Web Management Guide-R07
Table Of Contents
- How to Use This Guide
- Contents
- Figures
- Tables
- Getting Started
- Introduction
- Key Features
- Description of Software Features
- Configuration Backup and Restore
- Authentication
- Access Control Lists
- Port Configuration
- Rate Limiting
- Port Mirroring
- Port Trunking
- Storm Control
- Static MAC Addresses
- IP Address Filtering
- IEEE 802.1D Bridge
- Store-and-Forward Switching
- Spanning Tree Algorithm
- Virtual LANs
- IEEE 802.1Q Tunneling (QinQ)
- Traffic Prioritization
- Quality of Service
- IP Routing
- Address Resolution Protocol
- Multicast Filtering
- Link Layer Discovery Protocol
- System Defaults
- Introduction
- Web Configuration
- Using the Web Interface
- Basic Management Tasks
- Displaying System Information
- Displaying Hardware/Software Versions
- Configuring Support for Jumbo Frames
- Displaying Bridge Extension Capabilities
- Managing System Files
- Setting the System Clock
- Configuring the Console Port
- Configuring Telnet Settings
- Displaying CPU Utilization
- Configuring CPU Guard
- Displaying Memory Utilization
- Resetting the System
- Using Cloud Management
- Interface Configuration
- VLAN Configuration
- Address Table Settings
- Spanning Tree Algorithm
- Congestion Control
- Class of Service
- Quality of Service
- VoIP Traffic Configuration
- Security Measures
- AAA (Authentication, Authorization and Accounting)
- Configuring User Accounts
- Web Authentication
- Network Access (MAC Address Authentication)
- Configuring HTTPS
- Configuring the Secure Shell
- Access Control Lists
- Filtering IP Addresses for Management Access
- Configuring Port Security
- Configuring 802.1X Port Authentication
- DoS Protection
- DHCP Snooping
- IPv4 Source Guard
- ARP Inspection
- Basic Administration Protocols
- Configuring Event Logging
- Link Layer Discovery Protocol
- Power over Ethernet
- Simple Network Management Protocol
- Configuring Global Settings for SNMP
- Setting the Local Engine ID
- Specifying a Remote Engine ID
- Setting SNMPv3 Views
- Configuring SNMPv3 Groups
- Setting Community Access Strings
- Configuring Local SNMPv3 Users
- Configuring Remote SNMPv3 Users
- Specifying Trap Managers
- Creating SNMP Notification Logs
- Showing SNMP Statistics
- Remote Monitoring
- Switch Clustering
- Setting a Time Range
- LBD Configuration
- Smart Pair Configuration
- Multicast Filtering
- Overview
- Layer 2 IGMP (Snooping and Query for IPv4)
- Configuring IGMP Snooping and Query Parameters
- Specifying Static Interfaces for a Multicast Router
- Assigning Interfaces to Multicast Services
- Setting IGMP Snooping Status per Interface
- Filtering IGMP Query Packets and Multicast Data
- Displaying Multicast Groups Discovered by IGMP Snooping
- Displaying IGMP Snooping Statistics
- Filtering and Throttling IGMP Groups
- MLD Snooping (Snooping and Query for IPv6)
- Filtering and Throttling MLD Groups
- Filtering MLD Query Packets on an Interface
- IP Tools
- IP Configuration
- General IP Routing
- Unicast Routing
- Overview
- Configuring the Routing Information Protocol
- Configuring General Protocol Settings
- Clearing Entries from the Routing Table
- Specifying Network Interfaces
- Specifying Passive Interfaces
- Specifying Static Neighbors
- Configuring Route Redistribution
- Specifying an Administrative Distance
- Configuring Network Interfaces for RIP
- Displaying RIP Interface Settings
- Displaying Peer Router Information
- Resetting RIP Statistics
- IP Services
- Appendices
- Glossary
Chapter 15
| IP Tools
Address Resolution Protocol
– 473 –
reply, it writes the destination IP address and corresponding MAC address into its
cache, and forwards the IP traffic on to the next hop. As long as this entry has not
timed out, the router will be able forward traffic directly to the next hop for this
destination without having to broadcast another ARP request.
Also, if the switch receives a request for its own IP address, it will send back a
response, and also cache the MAC of the source device's IP address.
Basic ARP
Configuration
Use the Tools > ARP (Configure General) page to specify the timeout for ARP cache
entries, or to enable Proxy ARP for specific VLAN interfaces.
Command Usage
Proxy ARP
When a node in the attached subnetwork does not have routing or a default
gateway
configured, Proxy ARP can be used to forward ARP requests to a remote
subnetwork.
When the router receives an ARP request for a remote network and
Proxy ARP is enabled, it determines if it has the best route to the remote network,
and then answers the ARP request by sending its own MAC address to the
requesting node. That node then sends traffic to the router, which in turn uses its
own routing table to forward the traffic to the remote destination.
Figure 312: Proxy ARP
Parameters
These parameters are displayed:
◆ Proxy ARP – Enables or disables Proxy ARP for specified VLAN interfaces,
allowing a non-routing device to determine the MAC address of a host on
another subnet or network. (Default: Disabled)
End stations that require Proxy ARP must view the entire network as a single
network. These nodes must therefore use a smaller subnet mask than that used
by the router or other relevant network devices.
Extensive use of Proxy ARP can degrade router performance because it may
lead to increased ARP traffic and increased search time for larger ARP address
tables.
no routing,
no default
gateway
Remote
ARP Server
Proxy ARP
ARP
request