Ipx Rip/Sap Filter Precedence; Flushing The Ipx Rip/Sap Tables - Alcatel-Lucent OmniSwitch 6800 Series Network Configuration Manual

IPX RIP/SAP Filtering

IPX RIP/SAP Filter Precedence

Whenever you use multiple "allow" filters you must first define a filter to block all RIPs or SAPs. Then,
all of the subsequent "allow" filters of the same type must be at least as specific in all areas for the filters
to work. Note that filtering precedence is related only to "allow" filters. Multiple "block" filters can be
defined with varying specificity in each of the areas of the filter.
For example, consider a switch that knows of multiple Type 0004 SAPs on various networks, including a
network with an address of "40." The switch also knows of various types of SAPs on Network 40. For this
example, you want to block all SAP updates coming from Network 40, but you want to allow all Type
0004 SAPs, including the ones that come from Network 40. To meet these objectives, you would config-
ure the following filters:
Filter 1
ipx filter sap all in block 40 mask ffffffff
This filter will block all SAP Type updates on all nodes of network 40.
Filter 2
ipx filter sap 0004 in allow 40 mask ffffffff
This filter will allow only SAP Type 0004 updates on all nodes of network 40. It is more specific than the
block filter so only SAP Type 0004 updates will be allowed.
The filters shown below will not work for our example because in Filter 2 the type of service is less
specific than the type defined in Filter 1. All Type 0004 SAPs will be blocked by the filter.
Filter 1
ipx filter sap 0004 in block 40 mask ffffffff
This filter will block only SAP Type 0004 updates on all nodes of network 40.
Filter 2
ipx filter sap all in allow 40 mask ffffffff
This filter will allow all SAP Types on all nodes of network 40. It is less specific than the block filter so all
SAP updates will be allowed.

Flushing the IPX RIP/SAP Tables

When you flush the RIP/SAP table(s), only routes learned by RIP and SAP are deleted; static routes are
not removed. The RIP Table and SAP Bindery Tables can contain a maximum of 2,000 entries each.
Use the clear ipx route
followed by the table that you want to clear (rip, sap, or all). For example to clear all dynamic entries from
both the RIP and SAP tables you would enter:
-> clear ipx route all
Use the show ipx route command to display the IPX RIP Routing Table.
page 24-14
command to flush the IPX RIP and/or SAP Bindery Tables. Enter the command,
OmniSwitch 6800/6850/9000 Network Configuration Guide
Configuring IPX
March 2008