|
If an IPX EIGRP router has another IPX EIGRP
router as its link partner, you can configure either the router to send
SAP updates periodically or when a change occurs in the SAP table.
When no IPX EIGRP peer is present on the interface, periodic SAPs are
always sent.
On serial lines, by default, if an EIGRP
neighbor is present, the router sends SAP updates only when the SAP
table changes. Overhead is greatly reduced if a router updates other
routers only when a change occurs.
On Ethernet, Token Ring, and FDDI
interfaces, by default, the router sends SAP updates periodically. To
reduce the amount of bandwidth required to send SAP updates, you might
want to disable the periodic sending of SAP updates on LAN interfaces.
Do this only when all nodes out this interface are EIGRP peers;
otherwise, loss of SAP information on the other nodes will result. If a
router's LAN interface connects to a NetWare server, as shown in the
figure, do not disable periodic updates. However, Figure
shows that incremental SAP updates on RTC's E0 can safely be configured.
To configure incremental SAP updates
using EIGRP, issue the ipx
sap-incremental eigrp command,
which has the following syntax:
router(config-if)#ipx
sap-incremental eigrp autonomous-system-number [rsup-only]
The rsup-only
keyword is used to indicate that on this interface the system uses EIGRP
to carry reliable SAP update information only. RIP routing updates are
used, and EIGRP routing updates are ignored.
Configure incremental SAP for RTC as
shown in Figure .
Note that in Figure ,
RTC does not need to run IPX RIP. Thus, it is explicitly disabled by
using the command no ipx router
rip in the configuration Figure .
|