Configuring Flood Blocking - Dell PowerConnect 8024 User Configuration Manual

(ABR-R0) #show ip ospf range 1
Prefix
172.21.0.0
(ABR-R0) #show ip ospf 0 database summary
LS Age: 49
LS options: (E-Bit)
LS Type: Network Summary LSA
LS Id: 172.21.0.0 (network prefix)
Advertising Router: 10.10.10.10
LS Seq Number: 0x80000003
Checksum: 0x78f8
Length: 28
Network Mask: 255.255.0.0
Metric: 0
The cost can be set to the maximum value, 16,777,215, which is LSInfinity.
Since OSPF cannot send a type 3 summary LSA with this metric (according
to RFC 2328), the summary LSA is flushed. The individual routes are not re-
advertised.

Configuring Flood Blocking

Figure 35-40 shows an example topology for flood blocking. The
configuration follows.
Subnet Mask
255.255.0.0
Network Summary States (Area 0.0.0.0)
Type Action
S Advertise
Configuring OSPF and OSPFv3
Cost Active
0 Y
1013