Command Practice Simple Flashcards by Grant Curell

Find the location of a specific MAC address

Enable mode: show mac address-table dynamic address mac-address

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Display all MAC addresses learned on a specific interface

Enable mode: show mac address-table dynamic interface type number

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Display the current CAM table size

Enable mode: show mac address-table count

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Enter a static CAM table entry

Enable mode: Global Config Mode: mac address-table static mac-address vlan vlan-id interface type number

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Clear a CAM entry

Enable Mode: clear mac address-table dynamic [address mac-address | interface type number | vlan vlan-id]

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Select a port

Global Config Mode: interface type module/number

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Select multiple ports

Global Config Mode: interface range type module/number [, type module/number …]orinterface range type module/first-number - last-number

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Define an interface macro

define interface-range macro-name type module/number [, type module/number …] [type module/first-number - last-number] […]interface range macro macro-name

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Identify port.

Interface Config Mode: description description-string

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Set port speed.

Interface Config Mode: speed{10|100|1000|auto}

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Set port mode.

Interface Config Mode: duplex {auto|full|half}

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Detect port error conditions

Global Config Mode: errdisable detect cause [all|cause-name]

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Automatically recover from errdisable

Global Config Mode: errdisable recovery cause [all|cause-name]errdisable recovery interval seconds

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Manually recover from errdisable

Interface Config Mode: shutdownno shutdown

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Create VLAN

Global Config Mode: vlan vlan-numVLAN Config Mode: name vlan-name

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Assign port to VLAN.

Global Config Mode: interface type module/numberInterface Config Mode: switchportInterface Config Mode: switchport mode accessInterface Config Mode: switchport access vlan vlan-num

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Configure trunk.

Global Config Mode: interface type mod/portInterface Config Mode: switchport trunk encapsulation {isl|dot1q|negotiate}Interface Config Mode: switchport trunk native vlan vlav-idInterface Config Mode: switchport trunk allowed vlan {vlan-list|all|{add|except|remove}vlan-list}Interface Config Mode: switchport mode {trunk|dynamic {desirable|auto}}

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Define the VTP domain

Global Config Mode: vtp domain domain-name

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Set the VTP mode

Global Config Mode: vtp mode {server|client|transparent}

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Define an optional VTP password

Global Config Mode: vtp password password

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Configure VTP version

Global Config Mode: vtp version {1|2}

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Enable VTP pruning

Global Config Mode: vtp pruning

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Select VLANs eligiable for pruning on a trunk interface

Global Config Mode: interface type mod/num switchport trunk pruningInterface Config Mode: vlan {add|except|none|remove} vlan-list

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Select a load-balancing method for the switch

Global Config Mode: port-channel load-balance method

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Use a PAgP mode on an interface

Global Config Mode: interface type mod/numInterface Config Mode: channel-protocol pagpInterface Config Mode: channel-group number mode {on|{{auto|desirable}[non-silent]}}

Assign the LACP system priority.

Global Config Mode: lacp system-priority priority

Use an LACP mode on an interface

Global Config Mode: interface type mod/numInterface Config Mode: channel-protocol lacpInterface Config Mode: channel-group number mode{on|passive|active}Interface Config Mode: lacp port-priority priority

Enable STP

Global: spanning-tree vlan-id

Set bridge priority.

Global: spanning-tree vlan vlan-id priority bridge-priority

Set root bridge (macro)

Global: spanning-tree vlan vlan-id root {primary|secondary} [diameter diameter]

Set port cost

int-config: spanning-tree [vlan vlan-id] cost cost

Set port priority

int-config: spanning-tree [vlan vlan-id] port-priority port-priority

Set STP timers

Global: spanning-tree [vlan vlan-id] hello-time secondsGlobal: spanning-tree [vlan vlan-id] forward-time secondsGlobal: spanning-tree [vlan vlan-id] max-age seconds

Set PortFast on an interface

int-config: spanning-tree portfast

Set UplinkFast on a switch

Global: spanning-tree uplinkfast [max-update-rate pkts-per-second]

Set BackboneFast on a switch

Global: spanning-tree backbonefast

Enable root guard (chapter 9)

int-config: spanning-tree guard root

Enable BPDU Guard

int-config: spanning-tree portfast bpduguard default int-config: spanning-tree bpduguard enable

Enable loop guard

int-config: spanning-tree loopguard default int-config: spanning-tree guard loop

Enable UDLD

int-config: udld {enable|aggressive|message time seconds} int-config: udld {enable|aggressive|disable}

Enable BPDU filtering

int-config: spanning-tree bpdufilter default int-config: spanning-tree bpdufilter enable

Look for ports that have been put in an inconsistent state

enable: show spanning-tree inconsistentports

Display the global BPDU Guard, BPDU filter, and Loop Guard states

enable: show spanning-tree summary

Show UDLD status

enable mode: show udld [type mod/num]

Reenable all ports that UDLD has errdisabled

enable mode: udld reset

Enable MST on a switch

Global: spanning-tree mode mst

Enter MST configuration mode

global: spanning-tree mst configuration

Name the MST region

config-mst: name name

Set the configuration revision number

revision version

Define an edge port.

int-config: spanning-tree portfast

Override a port type

int-config: spanning-tree link-type point-to-point

Put a port into layer 2 mode

int-config: switchport

Put a port into layer 3 mode

int-config: no switchport

Define an SVI

(config): interface vlan vlan-id

Show a layer 2 port status

(#)show interface type mod/num switchport

Show a layer 3 port status

(#)show interface type mod/num

Show an SVI status

(#)show interface vlan vlan-id

View the FIB contents

(#)show ip cef

View FIB information for an interface

#show ip cef [type mod/num | vlan vlan-id] [detail]

View FIB information for an IP prefix

#show ip cef [type mod/num | vlan vlan-id] [detail]

View FIB adjacency information

#show adjacency [type mod/num | vlan vlan-id] [summary | detail]

View counters for packets not switched by CEF

#show cef not-cef-switched

Exclude addresses from a DHCP server scope

(config-if)# ip dhcp excluded-address start-ip end-ip

Define a DHCP server scope

(config-if)#ip dhcp pool pool-name

Identify the IP subnet for the server scope

(config-dhcp)# network ip-address subnet-mask

Identify the default router used in the server scope

(config-dhcp)# default-router ip-address [ip-address2] [ip-address3] ...

Define the DHCP server lease time

(config-dhcp)# lease {infinite | {days [hours [minutes]]}}

Enable DHCP relay on a layer 3 interface

(config-if)# ip helper-address ip address

Set the HSRP priority (chapter 13)

standby group priority priority

Set the HSRP timers

standby group timers hello holdtime

Allow router preemption

standby group preempt [delay seconds]

Use group authentication

standby group authentication string

Adjust priority by tracking an interface

standby group track type mod/num decrement-value

Assign the virtual router address

standby group ip ip-address [secondary]

Assign a GLBP priority

glbp group priority level

Allow GLBP preemption

glbp group preempt [delay minimum seconds]

Define an object to be tracked

track object-number interface type mod/num {line-protocol | ip routing}

Define the weighting thresholds

glbp group weighting maximum [lower lower] [upper upper]

Track an object

glbp group weighting track object-number [decrement value]

Choose the load-balancing method

glbp group load-balancing [round-robin | weighted | host-dependent]

Assign a virtual router address

glbp group ip [ip-address [secondary]]

Assign a VRRP router priority (default 100)

vrrp gorup priority level

Alter the advertisement timer (default 1 second)

vrrp group timers advertise [msec] interval

Learn the advertisement interval from the master router

vrrp group timers learn

Disable preempting (default is to preempt)

no vrrp group preempt

Change the preempt delay (default 0 seconds)

vrrp group preempt [delay seconds]

Use authentication for advertisements

vrrp group authentication string

Assign a virtual IP address

vrrp group ip ip-address [secondary]