Effacer la configuration: erase startup-config puis faire un reload
Pour voir les voisins: show cdp neighbors
Empreinter des bits de l'identifiant hote pour les ajouter à celui du réseau pour le diviser.
Class A ( 0 - 127 ) mask naturel 8bits
Class B ( 128 - 191 ) mask naturel 16 bits
Class C ( 192 - 224 ) mask naturel 24Bits
To calcul subnet: http://www.subnet-calculator.com/
| 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
| 128 | 64 | 32 | 16 | 8 | 4 | 2 | 1 |
| 128 | 192 | 224 | 240 | 248 | 252 | 254 | 255 |
To suspend a session from a Cisco equipment to another: <ctrl>-<shft>-6 suivi de x ou ( <ctrl>-<shft>-9 pr AZERTY )
Show ip dhcp binding: show lease of DHCP configured by SDM
Debug on VTTY: terminal monitor / terminal no monitor
Enable routing OSPF
- Create loopback I/F with ip 192.168.x.x for example
interface loopback 0
ip add 192.168.x.x 255.255.255.0
- Enable the OSPF protocol with process id 100:
router ospf 100
- Enable OSPF on loopback and all I/F of the router
network 192.168.x.x 0.0.0.0 area 0
network intranet / mask area 0
- Enable OSPF authentication plain text
interface fast, serial 0/n
ip ospf authentication key password
ip ospf authentication