Re: EIGRP Metrics

Ok guys, show me an example where setting the K5 value to non-zero and
altering the MTU cause a change in the metric.

[P-RR]--------------[PE-A]

Both routers have K5=1:

router eigrp 100
 metric weights 0 1 0 1 0 1

PE-A is learning 200.1.1.1 from P-RR.
Modifying the MTU does not change the metric:

MTU = 1400, Metric = 9011

PE-A#sho ip route eigrp
     200.1.1.0/32 is subnetted, 1 subnets
D 200.1.1.1 [90/9011] via 140.197.254.1, 00:09:19, Serial1/1
PE-A#

PE-A#sho ip eigr topology 200.1.1.1 255.255.255.255
IP-EIGRP (AS 100): Topology entry for 200.1.1.1/32
  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 9011
  Routing Descriptor Blocks:
  140.197.254.1 (Serial1/1), from 140.197.254.1, Send flag is 0x0
      Composite metric is (9011/502), Route is Internal
      Vector metric:
        Minimum bandwidth is 1544 Kbit
        Total delay is 25000 microseconds
        Reliability is 255/255
        Load is 1/255
        Minimum MTU is 1400
        Hop count is 1

MTU = 1300, Metric = 9011

P-RR(config)#int s1/1
P-RR(config-if)#mtu 1300

PE-A(config)#int s1/1
PE-A(config-if)#mtu 1300

PE-A#sho ip eigr topology 200.1.1.1 255.255.255.255
IP-EIGRP (AS 100): Topology entry for 200.1.1.1/32
  State is Passive, Query origin flag is 1, 1 Successor(s), FD is 9011
  Routing Descriptor Blocks:
  140.197.254.1 (Serial1/1), from 140.197.254.1, Send flag is 0x0
      Composite metric is (9011/502), Route is Internal
      Vector metric:
        Minimum bandwidth is 1544 Kbit
        Total delay is 25000 microseconds
        Reliability is 255/255
        Load is 1/255
        Minimum MTU is 1300
        Hop count is 1

Metric is still 9011 even though MTU has changed.

On Tue, Aug 25, 2009 at 1:27 PM, rakesh m <raaki.88_at_gmail.com> wrote:

> k4 - reliability
>
> k5 - mtu (this will be tie breaker)
>
> its the huge formula again .. may help you
>
> k1*bandwidth+{(k2*bandwidth)/(256-load)+k3*delay)}* k5/(reliabiity+k4)
>
> remember each k value is a 24 bit number .. eventually turning on is what 1
> and 0 is and that dosent represent the actual value as you might guess
>
>
>
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