3c media card. The GRF can be configured in point-to-point or point-to-multipoint ATM topologies with either switches or hosts. The OC-3c media card provides two independent physical ATM interfaces, each of which supports 110 logical interfaces and operates at 155Mbit/s full duplex.

4.2.1 Physical and Logical ATM Interfaces

Figure 37 shows the organization of physical and logical ATM interfaces on the ATM OC-3c media card.

	Logical Interfaces	VPI	VCI	Total # of active VCs
Physical Interface 0
		0	0-32767
(top)	0-7f (range)			512
		1-15	0-511
Physical Interface 1	80-ff (range)	0	0-32767	512
(bottom)		1-15	0-511
	220/card			1024/card

Figure 37. ATM OC-3c Physical and Logical Interfaces

Physical Interfaces

The ATM OC-3c media card supports two physical interfaces, each of which supports the assignment of 110 logical interfaces out of a range of 128.

Logical Interfaces

Logical interfaces provide a simple way of mapping many IP addresses onto a single ATM port. A logical interface serves as the connection between ATM and IP. Each logical interface is assigned a unique IP address in grifconfig.conf. All interface names are case sensitive. Always use lower case letters when defining interface names.

110IBM 9077 SP Switch Router: Get Connected to the SP Switch