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