Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

Contents

Small Office Remote Access Switch 223CONFIGURING A DVANCED IP ROUTINGIP FiltersWhen a PPP connection is established to the system, the system and the remote device exchangetheir IP addresses during the IPCP (IP Control Protocol) phase. If the remote device does not knowits own IP address, the system will assign a proper IP address to it. A proper IP address can be apermanent IP address configured for the remote device in the device table, or it can be one of theIP addresses configured in the IP Address Pool. If an IP address from the address pool is used, itwill be returned to the pool when the connection is terminated. This allows the IP address to bereused for other remote IP devices. As many as 64 IP addresses can be configured in the IP AddressPool.Notes: Dynamic IP address assignment from the IP Address Pool is only supported via PPP IPCP.An IP address should not be configured for the device (either in the on-node devicedatabase or in a remote authentication database) if an IP address is to be assigned to thedevice from the IP address pool.IP F ILTERSThe IP Filter Configuration is a three-part process. It involves:1. configuring packet types2. configuring the filters to act on these packet types3. applying the filters to selected points in the IP packet processingWe suggest you become familiar with the IP Filtering mechanism before attempting aconfiguration. Refer to IP Filters Background Information.Understandably, when IP Filters are enabled, system performance will slow down. This is due tothe fact that every IP packet will experience a delay while the system is searching for a filter match.System performance will also be affected by the number of packets, conditions and filtersconfigured. Refer to the Limitations section for details.I NITIATING THE IP F ILTER CONFIGURATIONU SING CFGEDITTo begin the configuration process, IP must be enabled. Access IP Filter configuration through theextended IP Routing Menu: