Chapter 10
1: | Why are loopback interfaces advertised as /32 in OSPF? |
A1: | Answer: Loopback interfaces are considered host routes in OSPF. |
2: | What are the route types used with OSPF? |
A2: | Answer: Intra-area routes, inter-area routes, external routes Type 1, and external routes Type 2 |
3: | Why do I receive the “cannot allocate router id” error message? |
A3: | Answer: OSPF chooses the highest IP address as its router ID. If none of your interfaces are in the up/up mode and configured with an IP address, OSPF returns this error message. Using a loopback interface prevents this error. |
4: | Why do I receive the “unknown routing protocol” error message? |
A4: | Answer: This message is most frequently caused by your selection of Cisco IOS Software that does not support ... |
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