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Cisco IP Solution Center L2VPN and Carrier Ethernet User Guide, 6.0
Chapter 7 Creating an L2VPN Policy
Defining an Ethernet EWS (EPL) Policy with a CE
This check box is checked by default. If the check box is not checked, the pseudowire will be provisioned
on the subinterface of the PFC card, if it is available. This option is only available for C76xx devices.
Note The N-PE Pseudo-wire On SVI attribute will be unavailable within service requests based on this policy
for devices running IOS XR.
Step 27 Enter the MTU Size in bytes.
The maximum transmission unit (MTU) size is configurable and optional. The default size is 9216, and
the range is 1500 to 9216. ISC does not perform an integrity check for this customized value. If a service
request goes to the Failed Deploy state because this size is not accepted, you must adjust the size until
the Service Request is deployed.
In ISC 6.0, different platforms support different ranges.
• For the 3750 and 3550 platforms, the MTU range is 1500-1546.
• For the 7600 ethernet port, the MTU size is always 9216. Even with the same platform and same
IOS release, different line cards support the MTU differently. For example, older line cards only take
an MTU size of 9216 and newer cards support 1500-9216. However, ISC 6.0 uses 9216 in both cases.
• For the 7600 SVI (interface VLAN), the MTU size is 1500-9216.
Step 28 Check the PW Tunnel Selection check box if you want to be able to manually select the Traffic
Engineering (TE) tunnel for the pseudowire connecting point-to-point N-PEs.
This attribute is unchecked by default
Subsequently, when you create a service request based on this policy, you must specify the TE tunnel ID
in a field provided. ISC uses the tunnel information to create and provision a pseudowire class that
describes the pseudowire connection between two N-PEs. This pseudowire class can be shared by more
than one pseudowire, as long as the pseudowires share the same tunnel ID and remote loopback address.
You are responsible to ensure that the tunnel interface and associated ID are configured. During service
request creation when you specify the tunnel ID number, ISC does not check the validity of the value.
That is, ISC does not verify the existence of the tunnel.
Note The PW Tunnel Selection attribute will be unavailable within service requests based on this policy for
devices running IOS XR.
Step 29 Click the Next button, if you want to enable template support for the policy.
The Template Association window appears. In this window, you can enable template support and,
optionally, associate templates and data files with the policy. For instructions about associating
templates with policies and how to use the features in this window, see
Appendix B, “Working with
Templates and Data Files”. When you have completed setting up templates and data files for the policy,
click Finish in the Template Association window to close it and return to the Policy Editor window.
Step 30 Click Finish.