2 atm oc-3c configuration, 1 physical and logical atm interfaces – Lexmark IBM 9077 User Manual

Page 128

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110

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

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.

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.

220/card

1024/card

Physical Interface 1

(bottom)

80-ff (range)

512

0-32767
0-511

0
1-15

Physical Interface 0

(top)

Logical Interfaces

Total # of active VCs

VPI

VCI

0-7f (range)

512

0-32767
0-511

0
1-15

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