background image
Integrated Routing Protocols 415
Figure 6-19
IP-RIP, IPX-RIP, and RTMP Updates
A failure of Router1's E0 interface would cause IP RIP, IPX RIP, and AppleTalk RTMP to
advertise that the associated subnet/network/cablerange was not accessible. Each routing
protocol would send its own updates, as diagrammed in Figure 6-20.
Figure 6-20
Multiple Routing Updates--Separate Multiprotocol Routing
Integrated multiprotocol routing uses a single routing protocol to propagate routing information
for multiple routable protocols. EIGRP performs integrated multiprotocol routing for IP, IPX,
and AppleTalk. (EIGRP and Integrated IS-IS can also do integrated multiprotocol routing for
IP and OSI CLNS.) Figure 6-21 diagrams the basic idea behind integrated multiprotocol
routing.
IP Subnet 10.1.1.0/ 24
IPX Network 1
AppleTalk Cablerange 1-1
IP Subnet 10.1.3.0/ 24
IPX Network 3
AppleTalk Cablerange 3-3
IP Subnet 10.1.2.0/ 24
IPX Network 2
AppleTalk Cablerange 2-2
IP RIP (3 routes)
IPX RIP (3 routes)
AppleTalk RTMP (3 routes)
R1
S0
R2
Router A
IP
Routing
Table
RIP
RIP
RTMP
updates
updates
updates
IPX
Routing
Table
AppleTalk
Routing
Table
ch06.fm Page 415 Monday, March 20, 2000 5:11 PM