Cisco 3251 Scheda tecnica - Pagina 9

Sfoglia online o scarica il pdf Scheda tecnica per Router di rete Cisco 3251. Cisco 3251 13. Mobile access router

Feature Summary

• 32-bit PCI bus Version 2.1 running at 25 MHz

• Support for Cisco 12-in-1 serial standards EIA/TIA-232, EIA/TIA-449, EIA/TIA-530, EIA/TIA-530A, X.21, and

V.35 in both DTE and DCE modes

Signal Overview

Cisco 12-in-1 Serial

• The supported protocols are EIA232, EIA449, EIA530, EIA530(A), X.21, and V.35 in both DTE and DCE

modes.

• Conﬁguration is selected by decoding the cable type bits.

Signals are provided through two 60-pin multifunction (two 12-in-1 and LED) headers.

Cisco 3201 Fast Ethernet Switch Mobile Access Router Interface Card

Scheduled to be available in December 2002, the FESMIC is a Fast Ethernet switch mobile interface card. The

FESMIC provides four (only two on the Cisco 3220 model) 10/100 autosensing switch signals. The FESMIC is based

on PC/104-Plus Version 1.2 electrical and mechanical speciﬁcation standards.

Feature Summary

• Four 10/100 autosensing switch signals

• Auto-MDIX, which automatically detects and corrects Ethernet crossed cabling, eliminating the need for

crossover cables

• Support for 802.1d standard bridging, 802.1Q trunking, and 802.1p class of service (CoS)

• Support for Layer 3 routing between distinct LANs or VLANs on the FESMIC and other LAN or VLAN routing

interfaces within the Cisco 3200 Mobile Access Router

Signal Overview

The FESMIC has four Ethernet headers (the Cisco 3220 model has only two). Each Ethernet header consists of the

following signals:

• One pair of differential signals for transmit

• One pair of differential signals for receive

One additional header provides signals for LEDs on the FESMIC.

Cisco Systems, Inc.

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