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 3      Basic Router Configuration
Configuring Quality of Service Parameters
Configuring IP Precedence
IP Precedence gives voice packets a higher priority than other IP data traffic. The ip precedence 
command should also be used if RSVP is not enabled and you would like to give voice packets a priority 
over other IP data traffic. IP Precedence scales better...

  
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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 3      Basic Router Configuration
Configuring Dial Backup
This command starts RSVP and sets the bandwidth and single-flow limits. The default maximum 
bandwidth is up to 75 percent of the bandwidth available on the interface. By default, a flow can reserve 
up to the entire reservable bandwidth.
On subinterfaces, RSVP applies to the more restrictive of 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 3      Basic Router Configuration
Configuring Dial Backup
Specifying the Backup Interface
To specify a backup interface for a primary WAN interface or subinterface, enter the backup interface 
type number command to select a backup interface.
NoteWhen you use a BRI for a dial backup, neither of the B channels can be used while the interface is in 
standby mode....

  
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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 3      Basic Router Configuration
Configuring Dial Backup
interface async 1
ip address 172.30.3.5 255.255.255.0
dialer in-band
dialer string 5551212
dialer-group 1
async dynamic routing
dialer list 1 protocol ip permit
chat-script sillyman “““atdt 5551212” TIMEOUT 60 “CONNECT”
line aux 0
modem chat-script sillyman
modem inout
speed 9600
Configuration Example...

  
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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 3      Basic Router Configuration
Configuring Dial Backup
ip route 0.0.0.0 0.0.0.0 !(dial backup peer address @ISP)
ip route 0.0.0.0 0.0.0.0 Dialer1 150
!
no ip http server
ip pim bidir-enable
!
!
access-list 101 permit ip 192.168.0.0 0.0.255.255 any
dialer watch-list 1 ip !(ATM peer address @ISP) 255.255.255.255
dialer-list 1 protocol ip permit
!
! To direct...

  
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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 3      Basic Router Configuration
Configuring Dial Backup
!
line con 0
exec-timeout 0 0
modem enable
stopbits 1
line aux 0
exec-timeout 0 0
modem Dialin
modem autoconfigure type MY_USER_MODEM
transport input all
stopbits 1
speed 38400
flowcontrol hardware
to align with line aux 0
exec-timeout 0 0
login local
!
Configuration Example
The following example shows...

  
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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 3      Basic Router Configuration
Configuring IGMP Proxy and Sparse Mode
dialer string 384040
dialer watch-group 1
dialer-group 1
!
! Primary interface associated with physical ATM0 interface, dialer pool 2 associates it 
with ATM0’s dial-pool-number2
interface Dialer2
ip address negotiated
ip mtu 1492
encapsulation ppp
dialer pool 2
dialer-group 2
no cdp...

  
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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 3      Basic Router Configuration
Configuring IGMP Proxy and Sparse Mode
Configuration Example
The following example shows the relevant IGMP proxy and sparse mode commands. The Ethernet 0, 
Ethernet 1, and loopback 0 interfaces have been configured for PIM sparse mode; the PIM RP address 
has been defined as 10.5.1.1.
ip pim rp-address 10.5.1.1 5 
access-list 5...

  
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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 3      Basic Router Configuration
Configuring IP Security and GRE Tunneling
Verifying Your Configuration
You can verify your configuration by using the show ip igmp interface ethernet 0 multicasting 
command. You should see a verification output similar to the following:
router#show ip igmp interface ethernet 0
Ethernet0 is up, line protocol is up
Internet...

  
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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 3      Basic Router Configuration
Configuring IP Security and GRE Tunneling
Configuring Internet Protocol Parameters
Follow the steps below to configure IP parameters, starting in global configuration mode.
Configuring an Access List
Use the access-list command to create an access list that permits the GRE protocol and that specifies the 
starting and ending IP...