Ccna4 Commands

CCNA4: Commands

WAN Technologies

Cisco Networking Academy Program CCNA 4: WAN Technologies v3.1.1

CCNA 4 Commands

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Created by Tijl De Troyer

1

Module 1: Scaling IP Addresses_____________________________________________3 1.1

NAT and PAT_____________________________________________________________3

1.1.1 1.1.2 1.1.3 1.1.4 1.1.5

1.2

DHCP___________________________________________________________________5

1.2.1 1.2.2 1.2.3

2

3

4

Configuring static NAT_________________________________________________________3 Configuring dynamic NAT______________________________________________________3 Configuring NAT Overload (PAT)________________________________________________4 Verifying NAT and PAT configuration_____________________________________________4 Troubleshooting NAT and PAT configuration________________________________________4 Configuring DHCP Operation____________________________________________________5 Verifying DHCP Operation______________________________________________________5 Troubleshooting DHCP Configuration_____________________________________________5

Module 3: Point-to-Point Protocol (PPP)_____________________________________6 2.1

Configuring HDLC Encapsulation____________________________________________6

2.2

Troubleshooting a Serial Interface____________________________________________6

2.3

Configuring PPP Encapsulation______________________________________________6

2.4

Configuring PPP Authentication_____________________________________________6

2.5

Verifying the Serial PPP Encapsulation Configuration___________________________7

2.6

Troubleshooting the Serial PPP Encapsulation Configuration_____________________7

Module 3: ISDN and DDR_________________________________________________7 3.1

Configuring ISDN BRI_____________________________________________________7

3.2

Configuring ISDN PRI_____________________________________________________8

3.3

Verifying the ISDN Configuration____________________________________________8

3.4

Troubleshooting the ISDN Configuration______________________________________8

3.5

Defining Static Routes for DDR______________________________________________8

3.6

Specifying Interesting Traffic for DDR________________________________________9

3.7

Configuring DDR Dialer Information_________________________________________9

3.8

Configuring Dialer Profiles__________________________________________________9

3.9

Verifying the DDR Configuration____________________________________________10

Module 5: Frame Relay__________________________________________________10 4.1

Basic Frame Relay Configuration___________________________________________10

4.2

Verifying Operation and Confirming Connectivity_____________________________10

4.3

Configuring Subinterfaces__________________________________________________10

4.4

Configuring Optional Commands___________________________________________11

CCNA 4 Commands

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Created by Tijl De Troyer

1 Module 1: Scaling IP Addresses 1.1

1.1.1

NAT and PAT Configuring static NAT

Router(config)#ip nat inside source static local-ip global-ip Router(config)#interface type number //inside interface Router(config-if)#ip nat inside Router(config-if)#interface type number //outside interface Router(config-if)#ip nat outside Example: Router(config)#ip nat inside source static 10.1.1.2 179.9.8.80 Router(config)#interface eth0 //inside interface Router(config-if)#ip nat inside Router(config-if)#interface ser0 //outside interface Router(config-if ip nat outside

1.1.2

Configuring dynamic NAT

Router(config)#ip nat pool name start-ip end-ip {netmask netmask | prefix-length prefix-length} Router(config)#access-list access-list-number permit source [source-wildcard] Router(config)#ip nat inside source list access-list-number pool name Router(config)#interface type number //inside interface Router(config-if)#ip nat inside Router(config-if)#interface type number //outside interface Router(config-if)#ip nat outside Example: Router(config)#ip nat pool nat-pool1 179.9.8.80 179.9.8.95 netmask 255.255.255.0 Router(config)#access-list 1 permit 10.0.0.0 0.0.255.255 Router(config)#ip nat inside source list 1 pool nat-pool1 Router(config)#interface eth0 //inside interface Router(config-if)#ip nat inside Router(config-if)#interface ser0 //outside interface Router(config-if)#ip nat outside

CCNA 4 Commands

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1.1.3

Configuring NAT Overload (PAT)

Router(config)#list access-list-number permit source [source-wildcard] Router(config)#ip nat inside source list access-list-number interface interface overload Router(config)#ip nat pool name ip-address {netmask netmask | prefix-length prefix-length} Router(config)#ip nat inside source list access-list-number pool name overload Router(config)#interface type number //inside interface Router(config-if)#ip nat inside Router(config-if)#interface type number //outside interface Router(config-if)#ip nat outside Example: Router(config)#access-list 1 permit 10.0.0.0 0.0.255.255 Router(config)#ip nat inside source list 1 interface serial0 overload Router(config)#ip nat pool nat-pool2 179.9.8.20 netmask 255.255.255.240 Router(config)#ip nat inside source list 1 pool nat-pool2 overload Router(config)#interface eth0 //inside interface Router(config-if)#ip nat inside Router(config-if)#interface ser0 //outside interface Router(config-if)#ip nat outside

1.1.4

Verifying NAT and PAT configuration

clear ip nat translation clear ip nat translation inside global-ip local-ip [outside local-ip global-ip] clear ip nat translation protocol inside global-ip global-port local-ip local-port [outside local-ip local-port global-ip global-port] show ip nat translations show ip nat statistics

1.1.5

Troubleshooting NAT and PAT configuration

debug ip nat debug ip nat detailed

CCNA 4 Commands

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1.2 1.2.1

DHCP Configuring DHCP Operation

Router(config)#ip dhcp pool name Router(config-dhcp)#network network-number [mask|/prefix-length] Router(config-dhcp)#domain-name domain Router(config-dhcp)#dns-server address [address2…address8] Router(config-dhcp)#netbios-name-server address [address2…address8] Router(config-dhcp)#default-router address [address2…address8] Router(config-dhcp)#lease {days[hours][minutes] | infinite} Router(config)#ip dhcp excluded-address ip-address [end-ip-address] If dhcp-client and dhcp-server are not on the same segment, and separated by a router, the DHCPDISCOVER broadcasts are blocked. By using the helper address feature, a router can be configured to accept a broadcast request for a UDP service and then forward it as a unicast to a specific IP address. Example: Router(config-if)#ip helper-address address

1.2.2

Verifying DHCP Operation

Router#show Router#show Router#show Router#show

1.2.3

ip ip ip ip

dhcp dhcp dhcp dhcp

binding [address] conflict [address] database [url] server statistics

Troubleshooting DHCP Configuration

Router#debug Router#debug Router#debug Router#debug

ip ip ip ip

CCNA 4 Commands

dhcp dhcp dhcp dhcp

server server events server packets server linkage

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2 Module 3: Point-to-Point Protocol (PPP) In module 2: no commands

2.1

Configuring HDLC Encapsulation

Router(config-if)#encapsulation hdlc

2.2

Troubleshooting a Serial Interface

Router#show interface s0 Router#show controllers s0 Router#debug serial interface Router#debug arp Router#debug frame-relay lmi Router#debug frame-relay events Router#debug ppp negotiation Router#debug ppp packet Router#debug ppp errors Router#debug ppp chap

2.3

Configuring PPP Encapsulation

Router#config terminal Router(config)#interface serial 0 Router(config-if)#encapsulation ppp Router(config-if)#compress [predictor | stac] Router(config-if)#ppp quality number_1-100 Router(config-if)#ppp multilink

2.4

Configuring PPP Authentication

Router(config)#hostname name //case sensitive Router(config)#username name password password // Router(config)#service password-encryption Router(config-if)#encapsulation ppp Router(config-if)#ppp authentication {chap | chap pap | pap chap | pap} Router#show interface s0 Router(config-if)#ppp chap hostname hostname Router(config-if)#ppp chap password secret

CCNA 4 Commands

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2.5

Verifying the Serial PPP Encapsulation Configuration

Router#show interfaces Router#debug ppp authentication Router#undebug all

Troubleshooting the Serial PPP Encapsulation Configuration

2.6

Router#debug ppp {packet | negotiation |error | chap}

3 Module 3: ISDN and DDR 3.1

Configuring ISDN BRI

Router(config)#isdn switch-type switch-type Router(config-if)#isdn switch-type switch-type

//basic-ni for national ISDN //this interface only

Router(config)#interface bri interface-number Router(config-if)#isdn spid1 spid-number [ldn] Router(config-if)#isdn spid2 spid-number [ldn]

//ldn: local dial number

Router(config)#isdn switch-type none Example: Router(config)#isdn switch-type basic-ni Router(config)#interface bri 0/0 Router(config-if)#isdn spid1 51055540000001 5554000 Router(config-if)#isdn spid1 51055540010001 5554001

CCNA 4 Commands

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3.2

Configuring ISDN PRI

Routers connect to PRI by using T1/E1, there is no “interface pri”! Router(config)#isdn switch-type switch-type

//primary-ni for national ISDN

Router(config)#controller {t1 | e1} {slot/port} Router(config-controller)#framing {sf | esf} //for T1 Router(config-controller)#framing {crc4 | no-crc4} [australia] Router(config-controller)#linecode {ami | b8zs | hdb3 } Router(config-controller)#pri-group [timeslots range] Router(config)#interface serial {slot/port: | unit:} {23 | 15}

//for E1

Attention: S0/0.23 refers to a subinterface (for example: frame relay, vlans) S0/0:23 refers to a channel (PRI)

3.3

Verifying the ISDN Configuration

Router#show Router#show Router#show Router#show

3.4

isdn status interfaces bri0/0 isdn active dialer

Troubleshooting the ISDN Configuration

Router#debug isdn q921 Router#debug isdn q931

3.5

Defining Static Routes for DDR

Router(config)#ip route net-prefix mask {address | interface} [distance] [permanent] Example: Router(config)#ip route 10.40.0.0 255.255.0.0 10.1.0.1 Router(config)#ip route 0.0.0.0 0.0.0.0 10.1.0.2

CCNA 4 Commands

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//default route

Created by Tijl De Troyer

3.6

Specifying Interesting Traffic for DDR

Router(config)#dialer-list dialer-group-num protocol protocol-name {permit | deny | list access-list-number} Example: Router(config)#dialer-list 1 protocol ip permit

//without access-list, all ip traffic

Router(config)#dialer-list 1 protocol ip list 101 Router(config)#access-list 101 deny tcp any any eq ftp Router(config)#access-list 101 deny tcp any any eq telnet Router(config)#access-list 101 permit ip any any

3.7

//with access-list //no ftp //no telnet //all other ip

Configuring DDR Dialer Information

Router(config)#username username password password Router(config)#interface bri interface-number Router(config-if)#encapsulation ppp Router(config-if)#ppp authentication chap Router(config-if)#ip address ip-address subnet Router(config-if)#dialer-group group-number

//same number as with dialer-list

Router(config-if)#dialer map protocol next-hop-address [name hostname] [speed 56 | 64] [broadcast] dial-string Example: Remote(config-if)#dialer map ip 129.30.255.253 name Gent 5551000 Router(config-if)#dialer idle-timeout seconds

3.8

Configuring Dialer Profiles

Router(config)#interface dialer dialer-number Router(config-if)#ip address ip-address subnet Router(config-if)#encapsulation ppp Router(config-if)#ppp authentication chap Router(config-if)#dialer remote-name remote-name Router(config-if)#dialer string ldn Router(config-if)#dialer pool pool-number Router(config-if)#dialer group group-number Router(config)#interface bri0/0 Router(config-if)#dialer pool-member number priority priority-number

CCNA 4 Commands

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3.9

Verifying the DDR Configuration

Router#show dialer interface interface Router#show isdn active Router#debug ppp authentication Router#debug ppp negotiation Router#debug ppp error

4 Module 5: Frame Relay 4.1

Basic Frame Relay Configuration

Router(config)#interface serial interface-number Router(config-if)#ip address ip-address subnet Router(config-if)#encapsulation frame-relay [cisco | ietf] Router(config-if)#frame-relay lmi-type {ansi | cisco | q933i} Router(config-if)#bandwith kilobits Router(config-if)#frame-relay inverse-arp [protocol] [dlci] Router(config-if)#no shutdown

4.2

Verifying Operation and Confirming Connectivity

Router#show Router#show Router#show Router#show

4.3

//11.1 or earlier

frame-relay pvc interfaces serial frame-relay map frame-relay lmi

Configuring Subinterfaces

Router(config)#interface serial number Router(config-if)#no ip address Router(config-if)#interface serial number.subinterface-number {multipoint | pointto-point} Router(config-if)#ip unnumbered interface

//point-to-point and using ip

Router(config-if)#frame-relay interface-dlci dlci-number

CCNA 4 Commands

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4.4

Configuring Optional Commands

Router(config-if)#frame-relay map protocol protocol-address dlci [broadcast] [ietf | cisco | payload-compress packet-by-packet] //when inverse arp disabled Router(config-if)#keepalive number Router(config-if)#frame-relay local-dlci number

CCNA 4 Commands

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Created by Tijl De Troyer