Netgear XCM8806 - 8800 SERIES 6-SLOT CHASSIS SWITCH ユーザーズマニュアル
Chapter 20. IPv4 Unicast Routing
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NETGEAR 8800 User Manual
Overview
The switch provides full Layer 3, IPv4 unicast routing to all switches that run the Advanced
and Core licenses (see
and Core licenses (see
). It exchanges routing
information with other routers on the network using one of the following routing protocols:
•
Routing Information Protocol (RIP)
•
Open Shortest Path First (OSPF)
The switch dynamically builds and maintains a set of routing tables and determines the best
path for each of its routes. Each host using the IP unicast routing functionality of the switch
must have a unique IP address assigned. In addition, the default gateway assigned to the
host must be the IP address of the router interface.
path for each of its routes. Each host using the IP unicast routing functionality of the switch
must have a unique IP address assigned. In addition, the default gateway assigned to the
host must be the IP address of the router interface.
The XCM8800 software can provide both IPv4 and IPv6 routing at the same time. Separate
routing tables are maintained for the two versions. Most commands that require you to
specify an IP address can now accept either an IPv4 or IPv6 address and act accordingly.
Additionally, many of the IP configuration, enabling, and display commands have added
tokens for IPv4 and IPv6 to clarify the version required. For simplicity, existing commands
affect IPv4 by default and require you to specify IPv6, so configurations from an earlier
release still correctly configure an IPv4 network.
routing tables are maintained for the two versions. Most commands that require you to
specify an IP address can now accept either an IPv4 or IPv6 address and act accordingly.
Additionally, many of the IP configuration, enabling, and display commands have added
tokens for IPv4 and IPv6 to clarify the version required. For simplicity, existing commands
affect IPv4 by default and require you to specify IPv6, so configurations from an earlier
release still correctly configure an IPv4 network.
The following sections provide additional information on IP unicast routing:
Router Interfaces
The routing software and hardware routes IP traffic between router interfaces. A router
interface is simply a virtual LAN (VLAN) that has an IP address assigned to it.
interface is simply a virtual LAN (VLAN) that has an IP address assigned to it.
As you create VLANs with IP addresses belonging to different IP subnets, you can also
choose to route between the VLANs. Both the VLAN switching and IP routing function occur
within the switch.
choose to route between the VLANs. Both the VLAN switching and IP routing function occur
within the switch.
Note:
Each IP address and mask assigned to a VLAN must represent a
unique IP subnet. You cannot configure the same IP address and
subnet on different VLANs.
subnet on different VLANs.
shows an example NETGEAR 8800 switch configuration with two VLANs defined;
Finance and Personnel. All ports on slots 1 and 3 are assigned to Finance, and all ports on
slots 2 and 4 are assigned to Personnel.
slots 2 and 4 are assigned to Personnel.
shows the subnet address and interface
address for each VLAN. Traffic within each VLAN is switched using the Ethernet MAC
addresses. Traffic between the two VLANs is routed using the IP addresses.
addresses. Traffic between the two VLANs is routed using the IP addresses.