H3C Technologies H3C SR8800 - Manual (Page 143)

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3.1.1.0/24 O_ASE 150 1 10.2.1.2 GE3/1/2
3.1.2.0/24 O_ASE 150 1 10.2.1.2 GE3/1/2
3.1.3.0/24 O_ASE 150 1 10.2.1.2 GE3/1/2
10.1.1.0/24 Direct 0 0 10.1.1.1 GE3/1/1
10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.2.1.0/24 Direct 0 0 10.2.1.1 GE3/1/2
10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.3.1.0/24 OSPF 10 4 10.1.1.2 GE3/1/1
10.4.1.0/24 OSPF 10 13 10.2.1.2 GE3/1/2
10.5.1.0/24 OSPF 10 14 10.1.1.2 GE3/1/1
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
4. Configure Router C to filter out the route 3.1.3.0/24:
# Configure the IPv4 prefix list.
[RouterC] ip ip-prefix prefix1 index 1 deny 3.1.3.0 24
[RouterC] ip ip-prefix prefix1 index 2 permit 3.1.1.0 24
[RouterC] ip ip-prefix prefix1 index 3 permit 3.1.2.0 24
# Reference the prefix list to filter out the route 3.1.3.0/24.
[RouterC] ospf 1
[RouterC-ospf-1] filter-policy ip-prefix prefix1 export static
# Display the OSPF routing table of Router A.
<RouterA> display ip routing-table
Routing Tables: Public
Destinations : 11 Routes : 11
Destination/Mask Proto Pre Cost NextHop Interface
3.1.1.0/24 O_ASE 150 1 10.2.1.2 GE3/1/2
3.1.2.0/24 O_ASE 150 1 10.2.1.2 GE3/1/2
10.1.1.0/24 Direct 0 0 10.1.1.1 GE3/1/1
10.1.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.2.1.0/24 Direct 0 0 10.2.1.1 GE3/1/2
10.2.1.1/32 Direct 0 0 127.0.0.1 InLoop0
10.3.1.0/24 OSPF 10 4 10.1.1.2 GE3/1/1
10.4.1.0/24 OSPF 10 13 10.2.1.2 GE3/1/2
10.5.1.0/24 OSPF 10 14 10.1.1.2 GE3/1/1
127.0.0.0/8 Direct 0 0 127.0.0.1 InLoop0
127.0.0.1/32 Direct 0 0 127.0.0.1 InLoop0
The route destined for network 3.1.3.0/24 is filtered out.
5. Configure Router A to filter out route 10.5.1.1/24:
# Configure the ACL on Router A.
<RouterA> system-view
[RouterA] acl number 2000
[RouterA-acl-basic-2000] rule 0 deny source 10.5.1.0 0.0.0.255
[RouterA-acl-basic-2000] rule 1 permit source any
[RouterA-acl-basic-2000] quit
# Use the ACL to filter route 10.5.1.0/24.