R3204P16-HP Load Balancing Module Network Management Configuration Guide-6PW101
Table Of Contents
- Title page
- Contents
- Interface management configuration
- IP addressing configuration
- MAC address table configuration
- Layer 2 forwarding configuration
- Layer 2 forwarding overview
- Configuring general Layer 2 forwarding
- Configuring inline Layer 2 forwarding
- Configuring inter-VLAN Layer 2 forwarding
- Forward-type inline Layer 2 forwarding configuration example
- Blackhole-type inline Layer 2 forwarding configuration example
- Inter-VLAN Layer 2 forwarding configuration example
- VLAN configuration
- ARP configuration
- Gratuitous ARP configuration
- Proxy ARP configuration
- Layer 3 forwarding configuration
- NAT configuration
- Overview
- Configuring a NAT policy in the web interface
- Configuring NAT in the CLIs
- Configuration guidelines
- ALG configuration
- Static route configuration
- RIP configuration
- OSPF configuration
- BGP configuration
- Policy-based routing configuration
- Route displaying
- DNS configuration
- Overview
- Configuring DNS on the web interface
- Configuring DNS in the CLIs
- Troubleshooting IPv4 DNS configuration
- Support and other resources
- Index
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A main advantage of proxy ARP is that it is added on a single router without disturbing routing tables of
other routers in the network. Proxy ARP acts as the gateway for IP hosts that are not configured with a
default gateway or do not have routing capability.
Local proxy ARP
As shown in Figure 33, Host A and Host B belong to VLAN 2, but are isolated at Layer 2. Host A connects
to Ethernet 1/3 while Host B connects to Ethernet 1/1. Enable local proxy ARP on LB module to allow
Layer 3 communication between the two hosts.
Figure 33 Application environment of local proxy ARP
In one of the following cases, you need to enable local proxy ARP:
• Hosts connecting to different isolated Layer 2 ports in the same VLAN need to communicate at
Layer 3.
• If an isolate-user-VLAN is configured, hosts in different secondary VLANs of the isolate-user-VLAN
need to communicate at Layer 3.
Enabling proxy ARP
Follow these steps to enable proxy ARP in VLAN interface view/Ethernet interface view:
To do… Use the command…
Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—
Enable proxy ARP proxy-arp enable
Required
Disabled by default.
Follow these steps to enable local proxy ARP in VLAN interface view/Ethernet interface view:
To do… Use the command…
Remarks
Enter system view system-view —
Enter interface view
interface interface-type
interface-number
—