Refer to the exhibit. What must be configured on router RTA to summarize all routes from
area 0 to area 1?
A.
area 0 range 172.16.96.0 255.255.224.0
B.
area 0 range 172.16.96.0 255.255.255.0
C.
area 1 range 172.16.96.0 255.255.224.0
D.
area 1 range 172.16.96.0 255.255.0.0
E.
summary-address 172.16.96.0 255.255.224.0
F.
summary-address 172.16.96.0 0.0.63.255
Explanation:
OSPF supports the following two types of summarization.
To configure an ABR to summarize routes for a specific area before injecting them into a different area, use the
following syntax:
Router(config-router)#area area-id range address mask
To configure an ASBR to summarize extenal routes before injecting them into the OSPF domain, use the
following syntax:
Router(config-router)#summary-address adress mask
128 64 32 16 8 4 2 1
1 1 0 0 0 0 0
1 1 1 1 1 1 1
according to above, 1s kill 0s , we get only 64 + 32 = 96 for ip address
and subnetmask 128 + 64 + 32 = 224. The correct answer is ” A “
0
0
1 2 4 8 16 32 64 128
0 0 0 0 0 1 1
1 1 1 1 1 1 1
according to above, 1s kill 0s , we get only 64 + 32 = 96 for ip address
and subnetmask 128 + 64 + 32 = 224. The correct answer is ” A “
0
0