Beta Draft Confidential
7-241/19/05 ATM Services Configuration Guide for CBX 3500, CBX 500, GX 550, and B-STDX 9000
Configuring Trunks
Working With Trunks
10. (Optional) If you plan to use the B-STDX 9000 trunk backup feature, continue
with the instructions in “Using B-STDX 9000 Trunk Backup” on page 7-25.
11. When you finish defining the trunk attributes, choose OK to complete the trunk
configuration.
Enable IP
Routing
Enable IP routing for the trunk by selecting the check box. If disabled
(unchecked), the trunk is reserved for use by VNN. Also activates the
Trunk IP Area ID and Type of Service (ToS) Zero Metric fields. See the
IP Services Configuration Guide for CBX 3500, CBX 500, and
B-STDX 9000 for more information.
Trunk IP Area
ID
The OSPF Area ID used by IP Services. See the IP Services
Configuration Guide for CBX 3500, CBX 500, and B-STDX 9000 for
more information.
TOS Zero Metric
(End 1)
Enter a value between 1 and 65535. This value specifies the type of
service cost for Endpoint 1 of the trunk. The lowest ToS zero metric has
the highest priority for routing.
TOS Zero Metric
(End 2)
Enter a value between 1 and 65535. This value specifies the ToS cost
for Endpoint 2 of the trunk. The lowest ToS zero metric has the highest
priority for routing.
Static Delay (in
microsec)
Represents the measured one-way delay in units of 100 microseconds.
This measurement is taken when the trunk initializes and it is only
updated when the trunk state changes from Down to Up. The static
delay value is used in conjunction with the end-to-end delay routing
metric to enable you to route circuits over trunks with the lowest
end-to-end delay. To modify the Static Delay value, see page 7-4.
Note: Modifying the value for this attribute does not bring down the
trunk or its associated logical port.
Dynamic Delay
(in microsec)
Represents the measured one-way delay in units of 100 microseconds.
This measurement is made continually on operational trunks. Under
most conditions, the dynamic delay value will match the static delay
value. However, if some characteristics of the underlying transmission
media for the trunk change such that the dynamic delay changes, this
value may differ from the static delay.
Table 7-3. Add Trunk: Administrative Tab Fields (Continued)
Field Action/Description
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