Specifications

Management Module Anomalies
Management Module SRN 6.0 Rev 0 Page 36
RingView for Token Ring
Known Anomalies:
Problem 1: RingView cannot fully mapconnections within a ring that is
configured with multiple hubs or concentrators. This is because the Token
Ring device firmware stops mapping MAC addresses to specific ports as
soon as it encounters one of the Ring In/Ring Out ports through which the
hubs are connected. Since SPECTRUM’s fault isolation capability is based
on the connections between models, this firmware limitation may result in
situations where alarms are not reported or are reported incorrectly.
Normally, if SpectroSERVER loses contact with a router that connects to a
Token Ring LAN, the icons within the LAN’s Topology view would flash gray
to indicate that their condition was unknown. If connections within the
ring were not fully mapped, then the Token Ring devices would have no
known neighbors as far as SPECTRUM is concerned, and would thus flash
red.
Solution: When Ring In/Ring Out ports are being used to connect hubs
within a Token Ring LAN, you must resolve port connections manually to
ensure accurate alarms and fault isolation.