Allied Telesis AT-8100 Series - Manual (Page 1815)

AT-8100 Switch Command Line User’s Guide
1815
Routing Interfaces
Routing interfaces are used to route IPv4 packets between the networks
that are local to the switch. Local networks are directly connected to the
switch. Routing interfaces are applied to VLANs, and there can only be
one routing interface per VLAN. Thus, each VLAN on the switch should
have only one IPv4 network. Once you have applied routing interfaces to
two or more VLANs, the switch automatically begins to route IPv4 packets
across the VLAN boundaries.
Routing interfaces are an independent routing function and are not
dependent on static routes or RIP to pass IPv4 traffic on the switch. The
switch automatically begins to route IPv4 packets among its local networks
in the different VLANs, as soon as you have defined two or more routing
interfaces.
Routing interfaces have two components:
 VLAN ID (VID)
 IP address and subnet mask
VLAN ID (VID) Routing interfaces are assigned to VLANs. The VLANs are identified by
their VLAN identification (VID) numbers or names. You have to create the
VLANs first before the routing interfaces.
IP Address and
Subnet Mask
A routing interface must be assigned an IP address and subnet mask. The
IP address must be a unique member of the local network in which the
routing interface is to route IPv4 packets. The IP address and subnet mask
of a routing interface can be assigned manually or supplied by a DHCP or
BOOTP server on the network.