CCNA Semester 4 Connecting Networks
Page navigation
Network Address Translation/Port Address Translation
Static NAT
| Setting the inside and outside IP address' | ip nat inside source static 192.168.1.1 209.165.49.27 |
|---|---|
| Setting an interface as the inside for NAT | interface fa0/1 ip nat inside |
| Setting an interface as the outside for NAT | interface s0/0/0 ip nat outside |
Dynamic NAT
| Setting up a pool of address for use in NAT | ip nat pool POOL1 192.168.1.1 192.168.1.128 netmask 255.255.255.0 |
|---|---|
| Assigning an ACL to a NAT pool | access-list 1 permit 10.0.0.0 0.0.255.255 pool POOL1 |
| Assigning NAT to the pool | ip nat inside source list 1 pool POOL1 |
| Setting an interface as the inside for NAT | interface fa0/1 ip nat inside |
| Setting an interface as the outside for NAT | interface s0/0/0 ip nat outside |
NAT Overload/PAT
| Assigning an ACL to a NAT pool | list 1 permit 10.0.0.0 0.0.255.255 |
| Assigning the ACL to an interface to use in NAT/PAT | ip nat inside source list 1 interface s0/0/1 overload |
| Assigning the NAT pool to use in NAT/PAT | ip nat pool POOL2 172.16.1.1 netmask 255.255.2555.250 |
| Assigning the ACL to a pool to use in NAT/PAT | ip nat inside source list 1 pool POOL2 overload |
| Setting an interface as the inside for NAT | interface fa0/1 ip nat inside |
| Setting an interface as the outside for NAT | interface s0/0/0 ip nat outside |
Show and debug commands for NAT/PAT
| Clear NAT translations | clear ip nat translation |
| Clear NAT translations for a specific IP range | clear ip nat translation inside 209.165.49.27 192.168.1.1 outside 192.168.1.20 209.165.43.87 overload |
| View the processed NAT translations | show ip nat translations |
| View NAT statistics | show ip nat statistics |
| Debug for NAT | debug ip nat |
| Detailed debug for NAT | debug ip nat detailed |
Dynamic Host Configuration Protocol
Configuring DHCP
| Setting a DHCP pool name | ip dhcp pool POOL1 |
| Specifies the subnet and mask of the DHCP address pool | network 10.1.1.0 /24 |
| Set the default gateway of the DHCP Clients | default-router 10.1.1.1 |
| Configure a Domain Name Server (DNS) | dns-server 10.1.1.1 |
| Configure a domain-name | domain-name lewismchandler.co.uk |
| The IP range the DHCP should not assign to clients | ip dhcp excluded-address 10.1.1.1 10.1.1.10 |
Point-to-Point Protocol
Configuring HDLC and PPP
| Enable HDLC on an interface | encapsulation hdlc |
| Enable HDLC on an interface | encapsulation ppp |
| Set how much of the link PPP can use | ppp quality 15 |
| Set up a new user for PPP | username Bob password 12345 |
| Set up PPP authentication | ppp authentication chap | chap pap | pap chap | pap |
| Set up CHAP hostname | ppp chap hostname ISP |
| Set up CHAP password | ppp chap password secret |
| Debug for PPP authentication | debug ppp authentication |
| Turn off debug | undebug all |
| Setup debug for PPP | debug ppp packet | negotiation |error | chap |
Dial-on-Demand Routing
Configuring DDR Dialer Information
| Set up a new dialer group | dialer-group 1 password 12345 |
| Assign the dialer group to a dialer ACL | dialer-list 1 protocol ip permit | deny | list 1 |
| Set a dialer map? | dialer map ip 129.30.255.253 name Gent 5551000 |
| Configure a timeout for the dialer in seconds | dialer idle-timeout 60 |
| Assign a remote name to an interface | dialer remote-name DIALER-POOL |
| Assign a Dialer pool to an interface | dialer pool 1 |
| Assign a dialer group to an interface | dialer group 1 |
| View dialer | show dialer interface fa0/1 |
| Enable PPP debug | debug ppp authentication |
| Enable PPP authentication debug | debug ppp negotiation |
| Show PPP errors in debug | debug ppp error |
Frame Relay
Basic Frame Relay Configuration
| Setting an interface to use frame relay | encapsulation frame-relay cisco | ietf |
| Sets the LMI type for frame relay | frame-relay lmi-type ansi | cisco | q933i |
Network Time Protocol
Basic NTP Configuration
| Setting the clock | clock set 09:00:00 25 august 2013 |
| Configure a router as an NTP master server | Ntp master 5 |
| Configure a router to use an NTP server | Ntp server 10.10.10.130 |
Page navigation