Problem: bb01.lsrei01 is preferring a supernet static route to null0 over an external /32 LSA: 77.73.147.245
ip route 77.73.144.0 255.255.248.0 Null0 200 (needed for bgp announcement)
router ospf 1
log-adjacency-changes
passive-interface default
no passive-interface GigabitEthernet0/1
no passive-interface GigabitEthernet0/2
no passive-interface GigabitEthernet0/3
network 77.73.144.0 0.0.0.255 area 0
default-information originate always
bb01.lsrei01#sho ip ospf database external 77.73.147.245
OSPF Router with ID (77.73.144.65) (Process ID 1)
Type-5 AS External Link States
LS age: 259
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 77.73.147.245 (External Network Number )
Advertising Router: 77.73.144.69
LS Seq Number: 80000004
Checksum: 0x944C
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 77.73.144.9
External Route Tag: 0
bb01.lsrei01#sho ip route 77.73.147.245
Routing entry for 77.73.144.0/21
Known via "static", distance 200, metric 0 (connected)
Advertised by bgp 42579
Routing Descriptor Blocks:
* directly connected, via Null0
Route metric is 0, traffic share count is 1
bb01.lsrei01#sho ip route 77.73.144.9 <------------ next hop from the LSA
Routing entry for 77.73.144.8/29
Known via "connected", distance 0, metric 0 (connected, via interface)
Routing Descriptor Blocks:
* directly connected, via GigabitEthernet0/2
Route metric is 0, traffic share count is 1
Yet this one is fine??? -
bb01.lsrei01#sho ip ospf database external 77.73.148.32
OSPF Router with ID (77.73.144.65) (Process ID 1)
Type-5 AS External Link States
LS age: 426
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 77.73.148.32 (External Network Number )
Advertising Router: 77.73.144.71
LS Seq Number: 800005CE
Checksum: 0x9B78
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0
External Route Tag: 0
Routing Bit Set on this LSA
LS age: 231
Options: (No TOS-capability, DC)
LS Type: AS External Link
Link State ID: 77.73.148.32 (External Network Number )
Advertising Router: 77.73.144.72
LS Seq Number: 800005CC
Checksum: 0x997B
Length: 36
Network Mask: /32
Metric Type: 2 (Larger than any link state path)
TOS: 0
Metric: 20
Forward Address: 0.0.0.0
External Route Tag: 0
bb01.lsrei01#sho ip route 77.73.148.32
Routing entry for 77.73.148.32/32
Known via "ospf 1", distance 110, metric 20, type extern 2, forward metric 510
Last update from 77.73.144.11 on GigabitEthernet0/2, 00:05:52 ago
Routing Descriptor Blocks:
* 77.73.144.11, from 77.73.144.72, 00:05:52 ago, via GigabitEthernet0/2
Route metric is 20, traffic share count is 1
77.73.147.245 is being advertised by an asa:
router ospf 1
router-id 77.73.144.69
network 77.73.144.0 255.255.255.0 area 0
area 0
log-adj-changes
redistribute static subnets route-map VPN-REDISTRIBUTE
!
route-map VPN-REDISTRIBUTE permit 10
match ip address Remote-Staff_netblock
!
access-list Remote-Staff_netblock standard permit 77.73.147.224 255.255.255.224
!
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set reverse-route
fw01# sho route | i 77.73.147.245
S 77.73.147.245 255.255.255.255 [1/0] via 77.73.144.9, outside