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Beginner

Topology Table Contents

I recently came across this question while studying for the ENCOR exam:

 

Which of the following attributes does the EIGRP topology table contain? (Choose all that apply.)
a. destination network prefix
b. hop count
c. total path delay
d. maximum path bandwidth
e. list of EIGRP neighbors

 

Answer: A, B, C, E

 

I was confused why answers B and C were correct. I do not see anything in the EIGRP topology table below that shows the hop count or delay. Is this just a bad question,  or am I missing something? I appreciate any input you have. 

 

show ip eigrp topology.jpg

2 ACCEPTED SOLUTIONS

Accepted Solutions
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VIP Expert

Hello,

 

the question probably refers to the output you get when you specify a network, e.g.:


R3#sh ip eigrp topology 192.168.1.0/30
EIGRP-IPv4 Topology Entry for AS(1)/ID(192.168.1.6) for 192.168.1.0/30
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 3072
Descriptor Blocks:
192.168.1.5 (GigabitEthernet0/1), from 192.168.1.5, Send flag is 0x0
Composite metric is (3072/2816), route is Internal
Vector metric:
Minimum bandwidth is 1000000 Kbit
Total delay is 20 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
Originating router is 192.168.1.2

View solution in original post

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Engager


it does look like bad question; if this is from a book, try to see if they have book errata for that edition.

note that from detail view of EIGRP prefix and length, like with show ip eigrp topology 10.10.10.1/32, you will get more info including:

Minimum bandwidth, Total delay , Reliability, Load, Minimum MTU is 1514, Hop count is #, Originating router#

 

 

Regards, ML
**Please Rate All Helpful Responses **

View solution in original post

8 REPLIES 8
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VIP Expert

Hello,

 

the question probably refers to the output you get when you specify a network, e.g.:


R3#sh ip eigrp topology 192.168.1.0/30
EIGRP-IPv4 Topology Entry for AS(1)/ID(192.168.1.6) for 192.168.1.0/30
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 3072
Descriptor Blocks:
192.168.1.5 (GigabitEthernet0/1), from 192.168.1.5, Send flag is 0x0
Composite metric is (3072/2816), route is Internal
Vector metric:
Minimum bandwidth is 1000000 Kbit
Total delay is 20 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 1
Originating router is 192.168.1.2

View solution in original post

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Thank you, George!
Highlighted
Engager


it does look like bad question; if this is from a book, try to see if they have book errata for that edition.

note that from detail view of EIGRP prefix and length, like with show ip eigrp topology 10.10.10.1/32, you will get more info including:

Minimum bandwidth, Total delay , Reliability, Load, Minimum MTU is 1514, Hop count is #, Originating router#

 

 

Regards, ML
**Please Rate All Helpful Responses **

View solution in original post

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I agree, Martin. They probably could have worded it in a way that was not as confusing. I now know that they meant the topology output from a specific route, based on the solution above.

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Note, I found and edited my previous post; You can get more info with show ip eigrp topology x.x.x.x/y
example:

show ip eigrp top 10.10.10.1/32
EIGRP-IPv4 Topology Entry for AS(1)/ID(10.10.10.1) for 10.10.10.1/32
State is Passive, Query origin flag is 1, 1 Successor(s), FD is 128256
Descriptor Blocks:
0.0.0.0 (Loopback1), from Connected, Send flag is 0x0
Composite metric is (128256/0), route is Internal
Vector metric:
Minimum bandwidth is 8000000 Kbit
Total delay is 5000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1514
Hop count is 0
Originating router is 10.10.10.1

 

Regards, ML
**Please Rate All Helpful Responses **

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Thank you, Martin!
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Don't worry; based on my 15-year Cisco exam testing, Cisco tries to avoid confusing or vague format of questions. There could be 1-2 questions on your exam that seem to be "out there"; those could be so called "control" or "Beta" questions.
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That is good to know. Thank you.