Huawei S6700 Series - Page 164

Destination Cost Type NextHop AdvRouter Area
0.0.0.0/0 2 Inter-area 192.168.1.1 1.1.1.1 0.0.0.1
172.16.1.0/24 1 Transit 172.16.1.1 3.3.3.3 0.0.0.1
172.17.1.0/24 4 Inter-area 192.168.1.1 1.1.1.1 0.0.0.1
192.168.0.0/24 2 Inter-area 192.168.1.1 1.1.1.1 0.0.0.1
192.168.1.0/24 1 Transit 192.168.1.2 3.3.3.3 0.0.0.1
192.168.2.0/24 3 Inter-area 192.168.1.1 1.1.1.1 0.0.0.1
Total Nets: 6
Intra Area: 2 Inter Area: 4 ASE: 0 NSSA: 0
When the area where SwitchC resides is configured as a stub area, you may not find the
AS external route but a default route external to the AS.
# Disable Router A from advertising Type3 LSAs to the stub area.
[SwitchA] ospf
[SwitchA-ospf-1] area 1
[SwitchA-ospf-1-area-0.0.0.1] stub no-summary
[SwitchA-ospf-1-area-0.0.0.1] quit
[SwitchA-ospf-1] quit
4. Verify the configuration.
# Check the OSPF routing table of SwitchC.
[SwitchC] display ospf routing
OSPF Process 1 with Router ID 3.3.3.3
Routing Tables
Routing for Network
Destination Cost Type NextHop AdvRouter Area
0.0.0.0/0 2 Inter-area 192.168.1.1 1.1.1.1 0.0.0.1
172.16.1.0/24 1 Transit 172.16.1.1 3.3.3.3 0.0.0.1
192.168.1.0/24 1 Transit 192.168.1.2 3.3.3.3 0.0.0.1
Total Nets: 3
Intra Area: 2 Inter Area: 1 ASE: 0 NSSA: 0
After the advertisement of Summary-LSA to the stub area is disabled, the route entries are
further reduced. The AS external routes are invisible in the routing table. Instead, there is
a default route.
Configuration Files
l Configuration file of SwitchA
#
sysname SwitchA
#
router id 1.1.1.1
#
vlan batch 10 20
#
interface Vlanif10
ip address 192.168.0.1 255.255.255.0
#
interface Vlanif20
ip address 192.168.1.1 255.255.255.0
#
interface XGigabitEthernet0/0/1
port trunk allow-pass vlan 10
#
interface XGigabitEthernet0/0/2
port trunk allow-pass vlan 20
#
ospf 1
area 0.0.0.0
network 192.168.0.0 0.0.0.255
area 0.0.0.1
network 192.168.1.0 0.0.0.255
S6700 Series Ethernet Switches
Configuration Guide - IP Routing 4 OSPF Configuration
Issue 01 (2012-03-15) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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