Cisco Router 800 Series Software Configuration Guide

 
4-73
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring the DHCP Server
Figure 4-14 CRB Internet Scenario
Concurrent routing and bridging are accomplished using different subinterfaces 
under the ATM interface. Each ATM subinterface that is created is treated 
uniquely in the network.
Data traffic in this scenario is bridged across ATM subinterface 2, using 
AAL5SNAP encapsulation. A single PVC is created with a vpi/vci value of 8/35.
Voice traffic is...

 
Chapter 4      Network Scenarios
Configuring the DHCP Server
4-74
Cisco 800 Series Software Configuration Guide
78-5372-06
The following configuration topics are covered in this section:
Specifying CRB and Configuring the Ethernet Interface
Configuring the ATM Interface and Subinterfaces
Configuring Voice Ports
Configuring the POTS Dial Peers
Configuring VoIP Dial Peers for H.323 Signaling
Configuration Example
To add additional features to this network, see Chapter 7, “Router Feature...

 
4-75
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Configuring the DHCP Server
Configuring the ATM Interface and Subinterfaces
Follow the steps below to configure the ATM interface and subinterfaces, 
beginning in global configuration mode.
Configuring Voice Ports 
To configure voice ports, you must configure the POTS dial peers and the VoIP 
dial peers for the signaling type; in this case, the type is H.323. 
Configuring the POTS Dial Peers
Complete the...

 
Chapter 4      Network Scenarios
Configuring the DHCP Server
4-76
Cisco 800 Series Software Configuration Guide
78-5372-06
Configuring VoIP Dial Peers for H.323 Signaling
Follow the steps below to configure VoIP dial peers for H.323 signaling, 
beginning in global configuration mode. Ta b l e 4 - 4 shows the destination 
telephone number for each voice dial peer. Command Task
Step 1dial-peer voice number POTSEnter configuration mode for the dial peer. 
Step 2destination-pattern stringDefine the...

 
4-77
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      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 
that is generated when you use the show running-config command.
ip subnet-zero
!
bridge crb
!
interface Ethernet0
no ip address
no ip directed-broadcast (default)
bridge-group 1
!
interface ATM0
no ip...

 
Chapter 4      Network Scenarios
Configuring the DHCP Server
4-78
Cisco 800 Series Software Configuration Guide
78-5372-06 bridge-group 1
!
ip classless (default)
!
bridge 1 protocol ieee
!
voice-port 1
local-alerting
!
voice-port 2
local-alerting
!
voice-port 3
local-alerting
!
voice-port 4
local-alerting
!
dial-peer voice 101 pots
destination-pattern 14085271111
port 1
!
dial-peer voice 1100 voip
destination-pattern 12123451111
codec g711ulaw
session target ipv4:1.0.0.2
!
dial-peer voice 102 pots...

 
4-79
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Voice Scenario
!
dial-peer voice 1400 voip
destination-pattern 12123454444
codec g711ulaw
session target ipv4:1.0.0.2
!
end
Voice Scenario
This section describes a voice scenario configuration using the Cisco 827 router 
in an H.323 signaling environment. 
Setting up voice on the router actually includes two configurations—one for data 
and one for voice. When you have completed the configuration for the data...

 
Chapter 4      Network Scenarios
Voice Scenario
4-80
Cisco 800 Series Software Configuration Guide
78-5372-06
Figure 4-15 Data Network 
The Cisco 827 router is connected through the ATM interface through one PVC. 
The PVC is associated with a QoS policy called mypolicy. Data traffic coming 
from the Ethernet must have an IP precedence value of less than 5 (critical) to 
distinguish it from voice traffic. 
EIGRP is configured to send hello packets every 5 seconds to inform neighboring 
routers that it...

 
4-81
Cisco 800 Series Software Configuration Guide
78-5372-06
Chapter 4      Network Scenarios
Voice Scenario
This scenario includes configuration tasks and a configuration example. To add 
more features to this network, see Chapter 7, “Router Feature Configuration.”
After configuring your router, you need to configure the PVC endpoint. For a 
general configuration example, see the “Cisco 3640 Gateway Configuration 
Example” section on page 74. 
Voice Network
Figure 4-16 and Ta b l e 4 - 2 0 show a...

 
Chapter 4      Network Scenarios
Voice Scenario
4-82
Cisco 800 Series Software Configuration Guide
78-5372-06
The Cisco 3640 router is set up on the LAN as a gatekeeper, which provides 
address translation and control access for the LAN for H.323 terminals and 
gateways. The gatekeeper may provide other services to the H.323 terminals and 
gateways, such as managing bandwidth and locating gateways.
In this scenario, the dial endpoint is the Cisco 3640 router, with an IP address of 
172.17.1.36 and a...