Configuration routeur cisco 2801

Bonjour,
je configure l'interface ethernet d'un routeur 2801mais j'ai toujours line protocole is down :

PN-test#sh interfaces fastEthernet 0/0
FastEthernet0/0 is up, line protocol is down
Hardware is Gt96k FE, address is 001b.d501.ed32 (bia 001b.d501.ed32)
Internet address is 172.30.5.120/27
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Auto-duplex, Auto Speed, 100BaseTX/FX
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog
0 input packets with dribble condition detected
106 packets output, 6668 bytes, 0 underruns
0 output errors, 0 collisions, 1 interface resets

Pas de changement avec la route statique que je défini.