Cisco CATALYST 3900 4 PORT RJ45 TOKEN RING MODULE Specification Guide
Cisco Systems, Inc.
All contents are Copyright © 1992–2002 Cisco Systems, Inc. All rights reserved. Important Notices and Privacy Statement.
Page 1 of 2
Product Bulletin 1644
Catalyst 3900 and 3920
Token Ring
Switch
End of Sale
Announcement
Introduction
Cisco Systems announces the End of Sale and End of Life for the Catalyst
®
3900 and 3920 Token Ring switches.
Overview
In 1997, Cisco introduced the second-generation family of Token Ring switches
the Catalyst 3900 stackable Token Ring switch,
followed a few months later by the Catalyst 3920 stackable Token Ring switch. These products quickly gained a high level of customer
acceptance and have subsequently been installed in thousands of mission-critical Token Ring networks worldwide. However, since that
time the number of customers continuing to use Token Ring has decreased dramatically, with most customers converting to networks
based on Ethernet. The demand for Token Ring products is now at a very low level. Vendors that produce chips used for the production
of these products are discontinuing those chips, making the continuing production impossible without expensive redesign. Considering
the low level of demand, it is not practical for Cisco to undertake this redesign. Cisco is, therefore, announcing the End of Sale of the
products listed in Table 1, effective February 12, 2003. There are no replacement products. Cisco is making this announcement a full
year prior to actual End of Sale to give customers who have not yet completed migration to Ethernet an opportunity to adjust their plans
as necessary. Table 2 describes the dates associated with this announcement.
Table 1
End of Sale Products
Product
Description
WS-C3900
Catalyst 3900 20-port switch
WS-C3900-2ISL(=)
2-port ISL uplink, UTP
WS-C3900-2ISLF(=)
2-port ISL uplink, MMF, ST
WS-C3900-4R(=)
4-port Token Ring copper module
WS-C3900-4RF(=)
4-port Token Ring fiber module
WS-C3900-STACK(=)
Stack module
WS-C3900-ATMSC(=)
ATM uplink, MMF, SC
WS-C3920
Catalyst 3920 24-port switch
WS-C3900-EMS-LIC
RMON license
WS-C3900-RMB=
Rack mount brackets, Catalyst 3900
WS-C3920-RMB=
Rack mount brackets, Catalyst 3920