[SwitchA] display ospf peer
OSPF Process 1 with Router ID 1.1.1.1
Neighbors
Area 0.0.0.0 interface 192.168.0.1(Vlanif10)'s neighbors
Router ID: 2.2.2.2 Address: 192.168.0.2
State: Full Mode:Nbr is Master Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 36 sec
Neighbor is up for 00:15:04
Authentication Sequence: [ 0 ]
Neighbors
Area 0.0.0.1 interface 192.168.1.1(Vlanif20)'s neighbors
Router ID: 3.3.3.3 Address: 192.168.1.2
State: Full Mode:Nbr is Master Priority: 1
DR: None BDR: None MTU: 0
Dead timer due in 39 sec
Neighbor is up for 00:07:32
Authentication Sequence: [ 0 ]
# Run the display gtsm statistics all command on Switch C. You can view the GTSM statistics.
If the default action performed on packets is "pass" and all the packets are valid, the number of
dropped packets is 0.
<SwitchC> display gtsm statistics all
GTSM Statistics Table
----------------------------------------------------------------
SlotId Protocol Total Counters Drop Counters Pass Counters
----------------------------------------------------------------
1 BGP 0 0 0
1 BGPv6 0 0 0
1 OSPF 0 0 0
1 LDP 0 0 0
2 BGP 0 0 0
2 BGPv6 0 0 0
2 OSPF 0 0 0
2 LDP 0 0 0
3 BGP 0 0 0
3 BGPv6 0 0 0
3 OSPF 0 0 0
3 LDP 0 0 0
4 BGP 0 0 0
4 BGPv6 0 0 0
4 OSPF 0 0 0
4 LDP 0 0 0
5 BGP 0 0 0
5 BGPv6 0 0 0
5 OSPF 0 0 0
5 LDP 0 0 0
7 BGP 0 0 0
7 BGPv6 0 0 0
7 OSPF 0 0 0
7 LDP 0 0 0
----------------------------------------------------------------
If the host simulates the OSPF packets of Switch A to attack Switch C, the packets are dropped
because the TTL value is not 255 when the packets reach Switch C. In the GTSM statistics of
Switch C, the number of dropped packets also increases.
----End
Configuration Files
l Configuration file of Switch A
#
sysname SwitchA
#
vlan batch 10 20
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.
176
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