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30-14 Riverstone Networks RS Switch Router User Guide Release 8.0
PPP Port Configuration WAN Configuration
30.10 PPP PORT CONFIGURATION
To configure PPP WAN ports, you must first define the type and location of the WAN interface, optionally “set up” a
library of configuration settings, then apply those settings to the desired interface(s). The following examples are
designed to give you a small model of the steps necessary for a typical PPP WAN interface specification.
To define the location and identity of a High-Speed Serial Interface (HSSI) PPP WAN port located at router slot 5,
port 1 with a speed rating of 45 million bits per second:
When configuring a PPP connection between two multi-vendor equipment, make sure that the maximum transfer unit
(MTU) and the maximum receive unit (MRU) are compatible for each machine. For instance, if Router1 has an
MTU=4k/MRU=4k and Router2 has an MTU=9k/MRU=9k, there will be incompatibility issues and the PPP
connection may fail. This is because Router1 cannot accommodate the bigger amount of traffic from Router2.
To set the MRU=10k and MTU=10k on the HSSI port hs.5.1:
Suppose you wish to set up a service profile called “profile2” that includes the following characteristics:
•
Bridging enabled
•
Leave high-, low-, and medium-priority queue depths set to factory defaults
•
IP and IPX enabled
•
Sending of LCP Echo Requests disabled
•
Use of LCP magic numbers disabled
•
The maximum allowable number of unanswered requests set to 8
•
The maximum allowable number of negative-acknowledgment transmissions set to 5
•
The maximum allowable number of unanswered/improperly answered connection-termination
requests before declaring the link to a peer lost set to 4
•
Random Early Discard disabled
•
The number of seconds between subsequent configuration request transmissions (the “retry
interval”) set to 25
•
RMON enabled
The command line necessary to set up a service profile with the above attributes would be as follows:
To assign the above service profile to the active PPP WAN port defined earlier (slot 5, port 1):
rs(config)# port set hs.5.1 wan-encapsulation ppp speed 45000000
rs(config)# port set hs.5.1 mtu 10000 mru 10000
rs(config)# ppp define service profile2 bridging enable ip enable ipx
enable lcp-echo off lcp-magic off max-configure 8 max-failure 5
max-terminate 4 red off retry-interval 25 rmon on
rs(config)# ppp apply service profile2 ports hs.5.1