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Community Member

Eigrp metric count

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hi,

All router running default eigrp configuration, Router 3 has 2 successor to reach r2 loop (10.1.102.2),and it both FD is 2681856, how it got 2 successor becoz  from router3 se 1/1 has two hop to reach r2 loop and from se 1/0 has only one hop. Your suggestion plz.

R3#sh ip eigrp topology 10.1.102.0/29

IP-EIGRP (AS 100): Topology entry for 10.1.102.0/29

  State is Passive, Query origin flag is 1, 2 Successor(s), FD is 2681856

  Routing Descriptor Blocks:

  10.1.103.1 (Serial1/1), from 10.1.103.1, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

  10.1.203.2 (Serial1/0), from 10.1.203.2, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

2 ACCEPTED SOLUTIONS

Accepted Solutions
Community Member

Re: Eigrp metric count

Dear All see the result below. Hopefully confusions are cleared.Goodluck.

sh ip eigrp topology 10.1.102.0/29

IP-EIGRP (AS 100): Topology entry for 10.1.102.0/29

  State is Passive, Query origin flag is 1, 2 Successor(s), FD is 2681856

  Routing Descriptor Blocks:

  10.1.103.1 (Serial1/1), from 10.1.103.1, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

  10.1.203.2 (Serial1/0), from 10.1.203.2, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

REGARDS

WAQAS YOUNAS

CCIE#27815

Routing&Switching

Service Provider

Regards Waqas Younas CCIEx2 #27815 (Routing and Switching) (Service Provider) Contact for Online Training

Eigrp metric count

R2 does not "own" the subnet. It is owned by both R1 and R2 so they both advertise it directly to R3.

Daniel Dib
CCIE #37149

Daniel Dib CCIE #37149 Please rate helpful posts.
4 REPLIES

Eigrp metric count

The route you are looking at is the subnet connecting R1 and R2 (10.1.102.0/29). Both R1 and R2 are directly connected to this so R3 gets the same route from both of them with the same metric.

Daniel Dib
CCIE #37149

Daniel Dib CCIE #37149 Please rate helpful posts.
Community Member

Eigrp metric count

But Router 3 has directly connected to R2 (R2-->R2 20000+20000)so it should be a successor, how it select second successor by going from R3-->R1-->R2 (20000+20000+20000).

Eigrp metric count

R2 does not "own" the subnet. It is owned by both R1 and R2 so they both advertise it directly to R3.

Daniel Dib
CCIE #37149

Daniel Dib CCIE #37149 Please rate helpful posts.
Community Member

Re: Eigrp metric count

Dear All see the result below. Hopefully confusions are cleared.Goodluck.

sh ip eigrp topology 10.1.102.0/29

IP-EIGRP (AS 100): Topology entry for 10.1.102.0/29

  State is Passive, Query origin flag is 1, 2 Successor(s), FD is 2681856

  Routing Descriptor Blocks:

  10.1.103.1 (Serial1/1), from 10.1.103.1, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

  10.1.203.2 (Serial1/0), from 10.1.203.2, Send flag is 0x0

      Composite metric is (2681856/2169856), Route is Internal

      Vector metric:

        Minimum bandwidth is 1544 Kbit

        Total delay is 40000 microseconds

        Reliability is 255/255

        Load is 1/255

        Minimum MTU is 1500

        Hop count is 1

REGARDS

WAQAS YOUNAS

CCIE#27815

Routing&Switching

Service Provider

Regards Waqas Younas CCIEx2 #27815 (Routing and Switching) (Service Provider) Contact for Online Training
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