Cisco OL-21636-01 - Manual (Page 107)

6-5
Cisco IP Solution Center L2VPN and Carrier Ethernet User Guide, 6.0
OL-21636-01
Chapter 6 Managing a FlexUNI/EVC ATM-Ethernet Interworking Service Request
Setting the Service Request Details
If you do not check this check box, you will be prompted to provide the ID in the VC ID field, as covered
in the next step.
When AutoPick VC ID is checked, ISC allocates a VC ID for pseudowires from the ISC-managed VC
ID resource pool. In this case, the text field for the VC ID option is non-editable.
Step 5 If AutoPick VC ID was unchecked, enter a VC ID in the VC ID field.
Usage notes:
• The AutoPick VC ID attribute appears during the creation of a FlexUNI/EVC pseudowire service
request.
• The VC ID value must be an integer value corresponding to a VC ID.
• When a VC ID is manually allocated, ISC verifies the VC ID to see if it lies within ISC’s VC ID
pool. If the VC ID is in the pool but not allocated, the VC ID is allocated to the service request. If
the VC ID is in the pool and is already in use, ISC prompts you to allocate a different VC ID. If the
VC ID lies outside of the ISC VC ID pool, ISC does not perform any verification about whether or
not the VC ID allocated. The operator must ensure the VC ID is available.
• The VC ID can be entered only while creating a service. If you are editing the service request, the
VC ID field is not editable.
Step 6 Check the Configure Bridge Domain check box to determine bridge domain characteristics.
The behavior of the Configure Bridge Domain option works in tandem with the choice you selected in
the MPLS Core Connectivity Type option in the FlexUNI/EVC policy, which in this case is pseudowire
core connectivity. There are two cases:
• With FlexUNI:
– If Configure With Bridge Domain is checked, the policy will configure pseudowires under
SVIs associated to the bridge domain.
– If Configure With Bridge Domain is unchecked, the policy will configure pseudowires
directly under the service instance. This will conserve the global VLAN.
• Without FlexUNI:
– If Configure With Bridge Domain is checked, the policy will configure pseudowires under
SVIs.
– If Configure With Bridge Domain is unchecked, the policy will configure pseudowires
directly under subinterfaces.
Pseudowires can be configured either directly under service instance of the corresponding
FlexUNI-capable interface or under SVIs associated to the bridge domain.
Step 7 Check the Use Split Horizon check box to enable split horizon with bridge domain.
Usage notes:
• The Use Split Horizon attribute is disabled by default.
• The Use Split Horizon attribute can be used only when the Configure Bridge Domain check box is
checked (enabled).
• When Use Split Horizon is enabled, the bridge domain command in the CLI will be generated with
split horizon. When it is disabled, the bridge domain command will be generated without split
horizon.
Step 8 Click the “Click here” link of the Description attribute to enter a description label for the service
request.
This is useful for searching the ISC database for the particular service request.