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Option: Configuring Automatic
Site Selection
You can configure BGP-signaled VPLS instances to automatically
specify the site IDs for the routers participating in the VPLS domain.
Site IDs help to minimize label usage in VPLS instances with numerous
PE routers.
The automatic-site-id statement includes the following
options:
-
startup-wait-time—Time to wait at startup
to receive all VPLS information for configured route targets from
other PE routers.
-
new-site-wait-time—Time to wait to receive
VPLS information from a newly configured routing instance or a new
site. Effectively, it is the time to wait before a site makes an attempt
to locate an unused site ID for its claim advertisement.
-
collision-detect-time—Time to wait after
issuing a claim advertisement before the PE router can start using
the site ID if it does not receive a competing claim. If the PE router
receives a competing claim within this time interval, it runs a collision
resolution procedure. Explicitly configured site IDs always take precedence
over automatically generated site IDs.
-
reclaim-wait-time—Time to wait before
attempting to claim a site ID after a collision. There are default
values for all of these options, so they do not need to be explicitly
configured.
To configure VPLS automatic site ID, include the automatic-site-id statement at the [edit routing-instances routing-instance-name protocols vpls site site-name] hierarchy
level:
- [edit]
- routing-instances {
-
- vpls instance 1 {
-
- protocols {
-
- vpls {
-
- site vpls instance 1 {
-
automatic-site-id;
- }
- }
- }
- }
- }
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