[Typical configuration] AR18 Broadband Router VRRP Application

Networking and configuration steps
1.1typical vrrp applications
2.8.1 application description
To improve the availability and reliability of your network, you can deploy two SOHO routers for you and use VRRP features of the VRP platform to ensure the robustness of the network. Based on the customer's actual situation, there can be different SOHO router combinations to achieve networking. The VRRP deployment can be used to route user data from another ISP when the ISP line fails; even if a SOHO router fails due to force majeure, the entire network can communicate with the external network continuously.

Network Planning: the lan pc obtains the IP address through DHCP. The VRRP and DHCP Server are configured for the AR 18-32 and 3Com 3031, the IP address range is 10.11.x.x/16, and the gateway is VRRP vro10.10.11.0.3. AR 18-32 ethernet address 10.11.0.1, 3Com 3031 ethernet address 10.11.0.2.

VRRP: priority is set to 3Com 3031. Priority is set to 120. Priority is set to 100 for AR 18-32. When the ADSL line fails, priority is reduced by 50, in this way, when the ADSL line of 3Com 3031 is faulty, the priority is 120-70 = 50, which is 100 lower than the priority of AR 18-32. AR 18-32 can be used as the Master node to Route packets.

2.8.2 networking Diagram

1.1.3 considerations
Configure a router to access the INTERNET
Configure VRRP ...... AR 18-32

# Configuring Ethernet interfaces [1832]interface Ethernet 1/0 [1832-Ethernet1/0]ip address 10.11.0.1 16 # Configure VRRP Service [1832-Ethernet1/0]vrrp vrid 10 virtual-ip 10.11.0.3 [1832-Ethernet1/0]vrrp vrid 10 priority 100 # VRRP monitoring of ADSL lines [1832-Ethernet1/0]vrrp vrid 10 track atm 2/0 reduced 50 # Configuring the DHCP service [1832]dhcp server ip-pool vrrp [1832-dhcp-pool-vrrp]network 10.11.0.0 mask 255.255.0.0 [1832-dhcp-pool-vrrp]gateway-list 10.11.0.3 [1832-dhcp-pool-vrrp]dns-list 10.72.66.36 10.72.66.37 [1832-dhcp-pool-vrrp]domain-name huawei-3com.com [1832-dhcp-pool-vrrp]nbns-list 10.153.0.11 # Configuring NAT service [1832]acl number 3000 [1832-acl-adv-3000]rule 0 permit ip source 10.11.0.0 0.0.255.255 [1832]interface Dialer 0 [1832-Dialer0]nat outbound 3000 Configure VRRP ...... 3Com 3031 # Configuring Ethernet interfaces [3031]interface Ethernet 1/0 [3031-Ethernet1/0]ip address 10.11.0.2 16 # Configure VRRP Service [3031-Ethernet1/0]vrrp vrid 10 virtual-ip 10.11.0.3 [3031-Ethernet1/0]vrrp vrid 10 priority 120 # VRRP monitoring of ADSL lines [3031-Ethernet1/0]vrrp vrid 10 track atm 2/0 reduced 50 # Configuring the DHCP service [3031]dhcp server ip-pool vrrp [3031-dhcp-pool-vrrp]network 10.11.0.0 mask 255.255.0.0 [3031-dhcp-pool-vrrp]gateway-list 10.11.0.3 [3031-dhcp-pool-vrrp]dns-list 10.72.66.36 10.72.66.37 [3031-dhcp-pool-vrrp]domain-name huawei-3com.com [3031-dhcp-pool-vrrp]nbns-list 10.153.0.11 # Configuring NAT service [3031]acl number 3000 [3031-acl-adv-3000]rule 0 permit ip source 10.11.0.0 0.0.255.255 [3031]interface Dialer 0 [3031-Dialer0]nat outbound 3000 Verify that the VRRP status is normal after Configuration <3031>dis vrrp  Virtual Ip Ping : Disable 　 Ethernet1/0 | Virtual Router 10 　state : Master  Virtual IP : 10.11.0.3 Config Priority : 120 　 Run Priority : 120 Preempt : YES　 Delay Time : 0 　Timer : 1 　Auth Type : NONE Track IF : Atm2/0　 Priority reduced : 50   <1832>dis vrrp  Virtual Ip Ping : Disable 　 Ethernet1/0 | Virtual Router 10 　state : Backup  Virtual IP : 10.11.0.3 Config Priority : 100 　 Run Priority : 100 Preempt : YES　 Delay Time : 0 　Timer : 1 　Auth Type : NONE Track IF : Atm2/0　 Priority reduced : 50 VRRP status after ADSL line failure <3031>dis vrrp  Virtual Ip Ping : Disable 　 Ethernet1/0 | Virtual Router 10 　state : Backup  Virtual IP : 10.11.0.3 Config Priority : 120 　 Run Priority : 70 Preempt : YES　 Delay Time : 0 　Timer : 1 　Auth Type : NONE Track IF : Atm2/0　 Priority reduced : 50 <1832>dis vrrp  Virtual Ip Ping : Disable 　 Ethernet1/0 | Virtual Router 10 　state : Master  Virtual IP : 10.11.0.3 Config Priority : 100 　 Run Priority : 100 Preempt : YES　 Delay Time : 0 　Timer : 1 　Auth Type : NONE Track IF : Atm2/0　 Priority reduced : 50

Configuration instructions
Currently, VRRP does not support dialer virtual interfaces. Therefore, we recommend that you configure atm oam F5 LOOP signaling detection. For more information, see the ADSL configuration document.
Interface Atm2/0.1 p2p
Atm-link check
Pvc 1/35
Oam frequency 10
Map bridge Virtual-Ethernet0

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