Allied Telesis 2.6.1 Setting Routes, To change the IP address for an interface, enter the command

16 AT-8800 Series Switch User Guide

If IP addresses on your LAN are assigned dynamically by DHCP, you can set the switch to request an IP address from the DHCP server, using the commands:

ADD IP INTERFACE=vlan1 IPADDRESS=DHCP

ENABLE IP REMOTEASSIGN

You do not need to set the MASK parameter because the subnet mask received from the DHCP server is used.

If you use DHCP to assign IP addresses to devices on your LAN, and you want to manage the switch within this DHCP regime, it is recommended that you set your DHCP server to always assign the same IP address to the switch. This will enable you to access the GUI by browsing to that IP address, and will also let you use the switch as a gateway device for your LAN. If you need the switch's MAC address for this, it can be displayed using the command SHOW SWITCH.

To change the IP address for an interface, enter the command:

SET IP INTERFACE=interface IPADDRESS=ipadd MASK=ipadd

When you are configuring the switch remotely, if you change the configuration (for example, the VLAN membership) of the port over which you are configuring, the switch is likely to break the connection.

For more information about switch ports and Virtual LANs (VLANs), see Chapter 5, Layer 2 Switching in this document, and the Switching chapter in the AT-8800 Series Switch Software Reference. For more information about IP addressing and routing, see Chapter 6, Layer 3 in this document, and the Internet Protocol (IP) chapter in the AT-8800 Series Switch Software Reference.

Setting Routes

The process of routing packets consists of selectively forwarding data packets from one network to another. Your switch makes a decision to send a packet to a particular network on information it learns dynamically from listening to the selected route protocol and on the static information entered as part of the configuration process. In addition, you can configure user-defined filters to restrict the way packets are sent.

Your switch maintains a table of routes which holds information about routes to destinations. The route table tells the switch how to find a remote network or host. A route is uniquely identified by IP address, network mask, next hop, ifIndex, protocol and policy. A list of routes comprises all the different routes to a destination. The routes may have different metrics, next hops, policy or protocol. A list of routes is uniquely identified by its IP address and net mask.

The routing table is maintained dynamically by using one or more routing protocols such as RIP, EGP and OSPF. These act to exchange routing information with other switches or hosts.

You can also add static routes to the route table to define default routes to external switches or networks and to define subnets.

Software Release 2.6.1 C613-02039-00 REV A