Table Of Contents

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

index

Numerics

802.1Q

and trunk ports     7-3

configuration limitations     8-24

encapsulation     8-22, 8-24

native VLAN for untagged traffic     8-29

802.3Z flow control     7-15

A

abbreviating commands     2-3

ABRs     20-36

AC (command switch)     5-11, 5-18

access-class command     17-18

access control entries

See ACEs

access-denied response, VMPS     8-33

access groups

IP     17-19

Layer 3     17-19

viewing     17-21

access lists

See ACLs

access ports

defined     7-2

in switch clusters     5-10

accounting with TACACS+     6-10, 6-16

ACEs

defined     17-2

Ethernet     17-2

IP     17-2

Layer 3 parameters     17-10

Layer 4 parameters     17-10

ACLs

ACEs     17-2

any keyword     17-12

applying

on bridged packets     17-37

on multicast packets     17-39

on routed packets     17-38

on switched packets     17-36

time ranges to     17-15

to an interface     17-18

comments in     17-17

compiling     17-21

configuring with VLAN maps     17-33

defined     17-1, 17-6

determining fit in hardware     17-34

displaying interface     17-21

examples of     17-21

extended IP

creating     17-9

matching criteria     17-7

hardware and software handling     17-5

host keyword     17-12

ACLs (continued)

IP

applying to interface     17-18

creating     17-6

implicit deny     17-8, 17-13, 17-15

implicit masks     17-8

matching criteria     17-3, 17-7

named     17-14

undefined     17-19

violations, logging     17-15

virtual terminal lines, setting on     17-18

limiting actions     17-34

logging messages     17-9

log keyword     17-15

MAC extended     17-27

matching     17-6, 17-19

monitoring     17-20

named     17-14

numbers     17-7

protocol parameters     17-9

QoS     17-2

router     17-2

standard IP

creating     17-8

matching criteria     17-7

supported features     17-5

support for     1-4

time ranges     17-15

unsupported features     17-6

using router ACLs with VLAN maps     17-33

VLAN maps

configuration guidelines     17-27

configuring     17-26

defined     17-3

active router     21-1

addresses

displaying the MAC address table     6-41

dynamic

accelerated aging     9-9

changing the aging time     6-39

default aging     9-9

defined     6-37

learning     6-38

preventing frame forwarding     24-5

removing     6-40

filtering frames by MAC address     24-6

multicast

group address range     22-1

STP address management     9-8

static

adding and removing     6-40

defined     6-37

address resolution     20-10

Address Resolution Protocol

See ARP

adjacency tables, with CEF     20-54

administrative distances

defined     20-62

OSPF     20-42

routing protocol defaults     20-57

advertisements

CDP     12-1

IGRP     20-31

RIP     20-26

VTP     8-4, 8-5, 8-25

aggregated ports

See EtherChannel

aggregate policing     1-4

aging, accelerating     9-9

alarms, RMON     14-3

allowed-VLAN list     8-27

Apply button     3-25

area border routers

See ABRs

ARP

configuring     20-11

definition     20-10

encapsulation     20-12

static cache configuration     20-11

support for     1-2

ASBRs     20-36

audience     xxv

authentication

EIGRP     20-51

HSRP     21-8

NTP associations     6-21

TACACS+

defined     6-10

key     6-13

login     6-13

authentication keys, and routing protocols     20-63

authoritative time source, described     6-18

authorization with TACACS+     6-10, 6-15

autoconfiguration     4-3

automatic discovery

adding member switches     5-16

considerations

beyond a non-candidate device     5-8

brand new switches     5-10

connectivity     5-6

edge device     5-6

management VLANs     5-8

routed ports     5-9

VLANs     5-7

creating a cluster standby group     5-18

in switch clusters     5-4

See also CDP

automatic recovery, clusters     5-11

See also HSRP

autonegotiation

duplex mode     1-2

interface configuration guidelines     7-13

mismatches     25-8

autonomous system boundary routers

See ASBRs

Auto-RP, described     22-8

autosensing, port speed     1-2

B

BackboneFast     1-3, 9-18, 9-35

bandwidth, graphs     3-8

banners

configuring

login     6-37

message-of-the-day login     6-36

default configuration     6-35

when displayed     6-35

binding cluster group and HSRP group     21-9

blocking packets     11-7

booting

boot loader, function of     4-2

boot process     4-1

manually     4-13

specific image     4-14

boot loader

accessing     4-15

described     4-2

environment variables     4-15

prompt     4-15

trap-door mechanism     4-2

bootstrap router (BSR), described     22-8

BPDU     1-4

BPDU guard, STP     9-11, 9-32

bridged packets, ACLs on     17-37

bridge groups

See fallback bridging

Bridge Protocol Data Unit

See BPDU

broadcast flooding     20-21

broadcast packets

directed     20-17

flooded     20-17

broadcast storms     11-1, 20-18

browser configuration     3-1, 5-1

buttons, CMS     3-25

C

cables, monitoring for unidirectional links     13-1

Cancel button     3-25

candidate switch

adding     5-16

automatic discovery     5-4

defined     5-3

HC     5-18

passwords     5-16

requirements     5-3

standby group     5-18

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

caution, description     xxviii

CC (command switch)     5-18

CDP

automatic discovery in switch clusters     5-4

configuring     12-2

default configuration     12-2

description     12-1

disabling for routing device     12-3, 12-4

enabling and disabling on an interface     12-4

enabling and disabling on a switch     12-3

monitoring     12-5

overview     12-1

support for     1-2

transmission timer and holdtime, setting     12-2

updates     12-2

CEF     20-54

CGMP

as IGMP snooping learning method     10-6

clearing cached group entries     22-57

enabling server support     22-38

FastLeave feature     22-13

hosts

joining a group     22-12

leaving a group     22-13

joining multicast group     10-2

overview     22-11

server support only     22-11

switch support of     1-2

change notification, CMS     3-27

Cisco Discovery Protocol

See CDP

Cisco Express Forwarding

See CEF

Cisco Group Management Protocol

See CGMP

Cisco Technical Assistance Center     xxxi

CiscoWorks 2000     1-6, 16-3

classless routing     20-8

class maps for QoS

configuring     18-25

described     18-7

displaying     18-46

class of service

See CoS

Clear Fault option     3-21

client mode, VTP     8-4

Cluster Management Suite

See CMS

clusters, switch

accessing     5-13

adding member switches     5-16

automatic discovery     5-4

automatic recovery     5-11

benefits     1-7

clusters, switch (continued)

command switch configuration     5-15

compatibility     5-4

creating     5-15

creating a cluster standby group     5-18

described     5-1

managing through CLI     5-20

managing through SNMP     5-21

planning considerations

automatic discovery     5-4

automatic recovery     5-11

CLI     5-20

described     5-4

host names     5-13

IP addresses     5-13

passwords     5-14

SNMP     5-14, 5-21

redundancy     5-18

troubleshooting     5-19

verifying     5-19

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

cluster standby group

automatic recovery     5-11

considerations     5-12

creating     5-18

defined     5-2

requirements     5-3

virtual IP address     5-11

See also HSRP

cluster standby-group and HSRP group     21-9

cluster tree

described     3-5

icons     3-5

CMS

accessing     3-26

benefits     1-7

change notification     3-27

described     1-1, 1-6, 3-1

different versions of     3-28

error checking     3-27

features     3-2

interaction modes     3-22

menu bar     3-13

online help     3-23

requirements     3-26

saving configuration changes     3-27

toolbar     3-18

verifying configuration changes     3-27

window components     3-24

command-line interface

abbreviating commands     2-3

command modes     2-1

described     1-6

editing features

enabling and disabling     2-6

keystroke editing     2-6

wrapped lines     2-8

error messages     2-4

filtering command output     2-8

getting help     2-3

history

changing the buffer size     2-5

described     2-5

disabling     2-5

recalling commands     2-5

managing clusters     5-20

no and default forms of commands     2-4

command modes     2-1

commands

abbreviating     2-3

no and default     2-4

setting privilege levels     6-7

command switch

active (AC)     5-11, 5-18

command switch with HSRP disabled (CC)     5-18

configuration conflicts     25-7

defined     5-2

enabling     5-15

passive (PC)     5-11, 5-18

password privilege levels     5-20

priority     5-11

recovery

from failure     25-4

from lost member connectivity     25-7

recovery from command-switch failure     5-11

redundant     5-11, 5-18

replacing

with another switch     25-6

with cluster member     25-4

requirements     5-2

standby (SC)     5-11, 5-18

See also candidate switch, clusters, and cluster standby group

community strings

configuring     5-14, 16-5

for cluster switches     16-3

in clusters     5-14

overview     16-3

SNMP     5-14

configuration conflicts, recovering from lost member connectivity     25-7

configuration examples, network     1-8

configuration files

clearing the startup configuration     B-19

creating using a text editor     B-10

deleting a stored configuration     B-19

described     B-8

downloading

automatically     4-12

preparing     B-10, B-13, B-16

reasons for     B-8

using FTP     B-13

using RCP     B-17

using TFTP     B-11

guidelines for creating and using     B-9

invalid combinations when copying     B-5

limiting TFTP server access     16-9

obtaining with DHCP     4-7

specifying the filename     4-13

system contact and location information     16-8

types and location     B-9

uploading

preparing     B-10, B-13, B-16

reasons for     B-8

using FTP     B-15

using RCP     B-18

using TFTP     B-12

VMPS database     8-34

configuration settings, saving     4-10

configure terminal command     7-7

conflicts, configuration     25-7

congestion-avoidance techniques     18-11

congestion-management techniques     18-11

connectivity problems     25-8

consistency checks in VTP version 2     8-6

conventions

command     xxviii

for examples     xxviii

publication     xxviii

text     xxviii

CoS     1-4, 18-2

CoS-to-DSCP map for QoS     18-34

CoS-to-egress-queue map     18-40

counters, clearing interface     7-19

cross-stack UplinkFast, STP

configuring     9-34

connecting stack ports     9-16

described     9-13

fast-convergence events     9-15

Fast Uplink Transition Protocol     9-14

limitations     9-16

normal-convergence events     9-15

Stack Membership Discovery Protocol     9-14

support for     1-3

D

database, VTP     8-15, 8-17

daylight saving time     6-30

debugging

enabling all system diagnostics     25-12

enabling for a specific feature     25-12

redirecting error message output     25-12

using commands     25-11

default commands     2-4

default configuration

banners     6-35

booting     4-12

CDP     12-2

DNS     6-34

EIGRP     20-48

EtherChannel     19-7

fallback bridging     24-3

HSRP     21-3

IGMP     22-31

IGMP snooping     10-5

IGRP     20-31

initial switch information     4-3

IP addressing, IP routing     20-4

default configuration (continued)

IP multicast routing     22-13

Layer 2 interfaces     7-12

MAC address table     6-39

MSDP     23-4

MVR     10-15

NTP     6-20

OSPF     20-37

password and privilege level     6-3

QoS     18-14

RIP     20-26

RMON     14-3

SNMP     16-4

STP     9-21

system message logging     15-3

system name and prompt     6-32

TACACS+     6-12

UDLD     13-3

VLAN, Layer 2 Ethernet interfaces     8-24

VLANs     8-15

VMPS     8-36

VTP     8-8

default gateway     4-10, 20-15

default networks     20-57

default routes     20-57

default routing     20-2

deleting VLAN from database     8-18

description command     7-16

designing your network, examples     1-8

destination addresses, in ACLs     17-11

device discovery protocol     12-1

device labels     3-12

Device Manager     3-2

See also Switch Manager

device pop-up menu

Front Panel view     3-19

Topology view     3-20

DHCP

autoconfiguration example     4-8

client request message exchange     4-4

configuring

client side     4-3

DNS     4-6

relay device     4-6

server-side     4-5

TFTP server     4-5

lease options

for IP address information     4-5

for receiving the configuration file     4-5

overview     4-3

relationship to BOOTP     4-3

support for     1-2

DHCP relay     1-5

Differentiated Services architecture, QoS     18-1

Differentiated Services Code Point     18-2

Diffusing Update Algorithm (DUAL)     20-47

directed unicast requests     1-2

directories

changing     B-3

creating and removing     B-4

displaying the working     B-3

discovery, clusters

See automatic discovery

Disqualification Code option     3-21

Distance Vector Multicast Routing Protocol

See DVMRP

distance-vector protocols     20-2

distribute-list command     20-62

DNS

and DHCP-based autoconfiguration     4-6

default configuration     6-34

displaying the configuration     6-35

overview     6-33

setting up     6-34

support for     1-2

documentation

feedback     xxx

obtaining

CD-ROM     xxix

world wide web     xxix

ordering     xxx

related     xxix

document conventions     xxviii

domain names     6-33

domain names, VTP     8-9

Domain Name System

See DNS

downloading

configuration files

preparing     B-10, B-13, B-16

reasons for     B-8

using FTP     B-13

using RCP     B-17

using TFTP     B-11

image files

deleting old image     B-23

preparing     B-22, B-25, B-29

reasons for     B-19

using FTP     B-26

using RCP     B-30

using TFTP     B-22

DSCP     1-4, 18-2

DSCP-to-CoS map for QoS     18-37

DSCP-to-DSCP-mutation map for QoS     18-38

DSCP-to-threshold map     18-42

DTP     1-3, 8-22

DUAL finite state machine, EIGRP     20-47

duplex mode, configuring     7-14

DVMRP

all-DVMRP-routers multicast group address     22-11

autosummarization

configuring a summary address     22-54

disabling     22-56

connecting PIM domain to DVMRP router     22-46

enabling unicast routing     22-50

interoperability

with Cisco devices     22-44

with IOS software     22-11

mrinfo requests, responding to     22-49

neighbors

advertising the default route to     22-48

discovery with Probe messages     22-11, 22-44

displaying information     22-49

prevent peering with nonpruning     22-52

rejecting nonpruning     22-51

overview     22-11

routes

adding a metric offset     22-56

advertising all     22-56

advertising the default route to neighbors     22-48

caching DVMRP routes learned in report messages     22-50

changing the threshold for syslog messages     22-54

deleting     22-57

displaying     22-58

favoring one over another     22-56

limiting the number injected into MBONE     22-53

limiting unicast route advertisements     22-44

route table, building     22-11

source distribution tree, building     22-11

support for     1-5

tunnels

configuring     22-46

displaying neighbor information     22-49

dynamic access ports

characteristics     8-3

configuring     8-38

defined     7-2

limit on number of hosts     8-40

dynamic addresses

See addresses

Dynamic Host Configuration Protocol

See DHCP

dynamic port VLAN membership

configuration example     8-40

overview     8-34

reconfirming     8-38, 8-39

troubleshooting     8-40

types of connections     8-38

VMPS database configuration file     8-34

dynamic routing     20-2

Dynamic Trunking Protocol

See DTP

E

editing features

enabling and disabling     2-6

keystrokes used     2-6

wrapped lines     2-8

EIGRP

and IGRP     20-49

authentication     20-51

components     20-47

configuring     20-49

default configuration     20-48

definition     20-47

interface parameters, configuring     20-50

monitoring     20-52

support for     1-5

enable password     6-4

enable secret password     6-4

encapsulation types, Ethernet trunk     8-24

encryption for passwords     6-4

Enhanced IGRP

See EIGRP

environment variables

function of     4-16

location in Flash     4-15

equal-cost routing     1-5, 20-55

error checking, CMS     3-27

error messages

during command entry     2-4

setting the display destination device     15-4

severity levels     15-8

system message format     15-2

EtherChannel

automatic creation of     19-3

configuration guidelines     19-8

configuring

Layer 2 interfaces     19-9

Layer 3 physical interfaces     19-12

Layer 3 port-channel logical interfaces     19-11

default configuration     19-7

displaying status     19-16

forwarding methods     19-5, 19-13

interaction

with STP     19-8

with VLANs     19-8

Layer 3 interface     20-3

load balancing     19-5, 19-13

logical interfaces     19-2

overview     19-1

EtherChannel (continued)

PAgP

aggregate-port learners     19-5

compatibility with Catalyst 1900     19-14

displaying status     19-16

interaction with other features     19-5

learn method and priority configuration     19-14

modes     19-4

overview     19-3

physical learners     19-5

silent mode     19-4

support for     1-2

port-channel interfaces     19-2

port groups     7-3

support for     1-2

Ethernet VLAN

defaults and ranges     8-16

modifying     8-18

events, RMON     14-3

examples

conventions for     xxviii

network configuration     1-8

expert mode     3-22

exterior routes, IGRP     20-31

F

fallback bridging

bridge groups

creating     24-4

described     24-2

displaying     24-12

number supported     24-4

removing     24-4

bridge table

changing the aging time     24-5

clearing     24-12

displaying     24-12

fallback bridging (continued)

connecting interfaces with     7-6

default configuration     24-3

described     24-1

frame forwarding

filtering by MAC address     24-6

flooding packets     24-2

for static addresses     24-5

forwarding packets     24-2

preventing for dynamically learned stations     24-5

to static addresses     24-5

overview     24-1

STP

disabling on an interface     24-12

forward-delay interval     24-10

hello BPDU interval     24-10

interface priority     24-8

maximum-idle interval     24-11

path cost     24-9

switch priority     24-8

VLAN-bridge STP     24-1, 24-2

support for     1-5

SVIs and routed ports     24-1

VLAN-bridge STP     9-8

fallback VLAN name     8-34

fan fault indication     3-5

Fast Uplink Transition Protocol     9-14

feedback to Cisco Systems, web     xxx

FIB     20-54

fiber-optic, detecting unidirectional links     13-1

files

copying     B-4

deleting     B-5

displaying the contents of     B-8

tar

creating     B-6

displaying the contents of     B-6

extracting     B-7

image file format     B-20

file system

displaying available file systems     B-2

displaying file information     B-3

local file system names     B-1

network file system names     B-4

setting the default     B-3

filtering in a VLAN     17-26

filtering non-IP traffic     17-27

filtering show and more command output     2-8

filters, IP

See ACLs, IP

Flash device, number of     B-1

flash updates, IGRP     20-32

flooded traffic, blocking     11-7

flow-based packet classification     1-4

flow control     1-2, 7-15

forward-delay time, STP     9-6, 9-28

Forwarding Information Base

See FIB

forwarding non-routable protocols     24-1

front-panel images

described     3-6

port icons     3-6

port LEDs     3-8

RPS LED     3-7

system LED     3-6

Front Panel view

cluster tree     3-5

described     3-3

pop-up menus     3-19

switch images     3-6

FTP

accessing MIB files     A-2

configuration files

downloading     B-13

overview     B-12

preparing the server     B-13

uploading     B-15

FTP (continued)

image files

deleting old image     B-28

downloading     B-26

preparing the server     B-25

uploading     B-28

G

GBICs

1000BASE-LX/LH module     1-10

1000BASE-SX module     1-10

1000BASE-T module     1-10

1000BASE-ZX module     1-10

GigaStack     1-10

get-next-request operation     16-2, 16-3

get-request operation     16-2, 16-3

get-response operation     16-2

Gigabit GBIC modules

See GBICs

Gigabit Interface Converters