3Com CoreBuilder 3500, Implementation Manual, Page: 428 / 592

428 C
HAPTER
15: IPX R
OUTING
IPX Interfaces
An IPX interface has the following information associated with it:
■
IPX network address — You must set this 4-byte address. Make
each address unique within the network.
■
Cost — A number between 1 and 65534 that the system uses to
calculate route tiks. A tic is an estimate of how long it takes a packet
to reach a network segment. One tic is approximately 55. Assign a
cost of
1
to each IPX interface unless your network has special
requirements like the need for redundant paths.
■
Encapsulation format — IPX routing uses all four encapsulation
formats: Ethernet Type II, Novell 802.3 Raw, 802.2 LLC, and 802.3
SNAP
■
State — The status of the IPX interface. The IPX interface status can
be up (available for communication) or down (unavailable for
communication).
■
VLAN interface index (VLAN index) — Identifies the VLAN that is
associated with a IPX interface. When the system prompts you for this
option, it indicates the available VLAN indexes.
Important
Considerations
Consider the following guidelines when you set up an IPX interface:
■
The first line in an interface display indicates whether:
■
IPX forwarding is enabled.
■
IPX RIP mode is active.
■
IPX RIP mode triggered updates are enabled.
■
IPX SAP mode is active.
■
IPX SAP triggered updates are enabled.
■
The secondary route/server option is enabled on the system.
■
An IPX interface defines the relationships among an IPX VLAN, the IPX
router, and the IPX network. The IPX router has one IPX interface
defined for each network to which it is directly connected.
■
When you define an IPX interface, you define the interface’s:
■
IPX address.
■
Cost.
■
Format.
■
Associated IPX VLAN index.