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Configuring AppleTalk Services
2-8 117366-A Rev. A
Enabling AppleTalk Routing and Bridging on the Same
Interface
If you enable both AppleTalk routing and bridging on the same interface,
configure a bridge filter on the interface to drop all AppleTalk Phase 2 AARP and
DDP packets.
If you do not configure a filter, you may experience problems when you reboot the
router. (This is because the bridge enables ahead of the AppleTalk router, causing
packets to be bridged before AppleTalk routing starts.)
We suggest creating a filter that specifies a drop (with no log) action on all SNAP
packets with Ethertype ranges of 0x809B to 0x809B and 0x80F3 to 0x80F3. The
hierarchical menu for the field is as follows:
Data link – 802.2 SNAP – 802.2 SNAP Ethertype
See Configuring Traffic Filters and Protocol Prioritization for more information
about how to construct filters for the bridge.
Specifying AppleTalk Zone Information
This section describes information specific to configuring AppleTalk zone
information.
Adding or Removing AppleTalk Zones
When a router initially learns about a new network, it sends out query packets
requesting the network’s zone information. The router uses this information to
update its zone table. However, because routers query for this information only
the first time they learn about a network, any changes later made to the network’s
zone list do not propagate to other routers on the internet.
To add, remove, or change an AppleTalk zone from an AppleTalk interface’s zone
list or default zone, follow this procedure:
1. Disable all AppleTalk router interfaces (both Bay Networks and
otherwise) that connect to the network for which the zone name change is
being applied.
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