Beta Draft Confidential
7-14
1/19/05
ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring Trunks
About APS
Logical Port Provisioning
You provision Fast APS 1+1 on the logical port as follows:
•
Direct Trunks — Configure a direct trunk logical port at each trunk endpoint (for
a total of 2 logical ports). (The protection logical ports are automatically
configured.)
•
PNNI Links — Configure one ATM NNI logical port (including PNNI
parameters) on the GX 550 Multiservice WAN switch. (The protection logical
port is automatically configured.)
Trunk Provisioning
You provision Fast APS 1+1 on the trunk as follows:
•
Direct Trunks — Select the working endpoints from the Select Trunk Endpoints
dialog box. The Fast APS 1+1 trunk is created between these two endpoints. (The
protection endpoints are automatically configured with the appropriate values.)
See
“Configuring APS Trunk Backup and Fast APS 1+1 for ATM Direct Trunks”
for more information.
•
PNNI Links — PNNI links are automatically activated when you create an ATM
NNI logical Port and configure PNNI parameters at either end of the link
connection. (You do not need to manually select connection endpoints.) When the
working link is activated, the protection endpoints are automatically configured
with the appropriate values.
See
“Configuring Fast APS 1+1 for PNNI Links” on page 7-36
for more
information.
Note – See
Chapter 3, “Configuring CBX or GX Logical Ports”
for more information
about configuring these logical port types on CBX 500 and GX 550 switches.
Note – When an APS-enabled PPort is forced down by using the Admin Down
command, all APS switchover requests will be deferred until an Admin Up command
is issued on that PPort. Before using Admin Down, force a switchover to the working
or protection port, using the APS Command option. Following the maintenance on the
port, use the Admin Up command to bring the PPort back up. Finally, clear the issued
APS Command to remove the forced switchover condition.
For more information on the APS Command, see “Chapter 11, Configuring Automatic
Protection Switching (CBX and GX)” in the Switch Module Configuration Guide
for
CBX 3500, CBX 500, GX 550, and B-STDX 9000
.
Summary of Contents for CBX 3500
Page 888: ......