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MPLS Guide
Manual Bypass Tunnels
Figure 15
Node A
Step 1. Disable dynamic bypass tunnels on Node B.
Step 2. Configure an LSP on Node B, such as B-E-F-C, which will be used only as
Table 8
Step 3. Configure an LSP from A to D and indicate fast-reroute bypass protection
3HE 18686 AAAB TQZZA
Node B
Node E
The CLI syntax for this configuration is:
config>router>mpls>dynamic-bypass [disable | enable]
By default, dynamic bypass tunnels are enabled.
a bypass. Specify each hop in the path and assign its strict or loose
option; in this case, the bypass LSP will have a strict path. Designate the
LSP as a primary LSP.
The CLI syntax for this configuration is:
config>router>mpls>path path-name>hop hop-index ip-address [strict |
loose]
config>router>mpls>lsp lsp-name bypass-only
(see also the configuration example below)
Including the bypass-only keyword disables some options under the LSP
configuration. See
Disabled and Enabled Options for Bypass-Only
Disabled Options
• bandwidth
• fast-reroute
• secondary
by selecting facility as the FRR method.
Use subject to Terms available at: www.nokia.com
Node C
Node F
Table
8.
Enabled Options
• adaptive
• adspec
• cspf
• exclude
• hop-limit
• include
• metric
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Node D
20123
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