IBM Switch 9077 - Manual (Page 138)

120 IBM 9077 SP Switch Router: Get Connected to the SP Switch
Figure 40. ATM OC-12c Physical and Logical Interfaces
Physical Interfaces
The ATM OC-12c media card supports one physical interface. It supports the
assignment of 220 logical interfaces out of a range of 256.
Virtual Circuits
The ATM OC-12c media card supports up to 1408 active VCs.
Virtual Paths
VPIs 0 through 3 are available for configuration use.
VCIs
On VPI 0, VCI 0 through VCI 1023 can be used; on VPIs 1-3, VCI 0 through
VCI 127 can be used.
Note: Virtual circuits 0-31 on each VPI are reserved for signaling.
4.3.2 Installing Configurations or Changes
In the command line interface (CLI), use set and write commands to install
configuration parameters.
To save the /etc configuration directory, use grwrite -v .
Additionally, when you enter configuration information or make changes, you
must also reset the media card with the command
grreset for
the change to take place.
4.3.3 Configuration Files and Profiles
The following steps to configure an ATM OC-12c card are the minimum
subset required to successfully bring up a connection. See Section 4.2.3,
“Configuration Files and Profiles” on page 113 up to Section 4.2.6,
“Configuring PVCs” on page 115, and refer to
GRF Configuration Guide 1.4,
GA22-7366 .
Proceed as follows:
Physical Interface 0
(center)
Logical Interfaces Total # of active VCs VPI VCI
0-ff (range) 1408
0-1024
0-127 0
1-3