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<p><font face="Arial"><b><font size="4" color="green">Lab: </font></b><font size="4" color="#008000"><b>ISDN</b></font></font><font color="#008000" size="4" face="Arial">:
Integrated Services Digital Network</font></p>
<p><font face="Arial"><i>Objective</i>: To understand how
to setup ISDN on Cisco Routers.<br>
<i>Lab Equipment</i>: We will be using eRouter 1 & eRouter 2 To select
eRouter 1 click on the button eRouter1 at the top of your screen. </p>
</font>
<font face="Times New Roman">
<p><font color="#FF00FF"><b>1.</b></font> Setup the connection between eRouter 1 (hostname eRouter1), and Router
2 (hostname eRouter2) using the BRI ports. eRouter 1 will have an IP address of
<b>42.34.10.1</b> with a
<b>255.0.0.0</b> subnet mask . </p>
</font>
<font face="Arial, Helvetica">
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>Router>enable</option>
<option>Router#conf t</option>
<option>Router(config)#hostname eRouter1</option>
<option>eRouter1(config)#interface BRI0</option>
<option>eRouter1(config-if)#ip address42.34.10.1 255.0.0.0</option>
<option>eRouter1(config-if)#no shut</option>
<option>eRouter1(config-if)#end</option>
</select></font></p>
</font>
<font face="Times New Roman">
<p>Now connect to eRouter 2 by clicking on the eRouter 2 button and give it an IP address of
<b>42.34.10.121</b> with a <b>255.0.0.0</b> subnet mask.</p>
</font>
<font face="Arial, Helvetica">
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>Router enable</option>
<option>eRouter#conf t</option>
<option>eRouter(config)#hostname eRouter2</option>
<option>eRouter2(config)#interface BRI0</option>
<option>eRouter2(config-if)#ip address 42.34.10.121 255.0.0.0</option>
<option>eRouter2(config-if)#no shut</option>
<option>eRouter2(config-if)#end</option>
</select></font></p>
<font face="Times New Roman">
<p><font color="#FF00FF"><b>2.</b></font>
Lets go back to eRouter 1 and start to setup ISDN. The first thing we need
to do is specify the ISDN switch we will be using. If you used the
defaults the switch-type is basic-ni. There are two different places you can
tell the router what ISDN switch-type you are using, you can specify the command
globally for all BRI interfaces on the router, or you can make the switch-type
interface specific. We are going to make it global, so now enter the
switch-type globally on your router.</p>
</font>
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1#conf t</option>
<option>eRouter1(config)#isdn switch-type basic-ni</option>
</select></font></p>
</font>
<font face="Times New Roman">
<p><b><font color="#FF00FF">3.</font></b> We will need to give some specific information to this BRI
interface. The first thing we will give it is the ISDN SPID (Service Profile
Identifier). The SPID needs to be set on your BRI interface with the
</font>
<font face="Terminal" size="2">
isdn
spid1</font><b><font face="Times New Roman">
</font>
</b>
<font face="Times New Roman">
command. <a name="18392">A </a><a name="19287">SPID is a number
supplied by the ISP to identify the</a><a name="19288"> line configuration of
the BRI service. Each SPID points to line setup and configuration information on
the ISP's ISDN switch. If you used the defaults for the ISDN Switch your
SPID for eRouter 1 will be 32177820010100.</a></p>
</font>
<font face="Arial">
<p><a name="19288"> </a><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1(config)#interface Bri 0</option>
<option>eRouter1(config-if)#isdn spid1 32177820010100</option>
</select></p>
</font>
<font face="Times New Roman">
<p><font color="#FF00FF"><b>4.</b></font> Now that you have setup the switch-type and SPID you should have layer 1
connectivity. Layer 1 connectivity is the establishment of connectivity
between the ISDN switch and the router. To verify you have layer 1
connectivity use the
</font>
<font face="Terminal" size="2">
show isdn status</font><font face="Times New Roman">
command and make sure you have Multi-Frame
Established in layer 2.</p>
</font>
<font face="Arial">
<p><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1(config-if)#exit</option>
<option>eRouter1(config)#exit</option>
<option>eRouter1#show isdn status</option>
</select></p>
</font>
<p><font face="Times New Roman"><b><font color="#FF00FF">5.</font></b> Now we want to setup the number we will need to
dial on the ISDN switch to establish a layer 3 connection, this is called the
dialer string. Set the dialer string on your eRouter 1 BRI 0, if you are
using the default configuration use "<b>7782001</b>"</font></p>
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1#config t</option>
<option>eRouter1(config)#interface bri 0</option>
<option>eRouter1(config-if)#dialer string 7782001</option>
</select></font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">6.</font></b> Because ISDN costs money when the connection is up
we only want to have an active connection when we are using it. There are
multiple ways of doing this, we will be using dialer groups and dialer lists.
A dialer list is a list either permitting or denying traffic. This means
we will specify a dialer-list of <i>protocol ip permit</i>. What that means is
any IP traffic will be permitted. To setup a dialer list use the command
dialer-list in the global config mode. </font></p>
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1(config-if)#exit</option>
<option>eRouter1(config)#dialer-list 1 protocol ip permit</option>
</select></font></p>
<p><font face="Times New Roman"><font color="#FF00FF"><b>7.</b></font> Now we have a dialer-list but we have not associated
that list with any interfaces. We will need to add that list to our ISDN
BRI interface using the dialer-group command. </font></p>
<p><font face="Arial"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter1(config)#interface bri 0</option>
<option>eRouter1(config-if)#dialer-group 1</option>
</select></font></p>
<p><font face="Times New Roman">Lets go over what we have done again:</font></p>
<p><font face="Times New Roman"> 1. First we told the router what type
of ISDN switch it would be connecting to.<br>
2. Second we specified the SPID we will be using to
communicate with the ISDN switch.<br>
3. Third we told the router what number it will be dialing to
connect with the other router.<br>
4. Fourth we created a global dialer list to allow our IP
traffic<br>
5. Then we associated the dialer list with our ISDN BRI 0
interface using the Dialer-group command.</font></p>
<p><font face="Times New Roman"><font color="#FF00FF"><b>8.</b></font> Now we have setup ISDN on eRouter 1 we need to do the
same steps for eRouter 2, but with some slight modifications. Below is a summary of what we did for
eRouter 1. </font></p>
<p><font face="Times New Roman"> 1. We specified the ISDN switch we would be
connecting to (Basic-ni).<br>
2. We specified the SPID we will be using to communicate with the
ISDN switch (32177820010100).<br>
3. We told the router what number it dials in order to connect
with the other router (7782001).<br>
4. We created a global dialer list to allow our IP
traffic<br>
5. Then we associated the dialer list with our ISDN BRI 0
interface using the Dialer-group command.</font></p>
<p align="left"><font face="Times New Roman"><font color="#FF00FF"><b>9.</b></font> Now connect to eRouter 2 using the button
at the top labeled eRouter 2. The first thing we need to do is
specify the ISDN switch we will be using. If you used the defaults the
switch-type is basic-ni. Enter the switch-type globally on your router.</p>
</font>
<font face="Arial, Helvetica">
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>Router#conf t</option>
<option>Router(config)#hostname eRouter2</option>
<option>eRouter2(config)#isdn switch-type basic-ni</option>
</select></font></p>
</font>
<font face="Times New Roman">
<p><b><font color="#FF00FF">10.</font></b> Next we will need to give the SPID for this interface.
<a name="19288"> If you used the defaults for the ISDN Switch your SPID for
eRouter 2 will be 32177820020100.</a></p>
<p><a name="19288"> </a><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2(config)#interface Bri 0</option>
<option>eRouter2(config-if)#isdn spid1 32177820020100</option>
</select></p>
<p><font color="#FF00FF"><b>11.</b></font> Now that you have setup the switch-type and SPID
you should have layer 1 connectivity. To verify that you have layer 1
connectivity use the
</font>
<font face="Terminal" size="2">
show isdn status</font><font face="Times New Roman">
command and make sure you have Multi-Frame Established in layer 1.</p>
<p><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2(config-if)#exit</option>
<option>eRouter2(config)#exit</option>
<option>eRouter2#show isdn status</option>
</select></p>
</font>
<p><font face="Times New Roman"><b><font color="#FF00FF">12.</font></b> Now we want to setup the number we will need to
dial on the ISDN switch to establish a layer 3 connection, this is called the
dialer string. Set the dialer string on your eRouter 2 BRI 0. If you are
using the default configuration use "7782002"</font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2#config t</option>
<option>eRouter2(config)#interface bri 0</option>
<option>eRouter2(config-if)#dialer string 7782002</option>
</select></font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">13.</font></b> Setup a
dialer-list on your eRouter 2 to permit all IP traffic. To setup a dialer
list use the command </font><font face="Terminal" size="2">dialer-list</font><font face="Times New Roman"> in the Global Config mode. </font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2(config-if)#exit</option>
<option>eRouter2(config)#dialer-list 1 protocol ip permit</option>
</select></font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">14. </font></b>Now we have a dialer-list but we have not associated
that list with any interfaces. We will need to add that list to our ISDN
BRI interface using the dialer-group command. </font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2(config)#interface bri 0</option>
<option>eRouter2(config-if)#dialer-group 1</option>
</select></font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">15.</font></b> If we have both Routers configured for ISDN lets see
if we can ping the other side. From eRouter 2 you want to ping eRouter 1's BRI 0 interface (IP address 42.34.10.1)</font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2(config-if)#exit</option>
<option>eRouter2(config)#exit</option>
<option>eRouter2#ping 42.34.10.1</option>
</select></font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">16.</font></b> If you
have a successful ping, Congratulations you have ISDN working. Verify this
with the </font><font face="Terminal" size="2">show isdn status</font><font face="Times New Roman"> command. </font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2#show isdn status</option>
</select></font></p>
<p><font face="Times New Roman">Look at your layer 3 settings, it should say you have 1
Active layer 3 Call, you can also see in layer 2 that your SPID is valid. This
is good for troubleshooting.</font></p>
<p><font face="Times New Roman"><b><font color="#FF00FF">17.</font></b> You can also view your settings in your
<i>running-config</i>.</font></p>
<p><font face="Times New Roman"><select size="1" name="name">
<option>- Click Here to View Answer -</option>
<option>eRouter2#show running-config</option>
</select></font></p>
<p> </p>
<p><font face="Arial" size="2"><span class="724482219-24092001">Copyright (c)
1998-2003 Boson Software, Inc. All Rights Reserved.</span></font></p>
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