3com S7906E Manuel De Montage
1-49
# 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
10.0.0.1/24
Vlan-int100
10.0.0.3/24
Vlan-int100
10.0.0.2/24
10.0.0.2/24
GR helper
GR helper
GR restarter
Switch A
Switch C
Switch B