Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 196)

172 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Dynamic Bypass LSPs
1
Dynamic bypass LSP creation must meet the following criteria:
• There are no existing static bypass or dynamic bypass LSPs to satisfy the facility protected LSP
backup path request.
• Dynamic bypass is allowed to be created under current configuration for the protected
interface.
• Dynamic bypass creation does not exceed the configured or default system limits under
current state.
• There is a path available to setup the dynamic bypass LSP to fulfill backup request constraints.
• Facility protected LSP PLR originate the dynamic bypass LSP with a merge point as the
destination.
• Merge point selection for dynamic bypass creation uses the existing order of backup path
merge point selection. When node protection is not requested, reverse the order of step 1 and
2.
Steps:
1. Tries to create a dynamic bypass LSP to NNHOP merge point.
2. When step 1 fails, then attempts to create a dynamic bypass LSP to NHOP merge point.
3. When step 2 fails, then attempts to create a dynamic bypass LSP to NNNHOP merge point.
4. When step 3 fails, then attempts to create a dynamic bypass LSP to NNNNHOP merge
point.
5. This continues until the protected LSP destination node is merge point.