Information Technology Reference
In-Depth Information
Table9-7
AppleTalk: Old Zone Names Appear in Chooser (Phantom Zones) (continued)
Possible Problems
Solution
Invalid zone names
in routing table
AppleTalk does not provide a way to update ZIP tables when
changing the mapping of zone names to networks or cable
ranges.
For example, if the zone name for network number 200 is
Twilight Zone, but you decide to change the zone to No Parking
Zone, the zone name on the interface can be changed, and the
new zone name takes effect locally.
However, unless you keep network 200 off the internetwork
long enough for it to be completely aged out of the routing
tables, some routers will continue to use the old zone name (this
is called a
phantom zone
). Alternatively, if you cannot keep the
network off the internetwork that long, change the underlying
network number when you change the zone name of a cable.
Use the
show running-config privileged exec
command to
view the router configuration. Check the network numbers
configured for each AppleTalk interface.
1.
Invalid zone names
in routing table
(continued)
2.
Make sure that there are no network numbers configured
that were previously assigned to a zone that has been
deleted. Change the cable-range using the
appletalk
cable-range
interface configuration command or disable
the network until it is aged out of routing tables.
3.
Use the
show appletalk zones
command to verify that the
zone no longer appears in the zone list.
AppleTalk: Connections to Services Drop
Symptom:
Users complain that their AppleTalk sessions suddenly drop for no apparent reason.
