Technical data

80 CHAPTER 4: NETWORK PROTOCOL OPERATION
on the VLAN interfaces on the switch. This allows the switch to broadcast update
only when route or service information changes, thus avoiding broadcast flooding.
Perform the following configuration in VLAN interface view.
By default, the triggered update feature of IPX is disabled.
Configuring Split Horizon of IPX Split horizon eliminates routing loops by
forbidding the switch to send the routing information out the interface where it is
received. In some cases, however, split horizon must be disabled to ensure the
correct transmission of routing information.
Perform the following configuration in VLAN interface view.
By default, split horizon is enabled.
Disable split horizon only when necessary and with caution, because it can result
in routing loops.
Configuring the Encapsulation Format of the IPX frame You can modify
the encapsulation format of the IPX frame.
Perform the following configuration in VLAN interface view.
By default, the encapsulation format of the IPX frame is 802.3 (dot3).
Configuring for Forwarding Type 20 IPX Broadcast Packets Novell NetWare
defines the type 20 IPX broadcast packet for the Network Basic Input/Output
System (NetBIOS). You can enable or disable the forwarding of type 20 broadcast
packets to other segments.
Tab le 36 Configuring Triggered Update of IPX
Operation Command
Enable triggered update of IPX ipx update-change-only
Disable triggered update of IPX undo ipx update-change-only
Tab le 37 Configuring Split Horizon of IPX
Operation Command
Enable split horizon of IPX ipx split-horizon
Disable split horizon of IPX undo ipx split-horizon
Tab le 38 Configuring the Encapsulation Format of the IPX Frame
Operation Command
Set the encapsulation format of the IPX frame
to one of the four encapsulation formats
ipx encapsulation [ dot2 | dot3 |
ethernet-2 | snap ]
Restore the IPX frame encapsulation format to
the default or Ethernet_802.3
undo ipx encapsulation