Cisco Catalyst WS-X3001 Installation And Configuration Manual page 30

ISL Functional Overview and Specifications
Features
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Specifications
The following tables display the specifications for the Dual-port Fast Ethernet with ISL module.
Table 9
Dimensions (w x d x h)
Packet Buffers
Operating Temperature
Non-operating Temperature
Relative Humidity:
operating
Non-operating Altitude
Safety
EMI Certifications
30 Catalyst Matrix and Expansion Module Installation and Configuration Guide
ISL supports the construction and management of large scale virtual LANs (VLANS) across
internetworks
Support for 64 VLANs (see the VTP section for how these 64 VLANS are chosen from the
1024 VLANS that can be defined)
Also supports
— Ethernet MIB
— IEEE 802.1d (spanning tree) (per VLAN)
— RMON (per port)
Two Fast Ethernet or ISL ports per module
— Maximum of 4 Trunk ports (any combination of ATM and ISL, up to 4) per Catalyst switch
Line speed forwarding
Filtering (non-ISL ports)
1700 address memory per port
— Programmable demand address aging feature
Selectable half/full duplex operation for up to 200Mbps collision-free point-to-point connections
256K input and output buffers per port
ISL Specifications
Function Specification
6.2 x 9 x 0.9 in.
256K in each direction per port
10 to 50 degrees Centigrade
-25 to 75 degrees Centigrade
8 to 80%, non-condensing
40,000 feet
UL 1950, UL-C, EN 60950
FCC Class A (Part 15), VCCI Class 2
EN 55022 A (CE Mark), CISPR-22B