Newsgroup: it.comp.reti.cisco
Titolo: Equal Cost Load Balancing con EIGRP...domandina

Salve a tutti.
Sto studiando per "BSCI", in particolare sono fermo su eigrp. Pensavo
di aver compreso come funziona (quanto meno in linea di massima), ma
qualcosa non va...
Ho questa topologia: 
http://img43.imageshack.us/img43/9017/eigrplab0.jpg
Che mi porta a questa tabella di routing per R1 (excerpt):
 
172.16.0.0/30
 is subnetted, 3 subnets
D       172.16.0.0 [90/284160] via 172.16.0.10, 02:02:12, Ethernet1/0
                   [90/284160] via 172.16.0.6, 02:02:12, Ethernet1/1
Secondo i miei studi, un ping verso 172.16.0.1, dovrebbe essere
suddivisto equamente tra 172.16.0.10 e 172.16.0.6.
Tuttavia, usando debug ip packet e pingando, ricevo:
R1#ping 172.16.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 172.16.0.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/8/8 ms
R1#debug ip packet
*Mar  1 02:09:00.879: IP: tableid=0, s=172.16.0.5 (local),
d=172.16.0.1 (Ethernet1/1), routed via FIB
*Mar  1 02:09:00.879: IP: s=172.16.0.5 (local), d=172.16.0.1
(Ethernet1/1), len 100, sending
*Mar  1 02:09:00.887: IP: tableid=0, s=172.16.0.1 (Ethernet1/1),
d=172.16.0.5 (Ethernet1/1), routed via RIB
*Mar  1 02:09:00.887: IP: s=172.16.0.1 (Ethernet1/1), d=172.16.0.5
(Ethernet1/1), len 100, rcvd 3
*Mar  1 02:09:00.887: IP: tableid=0, s=172.16.0.5 (local),
d=172.16.0.1 (Etherne1/1), routed via FIB
*Mar  1 02:09:00.887: IP: s=172.16.0.5 (local), d=172.16.0.1
(Ethernet1/1), len 100, sending
*Mar  1 02:09:00.895: IP: tableid=0, s=172.16.0.1 (Ethernet1/1),
d=172.16.0.5 (Ethernet1/1), routed via RIB
*Mar  1 02:09:00.895: IP: s=172.16.0.1 (Ethernet1/1), d=172.16.0.5
(Ethernet1/1), len 100, rcvd 3
*Mar  1 02:09:00.895: IP: tableid=0, s=172.16.0.5 (local),
d=172.16.0.1 (Ethernet1/1), routed via FIB
*Mar  1 02:09:00.895: IP: s=172.16.0.5 (local), d=172.16.0.1
(Ethernet1/1), len 100, sending
*Mar  1 02:09:00.903: IP: tableid=0, s=172.16.0.1 (Ethernet1/1),
d=172.16.0.5 (Ethernet1/1), routed via RIB
*Mar  1 02:09:00.903: IP: s=172.16.0.1 (Ethernet1/1), d=172.16.0.5
(Ethernet1/1), len 100, rcvd 3
*Mar  1 02:09:00.903: IP: tableid=0, s=172.16.0.5 (local),
d=172.16.0.1 (Ethernet1/1), routed via FIB
*Mar  1 02:09:00.903: IP: s=172.16.0.5 (local), d=172.16.0.1
(Ethernet1/1), len 100, sending
*Mar  1 02:09:00.911: IP: tableid=0, s=172.16.0.1 (Ethernet1/1),
d=172.16.0.5 (Ethernet1/1), routed via RIB
*Mar  1 02:09:00.911: IP: s=172.16.0.1 (Ethernet1/1), d=172.16.0.5
(Ethernet1/1), len 100, rcvd 3
*Mar  1 02:09:00.911: IP: tableid=0, s=172.16.0.5 (local),
d=172.16.0.1 (Ethernet1/1), routed via FIB
*Mar  1 02:09:00.911: IP: s=172.16.0.5 (local), d=172.16.0.1
(Ethernet1/1), len 100, sending
*Mar  1 02:09:00.919: IP: tableid=0, s=172.16.0.1 (Ethernet1/1),
d=172.16.0.5 (Ethernet1/1), routed via RIB
*Mar  1 02:09:00.919: IP: s=172.16.0.1 (Ethernet1/1), d=172.16.0.5
(Ethernet1/1), len 100, rcvd 3
Quindi tutti i pacchetti prendono la Ethernet1/1, passando SOLO per
172.16.0.6. E' un comportamento che non mi torna, qualcuno mi saprebbe
illuminare?
Grazie in anticipo.
Saluti!
Luca

 
ma stai usando routers veri o simulatori?

On 12 Ago, 02:36, Francesco Paolini <REMOVEMENOWfrance...@e-

Uso GNS3, ma non credo sia lui il problema. Mi hanno detto che sto
utilizzando "per destination routing" e dovrei leggere la
documentazione di CEF...
:D
Grazie

Ciao
a quanto ricordo.....
Il funzionamento che ti aspetti è quello che avviene se abiliti il CEF
e il load sharing per packet.
Ad ora come hai configurato le interfacce?
Paolo