R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

450
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Destination : 2001:1:: PrefixLen: 64
Flag : R/-/- Cost : 20
Next Hop : FE80::200:FF:FE0F:4 Interface: GE2/1/1
Destination : 2001:2:: PrefixLen: 64
Flag : R/-/- Cost : 20
Next Hop : FE80::200:FF:FE0F:4 Interface: GE2/1/1
Destination : 2001:3:: PrefixLen: 64
Flag : D/L/- Cost : 10
Next Hop : Direct Interface: GE2/1/1
Destination : 2001:4::1 PrefixLen: 128
Flag : D/L/- Cost : 0
Next Hop : Direct Interface: GE2/1/2
Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set
BFD for IPv6 IS-IS configuration example
Network requirements
As shown in Figure 104:
• Configure IPv6 IS-IS on Router A, Router B, and Router C so that they can reach each other.
• Enable BFD on GigabitEthernet 2/1/1 of Router A and Router B.
When the link between Router B and the Layer-2 switch fails, BFD can quickly detect the failure and notify
IPv6 IS-IS of the failure. Then Router A and Router B communicate through Router C.
Figure 104 Network diagram
Table 20 Interface and IP address assignment
Device Interface IPv6
address Device Interface IPv6 address
Router A GE2/1/1 2001::1/64 Router B GE2/1/2 2001:3::2/64
Router A GE2/1/2 2001:2::1/64 Router C GE2/1/1 2001:2::2/64
Router B GE2/1/1 2001::2/64 Router C GE2/1/2 2001:3::1/64