nx.os.and.cisco.nexus.switching.2nd.edition.1587143046

per-user static route
o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
172.26.0.0/16 is variably subnetted, 2 subnets, 2
masks
S 172.26.2.0/23 [1/0] via 172.26.32.33
C 172.26.32.32/27 is directly connected,
GigabitEthernet1/48
10.0.0.0/24 is subnetted, 2 subnets
O 10.10.10.0 [110/41] via 192.168.1.41, 00:07:23,
TenGigabitEthernet1/49
[110/41] via 192.168.1.37, 00:07:23,
TenGigabitEthernet1/50
O IA 10.10.100.0
[110/41] via 192.168.1.41, 00:07:23,
TenGigabitEthernet1/49
[110/41] via 192.168.1.37, 00:07:23,
TenGigabitEthernet1/50
192.168.1.0/24 is variably subnetted, 5 subnets, 2
masks
C 192.168.1.40/30 is directly connected,
TenGigabitEthernet1/49
C 192.168.1.36/30 is directly connected,
TenGigabitEthernet1/50
O 192.168.1.1/32
[110/2] via 192.168.1.37, 00:07:23,
TenGigabitEthernet1/50
C 192.168.1.3/32 is directly connected, Loopback0
O 192.168.1.2/32
[110/2] via 192.168.1.41, 00:07:23,
TenGigabitEthernet1/49
O IA 192.168.128.0/20
[110/2] via 192.168.1.37, 00:04:56,
TenGigabitEthernet1/50
OSPF Stub Routing
One of OSPF’s scalability features is stub routing. When OSPF stub routing is enabled, the
ABR no longer floods Type 5 LSAs into the area, minimizing the routing table and SPF
churn. Following are two forms of stub routing:
• Not-so-stubby routing: Permits external routes
• Totally stub by routing: Does not enable external routes
Stub routing enables intra-area routes to be learned and flooded throughout the area and all
external routes. A not-so-stubby area (NSSA) behaves in much the same way as a stub area
with the exception that you can configure the NSSA to allow redistribution of external routes