Avaya P460 사용자 설명서
Chapter 5
Avaya P460 Layer 3 Features
Avaya P460 Configuration Guide
41
Routing Configuration
Forwarding
The P460 forwards IP packets between IP networks. When it receives an IP packet
through one of its interfaces, it forwards the packet through one of its interfaces. The
P460 supports multinetting. This allows it to forward packets between IP
subnetworks on the same VLAN and between different VLANs. Forwarding is
performed through standard means in Router mode.
through one of its interfaces, it forwards the packet through one of its interfaces. The
P460 supports multinetting. This allows it to forward packets between IP
subnetworks on the same VLAN and between different VLANs. Forwarding is
performed through standard means in Router mode.
Multinetting (Multiple Subnetworks per VLAN)
In Router Mode, most applications such as RIP and OSPF, operate per IP interface.
Other applications such as VRRP and DHCP/BOOTP Relay operate per VLAN.
Configuration of these applications is done in the Interface mode. When there is
only a single interface (subnetwork) per VLAN then system behavior is intuitive
since a subnet and a VLAN are the same.
If the configuration includes multiple interfaces (subnetworks) per VLAN things
start to get complicated.
For example, if there are two interfaces over the same VLAN and you configure
DHCP server on one interface, the DHCP server will be used also for the second
interface over the same VLAN. This behavior might be less expected and in some
cases wrong.
The P460 prevents configuration of VLAN-oriented commands on an interface
unless the user explicitly enables it, using the enable vlan commands CLI
command. This stops misconfiguration and unexpected results.
If there is only one interface over a VLAN, you can configure this VLAN through
the single interface without the need to issue the enable vlan commands
command.
Other applications such as VRRP and DHCP/BOOTP Relay operate per VLAN.
Configuration of these applications is done in the Interface mode. When there is
only a single interface (subnetwork) per VLAN then system behavior is intuitive
since a subnet and a VLAN are the same.
If the configuration includes multiple interfaces (subnetworks) per VLAN things
start to get complicated.
For example, if there are two interfaces over the same VLAN and you configure
DHCP server on one interface, the DHCP server will be used also for the second
interface over the same VLAN. This behavior might be less expected and in some
cases wrong.
The P460 prevents configuration of VLAN-oriented commands on an interface
unless the user explicitly enables it, using the enable vlan commands CLI
command. This stops misconfiguration and unexpected results.
If there is only one interface over a VLAN, you can configure this VLAN through
the single interface without the need to issue the enable vlan commands
command.
Note:
1. When you issue VLAN-oriented commands, the commands affect the VLAN of
the interface that was used at the time the you issued the command.
2. If the you move the interface is moved to another VLAN with the ip vlan/ip
vlan name
1. When you issue VLAN-oriented commands, the commands affect the VLAN of
the interface that was used at the time the you issued the command.
2. If the you move the interface is moved to another VLAN with the ip vlan/ip
vlan name
CLI command, VLAN oriented configuration still applies to the
original VLAN.