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Echo LANlink Router Option User Manual Issue 1.0 04 December 1997 Page 41 of 59
MENU SELECTION DESCRIPTION
NETWORK Source or destination IPX number
(eight digit hexadecimal.)
MAC NODE ADR Ethernet MAC address of the network
adapter card (twelve digit
hexadecimal. File servers are
usually designated 000000000001.
SOCKET Designates a conversation between
two addresses.
P.T An 8-bit field that specifies the upper-
layer protocol to receive the packet's
information e.g. NCP or SPX.
RSLT The action to be taken as a result of
IPX packets meeting filter conditions
e.g. FAIL (drop) or PASS (route.)
4.7.5 NOVELL KEEP-ALIVES
Novell File Servers poll all workstations that are attached to the server if they
have not seen any traffic from that station for a certain period. This is to
detect situations where the workstation has been turned off without being
logged out. If these Poll Inactive Station packets or the reply are filtered out,
then any workstation that is unused for approximately 15 minutes will lose the
network connection.
The request from the server is from source socket 4001 to destination socket
4004 with a Packet Type of zero. The reply from the workstation is from
source socket 4004 to destination socket 4001.
If you do not make provision for these packets in the IPX header filter table
then any workstations unused for approximately 15 minutes will lose their
network connection.
4.8 EVENTS