Beta Draft Confidential
10-41/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring ATM PVCs
PVC Endpoint Rules
PVC Endpoint Rules
Table 10-1 can help you determine calling and called endpoints on the switch and 
endpoint 1 and endpoint 2 in the NMS when PVCs are created. 
Table 10-1. PVC Endpoint Rules
PVC Type Switch NMS Task
Both circuit endpoints 
are fixed
a
 
(Point-to-point PVC)
1. Higher switch IP 
address is always the 
caller.
2. If both endpoints are 
on the same switch, the 
higher interface number 
is the caller.
1. Higher IP address is 
always endpoint 1 on NMS.
2. If both endpoints are on the 
same switch, then higher 
interface number is always 
endpoint 2 on NMS.
1. See the View PVC dialog box 
(described in the Switch Diagnostics 
User’s Guide for CBX 3500, CBX 
500, GX 550, and B-STDX 9000).
2. Use the 
show ospf names 
command to find the interface 
number. 
First endpoint is fixed
a
 
while second endpoint is 
variable
b
 and primary
c
Fixed endpoint is always 
the caller.
Fixed endpoint is always 
designated endpoint 2 in 
NMS.
See the View PVC dialog box in 
Navis EMS-CBGX (described in 
chapter 11 of the Switch Diagnostics 
User’s Guide for CBX 3500, CBX 
500, GX 550, and B-STDX 9000).
First endpoint is variable 
and primary while 
second endpoint is fixed
Fixed endpoint is always 
the caller.
Fixed endpoint is always 
designated endpoint 2 in 
NMS.
See the View PVC dialog box in 
Navis EMS-CBGX (described in the 
Switch Diagnostics User’s Guide for 
CBX 3500, CBX 500, GX 550, and 
B-STDX 9000). 
Both endpoints are 
variable and primary
Higher Service Name 
Binding (SNB) ID is 
always the caller.
Higher SNB ID is designated 
as endpoint 2 in NMS.
Use the Cvlistcontained 
command in Provisioning Server to 
find the SNB ID. 
First endpoint is variable 
and primary while 
second endpoint is 
backed-up
d
Higher variable (SNB) 
is always the caller 
(even if backed up).
Backed-up endpoint is always 
designated endpoint 1 in 
NMS.
For the switch, use the 
Cvlistcontained command in 
Provisioning Server to find the SNB 
ID. 
For the NMS, see the View PVC 
dialog box (described in the Switch 
Diagnostics User’s Guide for CBX 
3500, CBX 500, GX 550, and 
B-STDX 9000).
First endpoint is backed- 
up while second 
endpoint is variable and 
primary
Sets whatever 
configuration that is 
given from Navis 
EMS-CBGX.
Backed-up endpoint is always 
designated endpoint 1 in 
NMS.
See the View PVC dialog box in 
Navis EMS-CBGX (described in 
chapter 11 of the Switch Diagnostics 
User’s Guide for CBX 3500, CBX 
500, GX 550, and B-STDX 9000).
a
Fixed refers to endpoints that do not have an SNB configured.
b
Variable refers to an endpoint with an SNB on the primary interface.
c
Primary refers to an endpoint that is the primary logical port for an SNB.
d
Backed-up refers to endpoints where a backup logical port is active for an SNB.