Cabletron Systems CSX100 series, User Manual, Page: 48 / 153

ISDN Router 34
Service Profile Identifications (SPIDs)
SPIDs identify the services and features that the switch provides to the
ISDN device. Commonly implemented in the U.S. and Canada, the
SPID is often derived from the directory number, concatenated with other
digits.
Note: SPIDs are not implemented outside North America.
Refer to Chapter 1, ISDN and Ordering Issues , for further information.
TCP/IP Routing Entries
You will need to obtain the following network addresses:
For the Ethernet Interface
Ethernet IP Address (Local LAN)
An Ethernet LAN IP address and subnet mask are required for the
router’s local Ethernet LAN connection.
TCP/IP Ethernet Routes
You normally do not need to define an Ethernet IP route. An Ethernet IP
route consists of an IP address, a mask, a metric, and a gateway. An
Ethernet route is usually defined when there are multiple routers on the
Ethernet, which cannot exchange routing information between them.
Ethernet Default Gateway
One default route should be designated in the routing table for all traffic
that cannot be directed to other specific routes.
You will need to define the default route to a remote router or define an
Ethernet gateway. There can be only one default route specified for all
the remote database entries.
For the ISDN WAN Interface
Source (Target/Local) WAN Port Address
You may need to specify a source WAN IP address for the WAN
connection to the remote router depending on IP address negotiation
under PPP.
Check with your system administrator for details on whether the router
must communicate in numbered or unnumbered mode and what
addresses are required. The router is set to unnumbered mode by default.
This enables numbered mode on the WAN interface.