Netgear GSM4248P User Manual - Page 377
Address Resolution Protocol
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AV Line of Fully Managed Switches M4250 Series Main User Manual The main UI login page displays in a new tab. 4. Enter admin as the user name, enter your local device password, and click the Login button. The first time that you log in, no password is required. However, you then must specify a local device password to use each subsequent time that you log in. The System Information page displays. 5. Select Routing> VLAN > VLAN Routing. The VLAN Routing page displays. 6. Select the check box for the VLAN. 7. Click the Delete button. Your settings are saved. The routing function is removed from the VLAN but the VLAN itself is not deleted. 8. To save the settings to the running configuration, click the Save icon. Address Resolution Protocol The Address Resolution Protocol (ARP) associates a Layer 2 MAC address with a Layer 3 IPv4 address. The switch support both a dynamic and manual ARP configuration. With manual ARP configuration, you can statically add entries into the ARP table. ARP is a required part of the Internet Protocol (IP) and is used to translate an IP address to a media (MAC) address, defined by a LAN such as an Ethernet LAN. A device that sends IP packets must learn the MAC address of the IP destination, or of the next hop router, if the destination is not on the same subnet. This is achieved by broadcasting an ARP request packet, to which the intended recipient responds by unicasting an ARP reply that contains its MAC address. Once learned, the MAC address is used in the destination address field of the Layer 2 header prepended to the IP packet. The ARP cache is a table maintained locally on each device on a network. ARP cache entries are learned by examining the source information in the ARP packet payload fields, regardless of whether it is an ARP request or response. Thus, when an ARP request is broadcast to all devices on a LAN or VLAN, each recipient can store the sender's IP and MAC address in its respective ARP cache. The ARP response (which is unicast message), is normally detected only by the requestor, who stores the sender information in its ARP cache. The most recent information always replaces existing content in the ARP cache. The number of supported ARP entries depends on a device. Manage Routing 377 Main User Manual
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