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3550学习

发布时间:2009-06-01 00:49:57  来源:本站整理
【摘要】: 3550学习
 ?Basics
  ip address ip-address subnet-mask
  
  ip default-gateway ip-address
  
  
  
  hostname string
  
  prompt string
  
  ?CDP
  Default CDP Configuration
  
  CDP global state Enabled
  
  CDP interface state Enabled
  
  CDP timer (packet update frequency) 60 seconds
  
  CDP holdtime (before discarding) 180 seconds
  
  CDP version-2 advertisements Enabled
  
  
  
  cdp timer seconds (Optional)
  
  Set the transmission frequency of CDP updates in seconds.
  
  The range is from 5 to 254; the default is 60 seconds.
  
  
  
  cdp holdtime seconds (Optional)
  
  Specify the amount of time a receiving device should hold the information sent by
  
  your device before discarding it.
  
  The range is from 10 to 255 seconds; the default is 180 seconds.
  
  
  
  cdp advertise-v2 (Optional)
  
  Configure CDP to send version-2 advertisements. This is the default state.
  
  ?DNS
  ip name-server server-address1
  
  ip domain-name name
  
  ip domain-lookup
  
  ?SNMP
  snmp-server host host-addr {traps informs} {version {1 2c}} community-string notification-type
  
  recipient of the trap message.
  
  
  
  snmp-server enable traps mac-notification
  
  send MAC address traps to
  
  
  
  snmp-server enable traps mac-notification
  
  Enable the switch to send MAC address traps
  
  
  
  mac-address-table notification
  
  Enable the MAC address notification feature.
  
  
  
  mac-address-table notification [interval value] [history-size value]
  
  Enter the trap interval time and the history table size.
  
  
  
  snmp trap mac-notification {added removed}
  
  Enable the MAC address notification trap.
  
  
  
  Switch(config)# snmp-server host 172.20.10.10 traps private
  
  Switch(config)# snmp-server enable traps mac-notification
  
  Switch(config)# mac-address-table notification
  
  Switch(config)# mac-address-table notification interval 60
  
  Switch(config)# mac-address-table notification history-size 100
  
  Switch(config)# interface fastethernet0/4
  
  Switch(config-if)# snmp trap mac-notification added
  
  
  
  mac-address-table static mac-addr vlan vlan-id interface interface-id
  
  Add a static address to the MAC address table.
  
  
  
  show mac-address-table address
  
  Displays MAC address table information for the specified MAC address.
  
  
  
  show mac-address-table aging-time
  
  Displays the aging time in all VLANs or the specified VLAN.
  
  
  
  show mac-address-table count
  
  Displays the number of addresses present in all VLANs or the specified VLAN.
  
  

  
  show mac-address-table dynamic
  
  Displays dynamic MAC address table entries only.
  
  
  
  show mac-address-table interface
  
  Displays the MAC address table information for the specified interface.
  
  
  
  show mac-address-table multicast
  
  Displays the Layer 2 multicast entries for all VLANs or the specified VLAN.
  
  
  
  show mac-address-table static
  
  Displays static MAC address table entries only.
  
  
  
  show mac-address-table vlan
  
  Displays the MAC address table information for the specified VLAN.
  
  
  
  snmp-server community private RW
  
  snmp-server community public RO
  
  snmp-server community private@es0 RW
  
  snmp-server community public@es0 RO
  
  snmp-server chassis-id 0x12
  
  ?NTP
  Configure the switch to synchronize only to devices providing authentication key 42
  
  in the device? NTP packets:
  
  Switch(config)# ntp authenticate
  
  Switch(config)# ntp authentication-key 42 md5 aNiceKey
  
  Switch(config)# ntp trusted-key 42
  
  
  
  An NTP association can be a peer association (this switch can either synchronize to
  
  the other device or allow the other device to synchronize to it), or it can be a
  
  server association (meaning that only this switch synchronizes to the other device,
  
  and not the other way around).
  
  
  
  ntp peer ip-address [version number] [key keyid] [source interface] [prefer]
  
  ntp server ip-address [version number] [key keyid] [source interface] [prefer]
  
  
  
  ntp broadcast client
  
  ntp broadcastdelay microseconds
  
  ntp broadcast [version number] [key keyid] [destination-address]
  
  
  
  ntp Access-group {query-only serve-only serve peer} access-list-number
  
  
  
  NTP services are enabled on all interfaces by default.
  
  ntp disable
  
  ntp source type number
  
  ?SDM
  By using Switch Database Management (SDM) templates, you can configure memory
  
  resources in the switch to optimize support for specific features, depending on how
  
  the switch is used in your network.
  
  
  
  The four templates prioritize system memory to optimize support for these types of features:
  
  
  
  ?QoS and security ACEs?he access template might typically be used in an access switch at the network edge where the route table sizes might not be substantial. Filtering and QoS might be more important because an access
  
  switch is the entry to the whole network.
  
  
  
  ?Routing?he routing template maximizes system resources for unicast routing,
  
  typically required for a router or aggregator in the center of a network.

  
  
  
  ?VLANs?he VLAN template disables routing and supports the maximum number of
  
  unicast MAC addresses. It would typically be selected for a Catalyst 3550
  
  used as a Layer 2 switch.
  
  
  
  ?Default?he default template gives balance to all functionalities (QoS, ACLs,
  
  unicast routing, multicast routing, VLANs and MAC addresses).
  
  
  
  sdm prefer {access routing vlan}
  
  1.1. Vlan's
  ?Normal VLAN's
  To configure normal-range VLANs (VLAN IDs 1 to 1005), use the vlan vlan-id global
  
  configuration command to enter config-vlan mode or the vlan database
  
  privileged EXEC command to enter VLAN configuration mode.
  
  
  
  Add ports to a VLAN by using the switchport interface configuration commands:
  
  
  
  Normal-range VLANs are identified with a number between 1 and 1001.
  
  
  
  vlan database
  
  vlan vlan-id name vlan-name
  
  
  
  Assign a port to a VLAN in the VLAN
  
  interface interface-id
  
  switchport mode access
  
  switchport access vlan vlan-id
  
  ?Extended VLAN's
  The VLAN configurations for VLAN IDs 1 to 1005 are saved in the VLAN database.
  
  To configure extended-range VLANs (VLAN IDs 1006 to 4094), you must use config-vlan
  
  mode with V
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