Table Of Contents

Numerics - A - B - C - D - E - F - G - H - I - J - L - M - N - P - Q - R - S - T - U - V - W - X -

Index

Numerics

802.1D

See STP

802.1Q

and trunk ports     9-2

configuration limitations     13-13

native VLAN for untagged traffic     13-17

802.1X

See port-based authentication

A

abbreviating commands     2-4

AC (command switch)     5-9, 5-20

access control list

See ACL

access-denied response, VMPS     13-22

accessing

clusters, switch     5-12

command switches     5-9

member switches     5-12

switch clusters     5-12

access list

See ACL

access ports

defined     9-2

in switch clusters     5-7

accounting

with RADIUS     7-27

with TACACS+     7-10, 7-16

ACL     1-4

addresses

displaying the MAC address table     6-26

dynamic

accelerated aging     11-8

changing the aging time     6-22

default aging     11-8

defined     6-20

learning     6-21

removing     6-23

MAC

discovering     6-26

multicast STP address management     11-8

static

adding and removing     6-25

defined     6-20

address resolution     6-26

Address Resolution Protocol

See ARP table

advertisements

CDP     19-1

VTP     13-14, 14-3

aggregated ports

See EtherChannel

aging, accelerating     11-8

aging time

accelerated

for STP     11-8, 11-19

MAC address table     6-22

maximum for STP     11-19

alarms, RMON     21-3

allowed-VLAN list     13-16

ARP table

address resolution     6-26

managing     6-26

attributes, RADIUS

vendor-proprietary     7-29

vendor-specific     7-28

authentication

local mode with AAA     7-31

NTP associations     6-4

RADIUS

key     7-20

login     7-22

TACACS+

defined     7-10

key     7-12

login     7-13

See also port-based authentication

authoritative time source, described     6-2

authorization

with RADIUS     7-26

with TACACS+     7-10, 7-15

authorized ports with 802.1X     8-4

autoconfiguration     4-3

automatic discovery

adding member switches     5-16

considerations

beyond a non-candidate device     5-5, 5-6

brand new switches     5-7

connectivity     5-3

management VLANs     5-5, 5-6

non-CDP-capable devices     5-5

non-cluster-capable devices     5-5

creating a cluster standby group     5-19

in switch clusters     5-3

See also CDP

automatic recovery, clusters     5-8

See also HSRP

autonegotiation

interface configuration guidelines     9-11

mismatches     26-8

auxiliary VLAN

See voice VLAN

B

BackboneFast

described     12-5

enabling     12-13

support for     1-3

banners

configuring

login     6-20

message-of-the-day login     6-19

default configuration     6-18

when displayed     6-18

booting

boot loader, function of     4-1

boot process     4-1

boot loader

described     4-1

trap-door mechanism     4-2

BPDU

error-disabled state     12-2

filtering     12-3

BPDU filtering

described     12-3

enabling     12-11

support for     1-3

BPDU guard

described     12-2

enabling     12-11

support for     1-3

broadcast storm control

configuring     17-2

disabling     17-3

browser configuration     5-1, 5-3

C

cables, monitoring for unidirectional links     18-1

candidate switch

adding     5-16

automatic discovery     5-3

defined     5-3

HC     5-20

passwords     5-18

requirements     5-3

standby group     5-19

See also command switch, cluster standby group, and member switch

cautions     xx

CC (command switch)     5-20

CDP

and trusted boundary     24-7

automatic discovery in switch clusters     5-3

configuring     19-2

default configuration     19-2

described     19-1

disabling for routing device     19-3, 19-4

enabling and disabling

on an interface     19-4

on a switch     19-3

monitoring     19-5

overview     19-1

transmission timer and holdtime, setting     19-2

updates     19-2

CGMP, joining multicast group     16-3

Cisco Access Analog Trunk Gateway     1-10

Cisco CallManager software     1-10

Cisco Discovery Protocol

See CDP

Cisco IOS command-line interface

See CLI

Cisco IP Phones     1-10

Cisco SoftPhone software     1-10

CiscoWorks 2000     1-6, 23-4

clearing interfaces     9-15

CLI

abbreviating commands     2-4

command modes     2-1

described     1-6

editing features

enabling and disabling     2-6

keystroke editing     2-7

wrapped lines     2-8

error messages     2-5

getting help     2-3

history

changing the buffer size     2-5

described     2-5

disabling     2-6

recalling commands     2-6

managing clusters     5-21

no and default forms of commands     2-4

client mode, VTP     14-3

clock

See system clock

clusters, switch

accessing     5-12

adding member switches     5-16

automatic discovery     5-3

automatic recovery     5-8

command switch configuration     5-15

compatibility     5-3

creating     5-15

creating a cluster standby group     5-19

described     5-1

LRE profile considerations     5-15

managing

through CLI     5-21

through SNMP     5-22

planning     5-3

planning considerations

automatic discovery     5-3

automatic recovery     5-8

CLI     5-21

host names     5-12

IP addresses     5-12

LRE profiles     5-15

management VLAN     5-14

passwords     5-12

RADIUS     5-13

SNMP     5-13, 5-22

switch-specific features     5-15

TACACS+     5-13

redundancy     5-19

troubleshooting     5-21

verifying     5-20, 5-21

See also candidate switch, command switch, cluster standby group, member switch, and standby command switch

cluster standby group

automatic recovery     5-11

considerations     5-9

creating     5-19

defined     5-2

requirements     5-2

virtual IP address     5-9

See also HSRP

CMS

advantages     1-6

configuration modes     3-5

described     1-6

Front Panel view

described     3-2

operating systems and supported browsers     3-8

requirements     3-7 to  3-9

Topology view     3-14

wizards     3-6

command-line interface

See CLI

command modes     2-1

commands

abbreviating     2-4

no and default     2-4

setting privilege levels     7-7

command switch

accessing     5-9

active (AC)     5-9, 5-20

command switch with HSRP disabled (CC)     5-20

configuration conflicts     26-7

defined     5-1

enabling     5-15

passive (PC)     5-9, 5-20

password privilege levels     5-22

priority     5-9

recovery

from command-switch failure     5-9

from failure     26-4

from lost member connectivity     26-7

redundant     5-8, 5-19

replacing

with another switch     26-6

with cluster member     26-5

requirements     5-2

standby (SC)     5-9, 5-20

See also candidate switch, cluster standby group, member switch, and standby command switch

community strings

configuring     5-13, 23-7

for cluster switches     23-4

in clusters     5-13

overview     23-3

SNMP     5-13

configuration conflicts, recovering from lost member connectivity     26-7

configuration examples, network

collapsed backbone and switch cluster     1-9

design concepts

network performance     1-7

network services     1-7

large campus     1-10

small to medium-sized network     1-8

configuration files

limiting TFTP server access     23-13

obtaining with DHCP     4-7

system contact and location information     23-13

VMPS database     13-23

configuration modes, CMS     3-5

configuration settings, saving     4-10

configure terminal command     9-5

config-vlan mode     2-2, 13-6

conflicts, configuration     26-7

connectivity problems     26-8

consistency checks in VTP version 2     14-4

console port, connecting to     2-9

conventions

command     xx

for examples     xx

text     xx

CoS

configuring     24-2

configuring priority queues     24-9

defining     24-3

override priority     15-5

trust priority     15-5

counters, clearing interface     9-15

crashinfo file     26-13

D

daylight saving time     6-13

debugging

enabling all system diagnostics     26-12

enabling for a specific feature     26-12

redirecting error message output     26-12

using commands     26-11

default commands     2-4

default configuration

802.1X     8-6

banners     6-18

CDP     19-2

DNS     6-17

EtherChannel     25-8

IGMP filtering     16-22

IGMP snooping     16-6

IGMP throttling     16-22

initial switch information     4-2

Layer 2 interfaces     9-10

MAC address table     6-22

MVR     16-16

NTP     6-4

optional spanning-tree features     12-9

password and privilege level     7-2

QoS     24-3

RADIUS     7-19

RMON     21-3

RSPAN     20-5

SNMP     23-5

SPAN     20-5

STP     11-10

system message logging     22-3

system name and prompt     6-15

TACACS+     7-12

UDLD     18-4

VLAN, Layer 2 Ethernet interfaces     13-13

VLANs     13-7

VMPS     13-24

voice VLAN     15-2

VTP     14-6

default gateway     4-9

deleting VLANs     13-9

description command     9-14

detecting indirect link failures, STP     12-5

device discovery protocol     19-1

Device Manager     3-13

See also Switch Manager

DHCP-based autoconfiguration

client request message exchange     4-4

configuring

client side     4-3

DNS     4-6

relay device     4-6

server-side     4-4

TFTP server     4-5

example     4-8

lease options

for IP address information     4-4

for receiving the configuration file     4-5

overview     4-3

relationship to BOOTP     4-3

discovery, clusters

See automatic discovery

DNS

and DHCP-based autoconfiguration     4-6

default configuration     6-17

displaying the configuration     6-18

overview     6-16

setting up     6-17

documentation, related     xxi

domain names

DNS     6-16

VTP     14-8

Domain Name System

See DNS

DTP     1-4, 13-12

duplex mode, configuring     9-11

dynamic access ports

characteristics     13-3

configuring     13-26

defined     9-2

dynamic addresses

See addresses

dynamic desirable trunking mode     13-12

dynamic port VLAN membership

described     13-22

reconfirming     13-27

troubleshooting     13-29

types of connections     13-26

VMPS database configuration file     13-23

Dynamic Trunking Protocol

See DTP

E

editing features

enabling and disabling     2-6

keystrokes used     2-7

wrapped lines     2-8

enable password     7-4

enable secret password     7-4

encapsulation     24-2

encryption for passwords     7-4

error messages

during command entry     2-5

setting the display destination device     22-4

severity levels     22-8

system message format     22-2

EtherChannel

automatic creation of     25-3

configuration guidelines     25-8

default configuration     25-8

destination MAC address forwarding     25-6

displaying status     25-14

forwarding methods     25-11

interaction with STP     25-8

Layer 2 interfaces, configuring     25-9

load balancing     25-6, 25-11

number of interfaces per     25-2

overview     25-1

PAgP

aggregate-port learners     25-5

compatibility with Catalyst 1900     25-12

displaying status     25-14

interaction with other features     25-5

learn method and priority configuration     25-12

modes     25-3

overview     25-3

silent mode     25-4

support for     1-2

port-channel interfaces

described     25-2

numbering of     25-2

port groups     9-3

source MAC address forwarding     25-6

EtherChannel guard

described     12-7

enabling     12-14

Ethernet VLANs

adding     13-7

defaults and ranges     13-7

modifying     13-7

events, RMON     21-3

examples

conventions for     xx

network configuration     1-7

expert mode     3-6

Express Setup     3-11

extended system ID

STP     11-3, 11-12

Extensible Authentication Protocol over LAN     8-1

F

fallback VLAN name     13-23

fiber-optic, detecting unidirectional links     18-1

files, crashinfo

description     26-13

displaying the contents of     26-13

location     26-13

filtering show and more command output     2-9

forward-delay time

STP     11-5, 11-19

forwarding

See broadcast storm control

FTP, accessing MIB files     A-3

G

get-bulk-request operation     23-3

get-next-request operation     23-3, 23-4

get-request operation     23-3, 23-4

get-response operation     23-3

global configuration mode     2-2

guide

audience     xix

purpose     xix

guide mode     3-5

H

HC (candidate switch)     5-20

hello time STP     11-18

help, for the command line     2-3

history

changing the buffer size     2-5

described     2-5

disabling     2-6

recalling commands     2-6

history table, level and number of syslog messages     22-9

host names

abbreviations appended to     5-20

in clusters     5-12

hosts, limit on dynamic ports     13-29

HP OpenView     1-6

HSRP

automatic cluster recovery     5-11

cluster standby group considerations     5-9

See also clusters, cluster standby group, and standby command switch

I

ICMP ping

executing     26-9

overview     26-8

IDS, using with SPAN     20-2

IEEE 802.1P     15-1

IGMP

joining multicast group     16-3

join messages     16-3

leave processing, enabling     16-10

leaving multicast group     16-4

queries     16-3

report suppression

described     16-5

disabling     16-11

IGMP filtering

configuring     16-22

default configuration     16-22

described     16-21

monitoring     16-27

IGMP groups

configuring the filtering action     16-25

setting the maximum number     16-25

IGMP profile

applying     16-23

configuration mode     16-22

configuring     16-23

IGMP snooping

configuring     16-6

default configuration     16-6

definition     16-1

enabling and disabling     16-7

global configuration     16-7

Immediate Leave     16-5

method     16-7

monitoring     16-12

VLAN configuration     16-7

IGMP throttling

configuring     16-25

default configuration     16-22

described     16-21

displaying action     16-27

Immediate-Leave, IGMP     16-5

ingress port scheduling     24-3

interface

number     9-4

range macros     9-8

interface command     9-4, 9-5

interface configuration mode     2-3

interfaces

Cisco IOS supported     1-6

configuration guidelines     9-11

configuring     9-5

configuring duplex mode     9-11

configuring speed     9-11

counters, clearing     9-15

described     9-14

descriptive name, adding     9-14

displaying information about     9-15

IOS supported     1-5

monitoring     9-14

naming     9-14

physical, identifying     9-4

range of     9-6

restarting     9-16

shutting down     9-16

supported     9-10

types of     9-1

interfaces range macro command     9-8

Intrusion Detection System

See IDS

inventory, cluster     5-21

IP addresses

candidate or member     5-3, 5-12

cluster access     5-2

command switch     5-2, 5-9, 5-12

discovering     6-26

management VLAN     5-14

redundant clusters     5-9

standby command switch     5-9, 5-12

See also IP information

ip igmp profile command     16-22

IP information

assigned

manually     4-9

through DHCP-based autoconfiguration     4-3

default configuration     4-2

IP multicast routing and IGMP snooping     16-1, 16-6

IP phones

and QoS     15-1

configuring     15-3

trusted boundary for QoS     24-6

IPv4     1-1

IPv6     1-1

IP version 4     1-1

IP version 6     1-1

J

Java plug-in configuration     5-1, 5-3

join messages, IGMP     16-3

L

LACP

See EtherChannel

Layer 2 frames, classification with CoS     24-1

Layer 2 interfaces, default configuration     9-10

Layer 2 traceroute

and ARP     26-11

and CDP     26-10

described     26-10

IP addresses and subnets     26-11

MAC addresses and VLANs     26-10

multicast traffic     26-10

multiple devices on a port     26-11

unicast traffic     26-10

usage guidelines     26-10

Layer 2 trunks     13-12

leave processing, IGMP     16-10

line configuration mode     2-3

links, unidirectional     18-1

login authentication

with RADIUS     7-22

with TACACS+     7-13

login banners     6-18

log messages

See system message logging

loop guard

described     12-9

enabling     12-15

support for     1-3

LRE profiles, considerations in switch clusters     5-15

M

MAC addresses

adding

sticky secure     17-5

aging time     6-22

and VLAN association     6-21

building the address table     6-21

default configuration     6-22

discovering     6-26

displaying     6-26

dynamic

learning     6-21

removing     6-23

static

adding     6-25

characteristics of     6-25

removing     6-25

MAC address multicast entries, monitoring     16-13

MAC address-to-VLAN mapping     13-22

macros

See SmartPort macros

management options

benefits

clustering     1-6

CMS     1-6

CLI     2-1

overview     1-5, 1-6

management VLAN

changing     5-14

considerations in switch clusters     5-5, 5-6, 5-14

discovery through different management VLANs     5-6

discovery through same management VLAN     5-5

IP address     5-14

maximum aging time

STP     11-19

membership mode, VLAN port     13-3

member switch

adding     5-16

automatic discovery     5-3

defined     5-1

managing     5-21

passwords     5-12

recovering from lost connectivity     26-7

requirements     5-3

See also candidate switch, cluster standby group, and standby command switch

menu bar

variations     3-4

messages

to users through banners     6-18

MIBs

accessing files with FTP     A-3

location of files     A-3

overview     23-1

SNMP interaction with     23-4

supported     A-1

mirroring traffic for analysis     20-1

mismatches, autonegotiation     26-8

monitoring

cables for unidirectional links     18-1

CDP     19-5

IGMP

filters     16-27

snooping     16-12

interfaces     9-14

multicast router interfaces     16-13

MVR     16-20

network traffic for analysis with probe     20-1

port protection     17-12

speed and duplex mode     9-12

traffic flowing among switches     21-1

traffic suppression     17-12

VLANs     13-11

VMPS     13-28

VTP     14-15

MSTP

BPDU filtering

described     12-3

enabling     12-11

BPDU guard

described     12-2

enabling     12-11

configuration guidelines     12-10

default optional feature configuration     12-9

EtherChannel guard

described     12-7

enabling     12-14

instances supported     11-9

interface state, blocking to forwarding     12-1

interoperability and compatibility among modes     11-9

loop guard

described     12-9

enabling     12-15

Port Fast

described     12-1

enabling     12-10

preventing root switch selection     12-8

root guard

described     12-8

enabling     12-14

shutdown Port Fast-enabled port     12-2

multicast groups

and IGMP snooping     16-6

Immediate Leave     16-5

joining     16-3

leaving     16-4

static joins     16-9

multicast router interfaces, monitoring     16-13

multicast router ports, adding     16-8

Multicast VLAN Registration

See MVR

MVR

configuring interfaces     16-18

default configuration     16-16

described     16-14

modes     16-18

monitoring     16-20

setting global parameters     16-17

N

native VLAN

configuring     13-17

default     13-17

network examples

collapsed backbone and switch cluster     1-9

design concepts

network performance     1-7

network services     1-7

large campus     1-10

small to medium-sized network     1-8

network management

CDP     19-1

RMON     21-1

SNMP     23-1

Network Time Protocol

See NTP

no commands     2-4

nontrunking mode     13-12

normal-range VLANs

configuration modes     13-5

defined     13-1

NTP

associations

authenticating     6-4

defined     6-2

enabling broadcast messages     6-6

peer     6-5

server     6-5

default configuration     6-4

displaying the configuration     6-10

overview     6-2

restricting access

creating an access group     6-8

disabling NTP services per interface     6-9

source IP address, configuring     6-9

stratum     6-2

synchronizing devices     6-5

time

services     6-2

synchronizing     6-2

P

PAgP

See EtherChannel

pass-through mode     24-8

passwords

default configuration     7-2

encrypting     7-4

in clusters     5-12, 5-18

overview     7-1

recovery of     26-2

setting

enable     7-3

enable secret     7-4

Telnet     7-5

with usernames     7-6

VTP domain     14-8

path cost

STP     11-16

PC (passive command switch)     5-9, 5-20

per-VLAN Spanning Tree plus (PVST+)     11-16

physical ports     9-1

PIM-DVMRP, as snooping method     16-8

ping

character output description     26-9

executing     26-9

overview     26-8

Port Aggregation Protocol

See EtherChannel

See PAgP

port-based authentication

authentication server

defined     8-2

RADIUS server     8-2

client, defined     8-2

configuration guidelines     8-8

configuring

802.1X authentication     8-9

host mode     8-14