Laboratorio EIGRP DUAL - The Cisco Learning Network

Laboratorio EIGRP DUAL
BW=128
Delay=20000
BW=128
Delay=20000
192.168.77.0/24
192.168.76.0/24
192.168.80.1/24
R400
R1
R1000
BW=128
Delay=20000
192.168.75.0/24
192.168.100.0/24
BW=128
Delay=10000
LUCIO LÓPEZ R ING. ELECTRÓNICO 1
S1
BW=10000
Delay=1000
R3
R2
10.1.1.0/29
S0
BW=128
Delay=10000
192.168.200.1/24

Tabla topología R2 hacia red 192.168.80.0
R2#sh ip eigrp topology 192.168.80.0
IP-EIGRP (AS 100): Topology entry for 192.168.80.0/24
State is Passive, Query origin flag is 1, 2 Successor(s), FD is 21561600
Routing Descriptor Blocks:
192.168.100.1 (Serial1), from 192.168.100.1, Send flag is 0x0
Composite metric is (21561600/21049600), Route is Internal
Vector metric:
Minimum bandwidth is 128 Kbit
Total delay is 61000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 3
10.1.1.3 (Serial0), from 10.1.1.3, Send flag is 0x0
Composite metric is (21561600/21305600), Route is Internal
Vector metric:
Minimum bandwidth is 128 Kbit
Total delay is 61000 microseconds
Reliability is 255/255
Load is 1/255
Minimum MTU is 1500
Hop count is 4
R2#
LUCIO LÓPEZ R ING. ELECTRÓNICO 2

Valores obtenidos para elección de ruta
El FD es 21561600 para las dos rutas
El AD es distinto por cada vía, pero lo más importante es que
ambos valores son menores al FD.
AD via Serial 1 21049600
AD via Serial 0 21305600
Por lo tanto ambos caminos son considerados
como SUCESORES
LUCIO LÓPEZ R ING. ELECTRÓNICO 3

LUCIO LÓPEZ R ING. ELECTRÓNICO 4
Calculo Métrica con formula
256
*
10
_
_
int
_
10
_
7
⎥
⎦
⎤
⎢
⎣
⎡
+
= ∑ salida
de
erface
delay
BW
EIGRP
Metrica
21561600
256
*
10
61000
128
10
0
_
_
7
=
⎥
⎦
⎤
⎢
⎣
⎡
+
=
Serial
por
Metrica
21561600
256
*
10
61000
128
10
1
_
_
7
=
⎥
⎦
⎤
⎢
⎣
⎡
+
=
Serial
por
Metrica
21305600
256
*
10
51000
128
10
0
_
_
7
=
⎥
⎦
⎤
⎢
⎣
⎡
+
=
Serial
por
AD
21049600
256
*
10
41000
128
10
1
_
_
7
=
⎥
⎦
⎤
⎢
⎣
⎡
+
=
Serial
por
AD