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202BManual bypass tunnel for FRR configuration example
418BNetwork requirements
On the primary CRLSP Switch A—Switch B—Switch C—Switch D, use FRR to protect the link
Switch B—Switch C.
Use RSVP-TE to establish the primary CRLSP and bypass tunnel based on the constraints of the
explicit paths to transmit data between the two IP networks. The bypass tunnel uses path Switch
B—Switch E—Switch C. Switch B is the PLR and Switch C is the MP.
Configure BFD for RSVP-TE between Switch B and Switch C. When the link between Switch B and
Switch C fails, BFD can detect the failure quickly and notify RSVP-TE of the failure, so RSVP-TE can
switch traffic to the bypass tunnel.
Figure 36 Network diagram
Table 7 Interface and IP address assignment
Device Interface IP address Device Interface IP address
Switch A Loop0 1.1.1.1/32 Switch B Loop0 2.2.2.2/32
Vlan-int1 2.1.1.1/24 Vlan-int1 2.1.1.2/24
Vlan-int10 100.1.1.1/24 Vlan-int2 3.1.1.1/24
Switch D Loop0 4.4.4.4/32 Vlan-int4 3.2.1.1/24
Vlan-int3 4.1.1.2/24 Switch C Loop0 3.3.3.3/32
Vlan-int10 100.1.1.1/24 Vlan-int3 4.1.1.1/24
Switch E Loop0 5.5.5.5/32 Vlan-int2 3.1.1.2/24
Vlan-int4 3.2.1.2/24 Vlan-int5 3.3.1.2/24
Vlan-int5 3.3.1.1/24
419BConfiguration procedure
1. Configure IP addresses and masks for interfaces. (Details not shown.)
2. Configure IS-IS to advertise interface addresses, including the loopback interface address.
(Details not shown.)
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