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What is OSPF topology?
Open Shortest Path First (OSPF) is a routing protocol for Internet Protocol (IP) networks. It uses a link state routing (LSR) algorithm and falls into the group of interior gateway protocols (IGPs), operating within a single autonomous system (AS). It is defined as OSPF Version 2 in RFC 2328 (1998) for IPv4.
Which packet type is invalid for OSPF routing protocol?
OSPF
| Question | Answer |
|---|---|
| During an OSPF DR/BDR election, what is used to determine the DR or the BDR when participating OSPF routers have identical interface priorities? | The router ID |
| Which packet type is invalid for OSPF? Hello, LRU, LSR, LSAck, or DBD | LRU |
How to configure OSPF areas for technical support?
In the topology shown in Figure 2, a virtual link is established between area 0.0.0.3 and the backbone area through area 0.0.0.2. All outbound traffic destined for other areas is routed through area 0.0.0.2 to the backbone area and then to the appropriate ABR.
How to configure an OSPF router identifier?
Configure the router identifiers for the devices in your OSPF network. See Example: Configuring an OSPF Router Identifier. To activate OSPF on a network, you must enable the OSPF protocol on all interfaces within the network on which OSPF traffic is to travel.
How are OSPF areas connected to backbone areas?
An OSPF restriction requires all areas to be directly connected to the backbone area so that packets can be properly routed. All packets are routed first to the backbone area by default.
What are the different types of LSAs in OSPF?
Type 4 LSAs are sent to other areas to build the Shortest Path Tree to an ASBR. This represents any external routes redistributed into OSPF. Type 5 LSAs are not allowed in Stub Areas. Type 7 LSAs allow external information to pass through NSSA areas.