Table Of Contents

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

Index

Numerics

10/100 port speed, setting4-4

802.1Q

example11-8, 11-18

mapping VLANs to ISL10-10

overview11-1

restrictions11-4

supported switches (table)11-4

802.1x authentication

configurable parameters28-9

overview28-8

using a RADIUS server for VLAN assignment28-10

A

accelerator module, switch fabric

See switch fabric accelerator module

accounting

configuration guidelines28-63

disabling28-65

enabling28-64

overview28-61

See also RADIUS accounting; TACACS+ accounting

adding multicast filter profiles15-21

addresses

See IP addresses; MAC addresses

Address Resolution Protocol

See ARP

administration

switch27-1, 35-1

administrative groups, EtherChannel6-6

advertisements

See VTP advertisements

aliases

See command aliases; IP aliases

aliases, command2-7

ARP

configuring entries27-8

assigning port filter associations15-24

attempts, limiting telnet28-13

audiencexxiii

authentication

See 802.1x authentication, Kerberos authentication; local authentication; login authentication; NTP authentication; RADIUS authentication; TACACS+ authentication

authorization

overview28-54

See also TACACS+ authorization28-56

autonegotiation

duplex4-5

speed4-5

trunks11-2

auxiliary VLANs

dynamic VLAN membership12-14

software support10-5

B

BackboneFast

adding a switch (figure)8-18

disabling8-17

displaying statistics8-16

enabling8-16

multiple spanning tree7-14

overview8-14

backplane channel module33-3

banners

See login banners

boot configuration

clearing system flash29-7

ignoring NVRAM29-6

BOOT environment variables

clearing29-7, 29-8

default29-4

displaying29-8

overview29-3

setting29-7, 29-8

boot field

overview29-2

setting29-4

BPDU filter

multiple spanning tree7-14

BPDU guard

disabling8-9

enabling8-8

multiple spanning tree7-14

BPDU overview7-2

BPDU skewing

configuring7-42

understanding7-42

bridge identifiers

MAC addresses7-12

PVST+7-21

bridge protocol data unit

See BPDU

C

Catalyst 2948G switches, overview (table)1-2

Catalyst 2980G switches, overview (table)1-3

Catalyst 4000 family switches, overview (table)1-1

CDP

default configuration21-1

disabling globally21-2

disabling on ports21-3

displaying neighbor information21-5

enabling globally21-2

enabling on ports21-3

overview21-1

setting holdtime21-4

setting message interval21-4

CGMP

clearing multicast groups15-18

clearing multicast router ports15-18

configuring multicast groups15-7, 15-17

disabling15-8

disabling fast-leave processing15-8

displaying multicast groups15-7

enabling15-4

enabling fast-leave processing15-5, 15-6

joining multicast groups15-2

leaving multicast groups15-2

overview15-1

specifying multicast router ports15-16

viewing statistics15-7

channel modes, EtherChannel (table)6-5

LACP6-16

checksum, verifying Flash file31-7

CIDR

static routes and27-9

Cisco Discovery Protocol

See CDP

Cisco Group Management Protocol

See CGMP

CiscoWorks200024-16

CIST7-14

classification

frames14-3

classless interdomain routing

See CIDR

class of service

See CoS

clear boot system flash command29-7

CLI

command aliases2-7

ROM monitor2-8

switch

accessing2-2

designating IP addresses2-8

designating IP aliases2-8

designating MAC addresses2-8

designating modules2-7

designating ports2-7

designating VLANs2-7

help2-4

history substitution2-5

operating2-3

clock, setting27-4

command aliases

creating27-6

using2-7

command-line interface

See CLI

Common and Internal Spanning Tree

See CIST7-14

Common Spanning Tree

See CST7-13

common spanning tree

See CST

community ports

definition10-12

community strings

defining24-6

overview24-5

CONFIG_FILE variable

setting recurrence29-5

configuration

clearing the32-8

configuration files

creating32-2

downloading via RCP32-6

downloading via TFTP32-4

guidelines32-1

uploading preparation32-5, 32-7

uploading to RCP server32-7

uploading to TFTP server32-5

configuration guidelines

TACACS+ accounting28-63

configuration register

default setting29-4

ignoring NVRAM at boot29-6

overview29-2

setting boot field29-4

setting CONFIG_FILE recurrence29-5

configurations

IGMP traffic filtering15-18

configuring

multicast filtering15-21

port IP multicast filtering15-21

configuring a switch

using a file on an rcp server32-6

console port

disconnecting user sessions20-8

establishing connections2-2

monitoring user sessions20-8

SLIP and3-8

system message logging settings34-5

conventions, documentxxvi

CoS

configuring default switch values14-5

drop thresholds

mapping14-6

transmitting14-3

Layer 2 CoS values14-2

reverting to default14-5

CST7-13

VLAN 17-17

D

databases

downloading VMPS12-10

See also VMPS databases

date, setting27-4

daylight saving time

disabling adjustment36-7

enabling adjustment36-5

default configurations

Ethernet4-2

Fast Ethernet4-2

TACACS+ accounting28-63

default gateway, configuring3-7

default IGMP filter configuration15-19

denying filter match-action15-22

DHCP

releasing lease3-11

renewing lease3-11

sc0 interface and3-10

disabling IGMP multicast filtering15-20

DISL

See DTP

DNS

clearing domain names35-3

default configuration35-1

disabling35-3

enabling35-2

overview35-1

setting domain names35-2

setting up35-2

system name and27-1

system prompt and27-1

DNS servers

clearing35-2

specifying35-2

documentation

conventionsxxvi

organizationxxiii

relatedxxv

domain names

clearing35-3

setting35-2

Domain Name System

See DNS

downloading

configuration files32-4, 32-6

software images30-2, 30-6

drop thresholds

CoS mapping14-6

transmit queue14-3

DTP

non-Cisco devices and11-3

overview11-2

duplex mode

Fast Ethernet4-5

Dynamic Host Configuration Protocol

See DHCP

dynamic ports

troubleshooting12-11

dynamic port VLAN membership

See VMPS

Dynamic Trunking Protocol

See DTP

E

enable mode, switch CLI2-3

enable password

recovering lost28-18

setting28-16

enabling IGMP multicast filtering15-20

enabling IGMP traffic filtering15-21

encapsulation type descriptions, trunks (table)11-3

encryption

See secure shell encryption

environment variables

See BOOT environment variables

errdisable timeout, configuring4-7

error messages

system message logging (syslog)34-1

VMPS (table)12-11

establishing multicast filter profiles15-21

EtherChannel

administrative groups6-6

channel modes (table)6-5

LACP6-16

configuration guidelines6-3

configuring6-6

configuring administrative groups6-7

displaying PAgP statistics6-12

displaying statistics6-11

EtherChannel IDs6-6

frame distribution6-2

hardware support6-2

maximum number of channels supported6-4

modes6-5

modes, using LACP6-16

overview6-1

PAgP and6-5

port costs6-8

port-VLAN costs6-9

sample configuration11-8

See also Fast EtherChannel; Gigabit EtherChannel

Ethernet

autonegotiation4-5

checking connectivity4-8

default configuration4-2

overview4-1

setting port duplex4-5

setting port name4-3

setting port priority4-4

setting port speed4-4

See also protocol filtering

examples, conventionsxxvi

extended-range VLANs

See VLANs

F

Fast EtherChannel

example6-13

overview6-2

See also EtherChannel; Gigabit EtherChannel

Fast Ethernet

autonegotiation4-5

checking connectivity4-8

default configuration4-2

overview4-1

setting port duplex4-5

setting port name4-3

setting port priority4-4

setting port speed4-4

See also protocol filtering

fiber-optic cables, detecting unidirectional links23-1

filtering

IGMP actions15-18

filters, protocol

See protocol filtering

Flash file system

copying files31-4

deleting files31-5

listing files31-3

restoring deleted files31-6

setting configuration modes31-2

setting default devices31-1

verifying checksum31-7

verifying file checksum31-7

flow control

configuring5-8

overview5-1

forward delay timer7-40

frame classification

overview14-3

frame distribution, EtherChannel6-2

G

GARP Multicast Registration Protocol

See GMRP

GARP timers

setting13-6, 15-14

GARP VLAN Registration Protocol

See GVRP

Gigabit EtherChannel

example6-14

See also EtherChannel; Fast EtherChannel

Gigabit Ethernet

checking connectivity5-9

configuring flow control5-8

configuring port negotiation5-8

default configuration5-6

flow control5-1

port negotiation5-3

port negotiation link states (table)5-3

setting port names5-7

setting port priority5-7

GMRP

clearing statistics15-16

default configuration15-9

disabling forward-all option15-12

disabling globally15-16

disabling per-port15-11

enabling forward-all option15-11

enabling globally15-10

enabling per-port15-10

overview15-3

registration15-12to 15-13

setting timers15-14

software requirements15-9

viewing statistics15-15

group profiles

IGMP multicast15-18

GVRP

clearing statistics13-8

configuring registration13-5

disabling13-8

enabling13-3

registration13-5

setting timers13-6

viewing statistics13-7

H

hello time

timer7-40

history

switch CLI2-5

I

I-BPDU7-14

ICMP

IP traceroute20-12

time-exceeded messages20-12

using ping20-9to 20-10

ID and MAC addresses, bridge7-12

IEEE 802.1Q

See 802.1Q

IEEE 802.1x

See 802.1x authentication

IGMP

configuration guidelines15-4

joining multicast groups15-2

leaving multicast groups15-2

overview15-1

using traffic filtering15-19

IGMP filtering

software requirements15-19

IGMP filter match-action

denying and verifying15-22

permitting and verifying15-22

IGMP multicast filtering

disabling and verifying15-20

enabling and verifying15-20

IGMP traffic filtering15-18

images

See software images; system images

in-band (sc0) interface

See sc0 interface

inferior BPDUs, BackboneFast and8-14

interfaces

me1 (out-of-band management)3-4, 3-6

sc0 (in-band)3-4, 10-2

sl0 (SLIP))3-8

Internal Spanning Tree

See IST7-13

Internet Control Message Protocol

See ICMP

Internet Group Management Protocol

See IGMP

Inter-Switch Link

See ISL

IP addresses

adding to IP permit list18-2

automatic assignment3-2

CIDR27-9

clearing from IP permit list18-4

creating aliases27-7

default gateway3-7

designating2-8

DHCP and3-10

me1 interface and3-6

RARP and3-10

sc0 interface and3-5

sl0 interface and3-10

static routes27-9

VLANs and10-2

IP aliases

creating27-7

designating2-8

IP multicast

CGMP and15-4

GMRP and15-9

group entries15-16

overview15-1

router ports and group entries15-16

See also multicast groups; multicast routers

IP permit lists

adding addresses18-2

clearing entries18-4

default configuration18-2

disabling18-4

enabling18-3

overview18-1

IP traceroutes

executing20-13

overview20-12

ISL

mapping 802.1Q VLANs10-10

overview11-1

supported switches (table)11-4

isolated ports

definition10-12

IST

MST regions7-13

ISTP7-13

K

Kerberos authentication

configuration guidelines28-12

copying SRVTAB files28-39

defining realm28-37

disabling credentials forwarding28-41

enabling28-36

enabling credentials forwarding28-40

overview28-5

servers, specifying28-38

terminology28-5, 28-8

keys

See RADIUS keys; TACACS+ keys

L

LACP

configuration parameters6-17

configuration procedures6-18

modes6-16

Layer 2 traceroute

utility20-11

leave processing, CGMP

disabling15-8

enabling15-5, 15-6

limiting telnet attempts28-13

Link Aggregation Control Protocol

See LACP

listing all multicast filters15-23

listing port filter associations15-24

load balancing7-13

load sharing, trunking and11-12

local authentication

configuration guidelines28-12

default configuration28-11, 28-63

disabling28-17

enabling28-15

overview28-2

password recovery28-18

setting enable password28-16

local user authentication

deleting an account28-18, 28-20

disabling28-20

enabling28-19

overview28-3

setting passwords28-19

location, setting