ISDN Parameters

Configure ISDN between router1 and router2 using Legacy Dial on Demand Routing.

Legacy DDR means all ISDN parameters are configured under the BRI/PRI interface and not under a dialer interface. Any IP packet should represent ‘interesting traffic’ and either router should be able to initiate the call. PPP encapsulation and CHAP authentication should be used. Refer to the table above for ISDN switch-type, IP addresses,

router1(config)#isdn switch-type basic-ni

router1(config)#dialer-list 1 protocol ip permit

router1(config)#username router2 password cisco

router1(config)#interface bri0

router1(config-if)#encap ppp

router1(config-if)#ip address 200.10.1.1 255.255.255.0

router1(config-if)#isdn spid1 32177820010100

router1(config-if)#dialer-group 1

router1(config-if)#dialer map ip 200.10.1.2 name router2 broadcast 7782002

router1(config-if)#ppp authentication chap

router1(config-if)#no shut

router2(config)#isdn switch-type basic-ni

router2(config)#dialer-list 1 protocol ip permit

router2(config)#username router1 password cisco

router2(config)#interface bri0/0

router2(config-if)#encap ppp

router2(config-if)#ip address 200.10.1.2 255.255.255.0

router2(config-if)#isdn spid1 32177820020100

router2(config-if)#dialer-group 1

router2(config-if)#dialer map ip 200.10.1.1 name router1 broadcast 7782001

router2(config-if)#ppp authentication chap

router2(config-if)#no shut

2. Issue the show isdn status command on both router1 and router2. You should see:Layer1: ActiveLayer2: Multiple Frame Established with spid1 valid.

routerx#show isdn status

3. Issue the show interfaces bri0 command on router1. This displays the signaling or D Channel. It should show ‘Up and Up (spoofing)’ if it is ready to handle a call request. Now issue the command show interfaces bri0 1 2. This should show the status of the two data, or B channels.

a. Question: what status are the B channels? Why?

router1# show interfaces bri0

router1# show interfaces bri0 1 2

4. From router1, ping the ISDN interface of router2. This should cause an ISDN call to be initiated and the pings should succeed.

a. Question: which configuration parameter(s) on router1 identifies the interesting traffic that will trigger a call?

router1# ping 200.10.1.2

5. Issue the show isdn status command on router1.

a. Question: what does it show for the ‘Layer 3 Status’?

router1# show isdn status

6. Issue the show interfaces bri0 1 2 command on router1.

a. Question: what is the status of the two B channels?

router1# show interfaces bri0 1 2

LAB 18 – ISDN BRI-BRI using Dialer Profiles

Router IP Address Mask SPID1 Local Tel# ISDN Switch

router1 200.10.1.1 /24 32177820010100 7782001 basic-ni

router2 200.10.1.2 /24 32177820020100 7782002 basic-ni

ISDN Parameters

1. In this lab, you will configure ISDN BRI on router1 and router2 using dialer profiles. With dialer profiles, you are effectively moving some

of the logical ISDN parameters from the physical BRI/PRI interface to a dialer interface. Any IP packet should represent ‘interesting traffic’

in this lab and either router should be able to initiate the call. PPP encapsulation and CHAP authentication should be used.

Refer to the table above for ISDN switch-type, IP addresses, subnet masks, and telephone numbers.

router1(config)# isdn switch-type basic-ni

router1(config)# dialer-list 1 protocol ip permit

router1(config)# username router2 password cisco

router1(config)# interface bri0

router1(config-if)# encap ppp

router1(config-if)# ppp authentication chap

router1(config-if)# isdn spid1 32177820010100

router1(config-if)# dialer pool-member 1

router1(config-if)# no shut

router1(config-if)# interface dialer 1

router1(config-if)# ip address 200.10.1.1 255.255.255.0

router1(config-if)# encap ppp

router1(config-if)# dialer-group 1

router1(config-if)# dialer pool 1

router1(config-if)# dialer remote-name router2

router1(config-if)# dialer string 7782002

router1(config-if)# ppp authentication chap

router2(config)# isdn switch-type basic-ni

router2(config)# dialer-list 1 protocol ip permit

router2(config)# username router1 password cisco

router2(config)# interface bri0/0

router2(config-if)# encap ppp

router2(config-if)# ppp authentication chap

router2(config-if)# isdn spid1 32177820020100

router2(config-if)# dialer pool-member 1

router2(config-if)# no shut

router2(config-if)# interface dialer 1

router2(config-if)# ip address 200.10.1.2 255.255.255.0

router2(config-if)# encap ppp

router2(config-if)# dialer-group 1

router2(config-if)# dialer pool 1

router2(config-if)# dialer remote-name router1

router2(config-if)# dialer string 7782001

router2(config-if)# ppp authentication chap

2. Issue the show isdn status command on both router1 and router2. You should see:

Layer1: Active

Layer2: Multiple Frame Established with spid1 valid.

routerx# show isdn status

3. Issue the show interfaces bri0 command on router1. This displays the signaling or D Channel. It should show ‘Up and Up (spoofing)’ if it is ready to

handle a call request. Now issue the command show interfaces bri0 1 2. This should show the status of the two data, or B channels.

router1# show interfaces bri0

router1# show interfaces bri0 1 2

4. From router1, ping the ISDN interface of router2. This should cause an ISDN call to be initiated and the pings should succeed.

router1# ping 200.10.1.2

6. Issue the show isdn status command on router1. Under the Layer 3 status in the output, it should show one call active.

router1# show isdn status

7. Issue the show interfaces bri0 1 2 command on router1. This shows the status of the B channels (data channels). One of the B channels

should have a status of ‘UP and UP’ indicating a successful call is in progress.

router1# show interfaces bri0 1 2

LAB 19 – ISDN PRI using Dialer Profiles

Router IP Address Mask SPID1 Local Tel# ISDN Switch

router1 201.10.1.1 /24 32177820010100 7782001 basic-ni

router2 201.10.1.2 /24 ------- 7792002 primary-5ess

1. In this lab, you will configure ISDN BRI on router1 and ISDN PRI on router2 using dialer profiles. Router2 has a primary rate ISDN interface (S0/0)

as well as a basic rate ISDN interface. Any IP packet should represent ‘interesting traffic’ in this lab and either router should be able to initiate the call.

PPP encapsulation and CHAP authentication should be used. Refer to the table above for ISDN switch-type, IP addresses, subnet masks, and

telephone numbers. a. Question: if this PRI was being configured in Europe, what would the options be for controller type, framing, and linecode?

b. Question: On the PRI interface statement, what is the significance of :23

router1(config)# isdn switch-type basic-ni

router1(config)# dialer-list 1 protocol ip permit

router1(config)# username router2 password cisco

router1(config)# interface bri0/0

router1(config-if)# encap ppp

router1(config-if)# ppp authentication chap

router1(config-if)# isdn spid1 32177820010100

router1(config-if)# dialer pool-member 1

router1(config-if)# no shut

router1(config-if)# interface dialer 2

router1(config-if)# ip address 201.10.1.1 255.255.255.0

router1(config-if)# encap ppp

router1(config-if)# dialer-group 1

router1(config-if)# dialer pool 1

router1(config-if)# dialer remote-name router2

router1(config-if)# dialer string 7792002

router1(config-if)# ppp authentication chap

router2(config)# isdn switch-type primary-5esss

router2(config)# dialer-list 1 protocol ip permit

router2(config)# username router1 password cisco

router2(config)# controller t1 0/0

router2(config-controller)# framing esf

router2(config-controller)# linecode b8zs

router2(config-controller)# pri-group timeslots 1-24

router2(config-controller)# exit

router2(config)# interface serial0/0:23

router2(config-if)# encapsulation ppp

router2(config-if)# ppp authentication chap

router2(config-if)# dialer pool-member 2

router2(config-if)# no shut

router2(config-if)# interface dialer 2

router2(config-if)# ip address 201.10.1.2 255.255.255.0

router2(config-if)# encapsulation ppp

router2(config-if)# dialer-group 1

router2(config-if)# dialer pool 2

router2(config-if)# dialer remote-name router1

router2(config-if)# dialer string 7782001

router2(config-if)# ppp authentication chap

2. Issue the show isdn status command on both router1 and router2. You should see:Layer1: Active Layer2: Multiple Frame Established routerx# show isdn status

3. From router1, ping the ISDN interface of router2. This should cause an ISDN call to be initiated and the pings should succeed.

router1# ping 201.10.1.2

4. Issue the show isdn status command on router1. Under the Layer 3 status in the output, it should show one call active.

router1# show isdn status

5. Issue the show interfaces bri0 1 2 command on router1. This shows the status of the B channels (data channels). One of the B channels should

have a status of ‘UP and UP’ indicating a successful call is in progress.

router1# show interfaces bri0 1 2

 subnet masks, and telephone numbers.