IntroductionThere are two kinds of networks in configuring Appletalk interfaces, non-extended and extended. Non-extended is not Phase 1 unless it is used on Ethernet.
All AppleTalk routers on a given SMDS cloud need to agree that the network is either non-extended or extended.
When To Run Non-Extended AppleTalk over SMDSBecause of a number of recent changes to AppleTalk over SMDS, the Cisco TAC recommends that you use a non-extended configuration on your SMDS cloud, unless all the IOS routers are running a software versions 10.2(7), 10.3(4), 11.0, or higher.
Run non-extended AppleTalk if you're running 10.0, 10.2(6), 10.3(3), or earlier anywhere on the AppleTalk over SMDS cloud.
When To Run Extended AppleTalk over SMDSIf you need inter-operability with non-Cisco devices, migrate all your IOS routers on the cloud to version 10.2(7), 10.3(4), 11.0, or higher, and run extended AppleTalk. Also, once all IOS devices are running the newer code, an extended configuration will allow dynamic AARPs on the SMDS Multicast channel, eliminating the need for static-maps.
Non-Extended ExampleAll IOS Routers are configured for non-extended AppleTalk on the SMDS interface. This is done with the appletalk address x.y interface sub-command. SMDS static maps are required and used. Dynamic AARP is not supported on the multicast channel.
interface Serial0 ip address 192.168.200.1 255.255.255.0 encapsulation smds appletalk address 10.1 appletalk zone SMDS smds address c151.0988.1923 smds static-map ip 192.168.200.2 c151.0988.8770 smds static-map appletalk 10.2 c151.0988.8770 smds multicast APPLETALK e151.0988.2232 smds multicast IP e151.0988.2232 smds multicast ARP e151.0988.2232 smds enable-arp
Extended ExampleAll IOS Routers on the SMDS cloud are configured for extended AppleTalk on the SMDS inteface. This is done using the appletalk cable-range x-x interface sub-command. SMDS static maps are not required and not used. Dynamic AARP is supported on the multicast channel.
interface Serial0 ip address 192.168.200.1 255.255.255.0 encapsulation smds appletalk cable-range 10-10 appletalk zone SMDS smds address c151.0988.1923 smds static-map ip 192.168.200.2 c151.0988.8770 smds multicast APPLETALK e151.0988.2232 smds multicast AARP e151.0988.2232 smds multicast IP e151.0988.2232 smds multicast ARP e151.0988.2232 smds enable-arp
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