Cisco Catalyst WS-X3001 Installation And Configuration Manual page 28

The WS-X3009 and WS-X3010 Dual-Port Fast Ethernet with ISL Module
The WS-X3009 and WS-X3010 Dual-Port Fast Ethernet with ISL Module
The Fast Ethernet (100Mbps) expansion module is a dual-port interface that is used to establish a
connection between Catalyst 3000 series switches and high-speed devices, such as servers or
routers. Each of the dual-ports can be configured as Fast Ethernet or ISL mode. 100Mbps Fast
Ethernet is described in the Catalyst Stack Installation and Configuration Guide. For an explanation
of ISL configurations see the section "ISL Functional Overview and Specifications" later in this
document. For configuring ISL trunk ports from a console connection, see the "Console
Configuration" chapter in the Catalyst Stack Installation and Configuration Guide. The dual-port
Fast Ethernet expansion module with ISL is available in two models:
•
•
The following topics are discussed in this section:
•
•
Figure 18
LN K/ FD X
Figure 19
LN K/ FD X
ISL Functional Overview and Specifications
ISL is used to interconnect VLAN-capable Fast Ethernet devices like Catalyst 3000 and Catalyst
5000 switches and Cisco 7000 and Cisco 7500 routers to network servers, or to high-performance
backbone devices such as Fast Ethernet hubs, switches, and routers. The ISL protocol tags a standard
Ethernet frame with the VLAN information associated with that frame. VLAN packet tagging
allows networks to contain VLAN trunks.
28 Catalyst Matrix and Expansion Module Installation and Configuration Guide
WS-X3009 (shown in Figure 18) has dual-port SC fiber-optic connectors.
WS-X3010 (shown in Figure 19) has dual-port UTP (Unshielded Twisted Pair) connectors.
ISL Functional Overview and Specifications
Inserting the Dual Port Fast Ethernet With ISL Module
WS-X3009 ISL Expansion Module
XM IT
TX
RX
RC V
DI AG
1
1
WS-X3010 ISL Expansion Module
XM IT
RC V
DI AG
1
1
TX
RX
DU PL EX
FU LL
HA LF
2
1 2
W S- X3 00 9
DU PL EX
FU LL
HA LF
2
1 2
W S- X3 01 0