Cabletron Systems 1800 - Manual (Page 266)

16-14 SmartSwitch 1800 4. 0 User G uide, Rev 01
2 Valid port numbers depend on the model of SmartSwitch 1800—see port locations on
page 6-1 . Make sure the port is not configured (in the Port record) for backup use only .
3 Make sure the DLCI is not part of a frame relay DLCI backup group. Also make sure the
DLCI is not the one configured on the port as a frame relay PVC.
4 If Nati ve LLC2 , the interface can be used only for terminated LLC2 traffic.
5 Configured in LLC2 Host file .
6 Must be unique among all LAN IDs throughout the network on which this node will
operate.
Interface Type
identifies whether the interface is on a LAN or a frame relay network.
Blocked Port Flag
causes the port to be enabled ( N ) or disabled ( Y ) at node IPL. The interface will remain
in that state until this parameter is changed and an on-line update of the bridge port is
performed.
Port Priority
will become the first octet of the Port ID field in Spanning Tree Protocol messages. The
lower the number, the higher the priority that the interface will be given among other
interfaces in the spanning tree.
Path Cost
is the "cost" of transmitting a frame through the port onto the LAN. This cost, deter-
mined by the speed of the LAN/port (the higher the speed, the lower the cost), will be
added together with all other path costs on a specific link between source and desti-
nation devices. The total will then be compared to other total path costs to determine
the least "expensive" end-to-end path.
Priority
prioritizes this interface for intra-nodal traffic; the higher the number, the higher the
priority. (This priority has no effect on traffic exiting a node.)
Priorities are configured on all logical interfaces that use a physical frame relay port.
The device processor in the node uses these priorities to help determine the order in
which it will process protocols.
This priority has no connection to Bridge Priority or Port Priority .
When configuring priorities, be careful to consider the types of
traffic being routed on other connections in the node.
Port
identifies the physical port containing the interface.
Make sure the physical frame relay port is not reserved for
backup DLCIs (as determined by the
For Backup Use Only?
parameter in the port record).
DLCI
matches the connection with an interface at the remote end of the link.