Tag Switching 9-33
addshelf
Description for Interface Shelves
An interface shelf can be one of the following:
• An MGX 8220 connected to a BPX node
• An IPX or IGX node connected to a BPX node that serves as a hub for the IPX/AF or IGX/AF.
• An IGX node connected to an IGX routing node that serves as a hub for the IGX/AF
The signaling protocol that applies to the trunk on an interface shelf is Annex G.
Each IPX/AF, IGX/AF, or MGX 8220 has one trunk that connects to the BPX or IGX node serving
as an access hub. A BPX hub can support up to 16 T3 trunks to the interface shelves. An IGX hub
can support up to 4 trunks to the interface shelves.
Before it can carry traffic, the trunk on an interface shelf must be “upped” (using uptrk) on both the
interface shelf and the hub node and “added” to the network (using addshelf). Also, a trunk must be
free of major alarms before you can add it with the addshelf command.
Interface Shelf Parameters-addshelf
Example for Interface Shelves
Add an MGX 8220 at trunk 11.1. After you add the shelf, the screen displays a confirmation message
and the name of the shelf. Add the MGX 8220 (may be referred to in screen as AXIX) as follows:
addshelf 11.1 a
The sample display shows the partial execution of the command with the prompt requesting that the
I/F type be entered:
Sample Display:
n4 TN SuperUser BPX 15 9.1 Apr. 4 1998 16:40 PST
BPX Interface Shelf Information
Trunk Name Type Alarm
1.3 AXIS240 AXIS OK
11.2 A242 AXIS OK
This Command: addshelf 11.1
Enter Interface Shelf Type: I (IPX/AF), A (AXIS)
Parameter Description
slot.port slot.port,
Specifies the slot and port number of the trunk
shelf type I or A,
On a BPX node, shelf type specifies the type of interface shelf when you execute
addshelf. The choices are I for IPX/AF or IGX/AF or A for the MGX 8220. On an
IGX hub, only the IGX/AF is possible, so shelf type does not appear.
vpi vci Specifies the vpi and vci (Annex G vpi and vci used). For the MGX 8220 only, the
valid range for vpi is 5–14 and for vci is 16 –271. For an IPX/AF interface shelf, the
valid range for both vpi and vci is 1–255.
