Learning by Doing: CISCO Certified Network ... - SCN Research

3. Configure the ISDN interface on “smarts.” You will be configuring the ip
address, “no shut,” dialer group, and a dialer map (how to get from here to
there).
smarts(config)#int bri0/0
smarts(config-if)#ip address 192.168.1.1 255.255.255.0
smarts(config-if)#no shut
smarts(config-if)#dialer-group 1
smarts(config-if)#dialer map ip 192.168.1.2 name kissane 5552000
4. Configure the ISDN interface on “kissane” with similar commands. You will
be configuring the ip address, the isdn spid (service profile identifiers), and a
dialer map (how to get from here to there).
kissane(config)#int bri0/0
kissane(config-if)#ip address 192.168.1.2 255.255.255.0
kissane(config-if)#no shut
kissane(config-if)# dialer-group 1
kissane(config-if)#dialer map ip 192.168.1.1 name smarts 5551000
5. Test the connection using ping, sh ip route, and sh cdp nei from BRI0/0 to
BRI0/0. Use “show isdn status” to inspect the status of the BRI interfaces.
You should see:
smarts#sh isdn status
Global ISDN Switchtype = basic-5ess
ISDN BRI0/0 interface
dsl 0, interface ISDN Switchtype = basic-5ess
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 86, Ces = 1, SAPI = 0, State =
MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
1 Active Layer 3 Call(s)
Activated dsl 0 CCBs = 1
CCB:callid=8001, sapi=0, ces=1, B-chan=1, calltype=DATA
The Free Channel Mask: 0x80000002
Total Allocated ISDN CCBs = 1
smarts#
Here we can see an “active” good ISDN connection.
6. Try to ping the loopback. You should not be able to see it. It should not have
shown up in the ip routing table either. The ISDN line comes up, stays active,
and then shuts off pretty quickly. Its actually faster than the routing protocol
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