Cisco Router 826 Routers Software Configuration Guide

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
 protocol ip 200.200.100.254 broadcast
!
bundle-enable
!
ip nat inside source list 1 interface ATM0 overload
ip classless (default)
ip route 0.0.0.0 0.0.0.0 200.200.100.254
!
access-list 1 permit 192.168.1.0 0.0.0.255
!         
end
Integrated Routing and Bridging 
This network shows a user connecting to the...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
The following configuration topics are covered in this section:
Configuring the Default Gateway
Configuring the Ethernet Interface and IRB
Configuring the ATM Interface
Configuring the BVI
Configuring NAT
Configuration Example
To add additional features to this network, see Chapter 3, “Basic Router...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuring the BVI
Follow the steps below to configure the BVI, beginning in global configuration mode.
Configuring NAT
Follow the steps below to configure NAT, beginning in global configuration mode.
Step 4bridge-group 1Specifies the bridge-group number to which the 
ATM interface belongs. 
Step 5no...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuration Example
In the following configuration example, you do not have to enter the commands marked “default.” These 
commands appear automatically in the configuration file generated when you use the show 
running-config command.
bridge irb
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
no...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Figure 2-14 shows a CRB Internet scenario with the voice traffic routed and the data traffic bridged. Both 
the Cisco 827/827-4V router and the Cisco 3640 voice gateway are supporting voice traffic from 
telephones.
Figure 2-14 CRB Internet Scenario
Concurrent routing and bridging are accomplished using...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Specifying CRB and Configuring the Ethernet Interface 
Follow these steps to specify CRB and configure the Ethernet interface, beginning in global 
configuration mode.
Configuring the ATM Interface and Subinterfaces
Follow these steps to configure the ATM interface and subinterfaces, beginning in global...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuring the POTS Dial Peers
Follow the steps below to configure the POTS dial peers, beginning in global configuration mode. 
Ta b l e 2 - 3 shows the destination telephone number and port for each dial peer POTS port.
Configuring VoIP Dial Peers for H.323 Signaling
Use this table to configure VoIP dial...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
78-14565-03
Chapter 2      Network Scenarios
Configuring the DHCP Server
Configuration Example
In the following configuration example, you do not have to enter the commands marked “default.” These 
commands appear automatically in the configuration file generated when you use the show 
running-config command.
ip subnet-zero
!
bridge crb
!
interface Ethernet0
no ip address
no ip...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Voice Scenario
port 2
!
dial-peer voice 1200 voip
destination-pattern 12123452222
codec g711ulaw
session target ipv4:1.0.0.2
!
dial-peer voice 103 pots
destination-pattern 14085273333
port 3
!
dial-peer voice 1300 voip
destination-pattern 12123453333
codec g711ulaw
session target ipv4:1.0.0.2
!
dial-peer voice 104 pots...

  
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Cisco 826, 827, 828, 831, 836, and 837 and Cisco SOHO 76, 77, 78, 91, 96, and 97 Routers Software Configuration Guide
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Chapter 2      Network Scenarios
Voice Scenario
Data Network
Figure 2-15 shows a data network with traffic routing through the Cisco 827 router and then switching 
onto the ATM interface. 
Figure 2-15 Data Network 
The Cisco 827 router is connected through the ATM interface through one PVC and it is associated with 
a QoS policy called mypolicy. Data traffic coming...