Cisco 3631 Spezifikationen PDF herunterladen (Seite 28)

1-8

Software Configuration Guide For Cisco 2600 Series, Cisco 3600 Series, and Cisco 3700 Series Routers

OL-1957-03

Chapter 1 Understanding Interface Numbering and Cisco IOS Software Basics

Understanding Interface Numbering

Some modules have two small slots, labeled W0 and W1, for WAN interface cards. For example,

Figure 1-8 shows the W0 and W1 slots of the 2 Ethernet 2 WAN card slot (2E 2-slot) module. You can

install WAN interface cards into the small module slots (W0 and W1). Integrated Services Digital

Network (ISDN) Basic Rate Interface (BRI) WAN interface cards are keyed so that you can install them

into slot W1 only. Serial WAN interface cards can be installed into either slot, W0 or W1.

Figure 1-8 WAN Interface Card Slots

Cisco 3600 Series Router Unit Numbering

Cisco 3600 series routers unit numbers identify the interfaces on the modules and WAN interface cards

installed in the router. Unit numbers begin at 0 for each interface type, and continue from right to left

and (if necessary) from bottom to top. Modules and WAN interface cards are identified by interface type,

slot number, followed by a forward slash

(/), and then the unit number; for example, Ethernet 0/0.

Note In the Cisco 3660 router, the fixed FastEthernet ports are located in chassis slot 0, and are identified

by:

interface type chassis slot/ unit number

For example: FastEthernet 0/0

Figure 1-9 shows a router with a 2E 2-slot module in slots 0 and 1. Two serial WAN interface cards are

installed in the module in slot 0. One serial and one ISDN BRI WAN interface card are installed in the

module in slot 1.

As shown in Figure 1-9, the unit numbers are as follows:

• Slot 0, Ethernet interface 0, referred to as Ethernet 0/0

• Slot 0, Ethernet interface 1, referred to as Ethernet 0/1

• Slot 0, serial interface 0, referred to as serial 0/0

• Slot 0, serial interface 1, referred to as serial 0/1

• Slot 1, Ethernet interface 0, referred to as Ethernet 1/0

• Slot 1, Ethernet interface 1, referred to as Ethernet 1/1

• Slot 1, serial interface 0, referred to as serial 1/0

• Slot 1, BRI interface 0, referred to as BRI 1/0

Note The 2E 2-slot module described in this example provides both an attachment unit interface (AUI) and

10BASE-T port. Only one of these ports can be used at a time. The module automatically detects

which port, AUI or 10BASE-T, is in use.

STP

ETHERNET 0ETHERNET 1

AUI

ACT

LNK

ACT

ILNK

Slot W1 Slot W0

H8603

1 2 ... 23 24 25 26 27 28 29 30 31 32 33 ... 197 198

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco 3631 Spezifikationen Seite 28

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Cisco 3631