Cabletron Systems CyberSWITCH CSX150 User Manual

Also see for CyberSWITCH CSX150: User guide Quick start guide

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USER’S GUIDE290 CyberSWITCHA PPLET ALK NETWORK R ANGE /NUMBERThe AppleTalk network range (for Extended network) or the AppleTalk network number (forNonExtended network) of the LAN segment that the port is connected to. Specifying 0.0 (forExtended) or 0 (for NonExtended) places the port in discovery mode (a.k.a., non-seed router), inwhich the system learns its configuration information from the seed router. Note that there mustbe at least one seed router on the network. Discovery mode is not supported for WAN ports, andtherefore a valid network range/number needs to be specified.S UGGESTED A PPLE TALK A DDRESS /N ODE I DIf the system is acting as a seed router on this port, then this parameter specifies the suggestedAppleTalk address (Extended) or Node Id (NonExtended), which is used as initial value for theAppleTalk address for the port. The default is no suggested address.Note: An AppleTalk address consists of the network number followed by a node Id. For example,if the network number is 1234, and the node’s Id is 56, the node’s AppleTalk address wouldbe 1234.56.ZONE NAME(S)The AppleTalk zone name(s) for the network that the port is connected to. For ports that are of theExtended network type, you must enter a default zone name, then you may enter any additionalzones names. For ports that are of the NonExtended network type, you must configure one zonename, with no option to configure additional zone names.APPLE TALK PORTS BACKGROUND I NFORMATIONTHE APPLET ALK NETWORK TYPEAn AppleTalk network consists of four basic pieces, the nodes, networks, network numbers, androuters. All these pieces together form an AppleTalk internet. Initial implementation of AppleTalkPhase 1 provided support for up to 254 nodes. Initially the need to have more than 254 nodes on anindividual internet was not a concern, and the initial implementation worked fine.As time passed, a need developed for more than 254 nodes on a network. As an answer to that need,AppleTalk Phase 2 was developed. Phase 2 introduced the fifth component to the AppleTalkinternet, network-number ranges. An AppleTalk network that would continue to use a singlenetwork number would now be identified by a range of network numbers. Each of the networknumbers in the range could support up to 253 nodes.The Extended network type takes advantage of the network-number ranges produced by Phase 2,whereas the NonExtended network type does not use a range of network numbers.D YNAMIC NODE A DDRESS ASSIGNMENTDynamic node address assignment is an addressing scheme that dynamically assigns nodeaddresses rather than permanently associating an address with each node. This can saveconfiguration time (for a LAN port, you are not required to enter an AppleTalk address/node Id),and also allows a node to move between networks without having to worry about addressingconflicts.When a node joins the network, it assigns itself a node Id. It will send out a probe, to ensure that noother node on the network has the same Id. If you have configured a “suggested” AppleTalkaddress/node Id, that is the address/node Id the node includes in its probe.