# Minimum lsa arrival 1 secs lsa group pacing timer 100

• No School
• AA 1
• 457

This preview shows page 138 - 141 out of 457 pages.

Minimum LSA interval 5 secs. Minimum LSA arrival 1 secs LSA group pacing timer 100 secs Interface flood pacing timer 55 msecs Retransmission pacing timer 100 msecs Number of external LSA 0. Checksum Sum 0x0 Number of opaque AS LSA 0. Checksum Sum 0x0 Number of DCbitless external and opaque AS LSA 0 Number of DoNotAge external and opaque AS LSA 0 Number of areas in this router is 2. 2 normal 0 stub 0 nssa External flood list length 0 Area BACKBONE(0) Number of interfaces in this area is 2 Area has no authentication SPF algorithm executed 4 times Area ranges are Number of LSA 4. Checksum Sum 0x29BEB Number of opaque link LSA 0. Checksum Sum 0x0 Number of DCbitless LSA 3 Number of indication LSA 0 Number of DoNotAge LSA 0 Flood list length 0 ReferencE. -book/ospf-s1.html#wp8749965360 Cisco 400-101 Exam "Pass Any Exam. Any Time." - 138
QUESTION NO: 169 Consider a network that mixes link bandwidths from 128 kb/s to 40 Gb/s. Which value should beset for the OSPF reference bandwidth? A. Set a value of 128. B. Set a value of 40000. C. Set a manual OSPF cost on each interface. D. Use the default value. E. Set a value of 40000000. F. Set a value of 65535. Answer: CExplanation: Unlike the metric in RIP which is determined by hop count and EIGRP’s crazymathematical formulated metric, OSPF is a little more simple. The default formula to calculate thecost for the OSPF metric is (10^8/BW). By default the metrics reference cost is 100Mbps, so any link that is 100Mbps will have a metric of 1. a T1 interface will have a metric of 64 so in this case if a router is trying to get to a FastEthernetnetwork on a router that is through a T1 the metric would be 65 (64 +1). You do however have the ability to statically specify a metric on a per interface basis by using theip ospf cost # where the cost is an integer between 1-65535. So the big question is why would you want to statically configure a metric? The biggest advantage of statically configuring an OSPF metric on an interface is to manipulatewhich route will be chosen dynamically via OSPF. In a nut shell it’s like statically configuring adynamic protocol to use a specific route. It should also be used when the interface bandwidthsvary greatly (some very low bandwidth interfaces and some very high speed interfaces on thesame router). QUESTION NO: 170 Which statement about a type 4 LSA in OSPF is true? Cisco 400-101 Exam "Pass Any Exam. Any Time." - 139

#### You've reached the end of your free preview.

Want to read all 457 pages?

• Fall '19

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern