Brocade Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide (Supporting R05.6.00) - Manual (Page 192)

168 Multi-Service IronWare Multiprotocol Label Switch (MPLS) Configuration Guide
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Dynamic Bypass LSPs
1
There are two ways to establish a bypass LSP:
1. Static: The user manually configures in a MPLS enabled network so the protected LSPs uses
the bypass LSP for link or node protection.
2. Dynamic: Computes and establishes a bypass LSP at runtime when there is a requirement to
provide a FRR link or node protection to a facility protected LSP at its PLR points. Dynamic
bypass LSPs are these bypass LSPs. A protected LSP requiring backup-LSP protection at every
PLR triggers a dynamic bypass path computation and setup.
Bypass LSP terminology
Table 11 dynamic bypass LSPs terms.
TABLE 11 Common terms associated with dynamic bypass LSPs
Term Meaning
LSP Label Switched Path
MP Merge Point
NHOP Next Hop
NNHOP Next Next Hop
NNNHOP Next Next Next Hop
PLR Point of Local Repair
MMB Make-Before-Break
Figure 23 illustrates a protected dynamic bypass interface.
FIGURE 23 Protected dynamic bypass interface