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Cisco WAN Manager User’s Guide
Version 10.5, Part Number 78-12945-01 Rev. D0, August 2003
Appendix A Internet Connectivity
Functional Description
The typical and most likely configuration will include the following:
• MGX 8850 Release 2 with external Cisco 7000 family or Cisco 4500 series router connected to
AXSM port, or MGX 8850 Release 2 with internal RPM card to support Cisco 7200 router.
• Cisco router supports ATM interface with LLC encapsulation and ATMARP protocol service, RIP
protocol and ILMI protocol.
• Host/workstation is a Sun workstation running Release 10 of CWM software with support for RIP
and SNMP protocols.
Figure A-2 shows the logical connectivity between MGX 8850 Release 2 nodes and CWM workstations.
Figure A-2 MGX 8850 Release 2 IP Connectivity
Functional Description
IP connectivity relies on three disjoint IP hosts to build the IP data path. The first are the PXMs, where
servers for the CWM, FTP, Telnet, etc. reside. The PXMs are the end-point for the MGX 8850 Release
2 being managed.
The second are router or routers. This routers interface with the PXMs using SVCs to transfer IP data.
The routers will also interface with the CWM workstations that are managing the MGX 8850 Release 2
through some other network interface (usually ethernet).
The third are the CWM workstations managing the MGX 8850 Release 2. The CWM workstations
initiate data being sent on the data-path to the MGX 8850 Release 2. The CWM workstation knows or
learns that the routers are the go-between for all data to and from the MGX 8850 Release 2.
The CWM workstations will have clients such as CWM, FTP, Telnet, and TimeOfDay (among others)
that will make IP connections with the appropriate servers on the MGX 8850 Release 2.
PXM
The PXM software provides for setting up the IP Connectivity data-path. This connectivity comes in
several pieces. The first piece is the implementation of a custom interface for the VxWorks TCP/IP
protocol stack. This custom interface will hook-up to the IP layer of the protocol stack and will have the
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