b In the OSPF protocol, the destination address used by the router to send update packets to the DR router is _____.
Running the command on the router and its display information is as follows:
<RTA>displaisis brief
ISIS (1) Protocol Brief Information:
network-entit:
01.1111.1111.1111.00
is-level: level-1-2
cost-ste: narrow
preference: 15
Lsp-length receive: 1497
Lsp-length originate: level-1 1476
level-2 1476
maximum imported routes number: 10000
Timers:
lsp-max-age: 1200
lsp-refresh: 900
Interval between SPFs: 10
From the above information, we can know that RTA______.
The two routers cannot establish OSPF neighbors. The following possible reasons are ________.
In the OSPF protocol, the types of LSAs that ASBRs cannot aggregate are _______
Each OSI network device is networked as shown in the figure. There are ______ ESs in the OSI network. (Host)
