3com S7906E Manuel De Montage

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# Display IS-IS routing information on Switch C.

[SwitchC] display isis route

Route information for ISIS(1)

-----------------------------

ISIS(1) IPv4 Level-1 Forwarding Table

-------------------------------------

IPV4 Destination IntCost ExtCost ExitInterface NextHop Flags

--------------------------------------------------------------------------

10.1.1.0/24 10 NULL VLAN100 Direct D/L/-

10.1.2.0/24 10 NULL VLAN200 Direct D/L/-

192.168.0.0/24 10 NULL VLAN300 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 VLAN100 Direct D/L/-

10.1.2.0/24 10 NULL VLAN200 Direct D/L/-

192.168.0.0/24 10 NULL VLAN300 Direct D/L/-

10.1.4.0/24 10 NULL VLAN300 192.168.0.2 R/L/-

10.1.5.0/24 20 NULL VLAN300 192.168.0.2 R/L/-

10.1.6.0/24 20 NULL VLAN300 192.168.0.2 R/L/-

Flags: D-Direct, R-Added to RM, L-Advertised in LSPs, U-Up/Down Bit Set

IS-IS Graceful Restart Configuration Example

Network requirements

Switch A, Switch B, and Switch C belong to the same IS-IS routing domain, as illustrated in

Figure 1-18 Network diagram for IS-IS GR configuration

Vlan-int100
10.0.0.1/24

Vlan-int100

10.0.0.3/24

Vlan-int100
10.0.0.2/24

GR helper

GR restarter

Switch A

Switch C

Switch B