H3C Technologies H3C SR8800 - Manual (Page 354)

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Flag : R/-/- Cost : 10
Next Hop : FE80::20F:E2FF:FE3E:FA3D Interface: S2/1/3
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
# Display the IPv6 IS-IS routing table of Router D.
[RouterD] display isis route ipv6
Route information for ISIS(1)
-----------------------------
ISIS(1) IPv6 Level-2 Forwarding Table
-------------------------------------
Destination: 2001:1:: PrefixLen: 64
Flag : R/-/- Cost : 20
Next Hop : FE80::200:FF:FE0F:4 Interface: S2/1/1
Destination: 2001:2:: PrefixLen: 64
Flag : R/-/- Cost : 20
Next Hop : FE80::200:FF:FE0F:4 Interface: S2/1/1
Destination: 2001:3:: PrefixLen: 64
Flag : D/L/- Cost : 10
Next Hop : Direct Interface: S2/1/1
Destination: 2001:4::1 PrefixLen: 128
Flag : D/L/- Cost : 0
Next Hop : Direct Interface: GE1/1/1
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
Configuring BFD for IS-IS
Network requirements
• As shown in Figure 116 , configure IPv6 IS-IS on Router A, Router B and Router C and configure BFD
over the link Router A<—>L2 Switch<—>Router B.
• After 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 116 Network diagram
Device Interface IPv6 address Device Interface IPv6 address
Router A GE3/1/1 2001::1/64 Router B GE3/1/1 2001::2/64
GE3/1/2 2001:2::1/64 GE3/1/2 2001:3::2/64
Router C GE3/1/1 2001:2::2/64