H3C Technologies H3C SR8800 - Manual (Page 192)

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ISIS(1) IPv4 Level-1 Forwarding Table
-------------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
--------------------------------------------------------------------------
10.1.1.0/24 10 NULL POS2/1/2 Direct D/L/-
10.1.2.0/24 10 NULL POS2/1/1 Direct D/L/-
192.168.0.0/24 10 NULL POS2/1/3 Direct D/L/-
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
ISIS(1) IPv4 Level-2 Forwarding Table
-------------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
--------------------------------------------------------------------------
10.1.1.0/24 10 NULL POS2/1/2 Direct D/L/-
10.1.2.0/24 10 NULL POS2/1/1 Direct D/L/-
192.168.0.0/24 10 NULL POS2/1/3 Direct D/L/-
172.16.0.0/16 20 NULL POS2/1/3 192.168.0.2 R/-/-
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
[RouterD] display isis route
Route information for ISIS(1)
-----------------------------
ISIS(1) IPv4 Level-2 Forwarding Table
-------------------------------------
IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags
--------------------------------------------------------------------------
192.168.0.0/24 10 NULL POS2/1/1 Direct D/L/-
10.1.1.0/24 20 NULL POS2/1/1 192.168.0.1 R/-/-
10.1.2.0/24 20 NULL POS2/1/1 192.168.0.1 R/-/-
172.16.0.0/16 10 NULL GE1/1/1 Direct D/L/-
Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set
DIS election configuration
Network requirements
As shown in Figure 65 , on a broadcast network (Ethernet), Router A, Router B, Router C and Router D
reside in IS-IS area 10. Router A and Router B are Level-1-2 routers, Router C is a Level-1 router, and Router
D is a Level-2 router.
Change the DIS priority of Router A to make it selected as the Level-1-2 DIS router.