FastEthernet0/29 is up, line protocol is up (connected)
下面列出cisco二层、三层交换机端口不同显示状态的线路连接情况：
思科交换机路由知识
二层交换机端口状态：
三层交换机端口状态：
6509-1#sh ip int brief
Interface IP-Address OK? Method Status Protocol Vlan1 unassigned YES NVRAM administratively down down Vlan75 211.100.2.113 YES NVRAM up up Vlan501 211.100.34.1 YES NVRAM administratively down down GigabitEthernet1/1 unassigned YES NVRAM up down GigabitEthernet1/2 unassigned YES NVRAM administratively down down GigabitEthernet3/1 211.100.2.45 YES NVRAM up up FastEthernet5/22 unassigned YES unset up up FastEthernet5/23 unassigned YES unset up down FastEthernet5/25 unassigned YES unset administratively down down
6509-1#sh int description
Interface Status Protocol Description
Vl10 admin down down
Vl501 admin down down Share34.1
Vl583 up up DongFangWangJing1
Vl701 admin down down ChengHeWang 20041229
Gi1/2 admin down down
Gi3/1 up up To M320 G0/2/3
Gi3/5 up down
Fa5/5 up up YiFangDa Ip=***** 20060601
Fa5/11 up down TianYuanKeJi ip=**** 20060525
Fa5/25 admin down down
6509-1#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
思科交换机路由知识
Internet 192.168.10.98 35 0010.db76.8f80 ARPA FastEthernet6/48
Internet
Internet
Internet
Internet
6509-1#sh int status
Port Name Status Vlan Duplex Speed Type
Gi1/1 notconnect routed full 1000 No GBIC
Gi1/2 disabled routed full 1000 No GBIC
Gi4/3 disabled 747 full 1000 1000BaseS
Gi3/1 To M320 G0/2/3 connected routed full 1000 1000BaseSX
Gi3/3 disabled 1 full 1000
Fa5/1 To 2950-4 0/1 connected trunk full 100 10/100BaseTX
cisco7507#sh version
Cisco Internetwork Operating System Software
IOS (tm) RSP Software (RSP-PV-M), Version 12.0(17)S, EARLY DEPLOYMENT RELEASE
――ISO版本信息
ROM: System Bootstrap, Version 11.1(8)CA1, EARLY DEPLOYMENT RELEASE SOFTWARE
(fc1) ――ROM版本信息
cisco7507 uptime is 19 weeks, 3 days, 4 hours, 6 minutes －－设备开机时间
System image file is "slot0:rsp-pv-mz.120-17.S.bin" ――Flash中的IOS映像文件名
cisco RSP4 (R5000) processor with 262144K/2072K bytes of memory. ――处理器信息
1 GEIP controller (1 GigabitEthernet).
3 VIP2 R5K controllers (4 FastEthernet)(2 Serial)(2 POS).
4 FastEthernet/IEEE 802.3 interface(s)
1 GigabitEthernet/IEEE 802.3 interface(s)
2 Serial network interface(s)
2 Packet over SONET network interface(s)
123K bytes of non-volatile configuration memory. ――NVRAM值
Configuration register is 0x2102 ――配置存储器值
查看及修改系统当前日志设置和缓冲区里的日志信息：
cisco7507#sh logging
Syslog logging: enabled (0 messages dropped, 0 flushes, 0 overruns)
Console logging: level debugging, 1957 messages logged ――控制台的日志信息
Monitor logging: level debugging, 73 messages logged ――Telnet客户端发送的系统日志
Buffer logging: disabled ――缓冲区日志
Logging Exception size (65536 bytes)
Trap logging: level informational, 472 message lines logg
――向SNMP管理软件发送的系统日志
cisco7507#conf t
cisco7507(config)#logging buffer
211.100.28.171 53 0030.4857.353c ARPA Vlan584 211.100.21.161 - 00d0.0106.5800 ARPA Vlan755 211.100.27.169 0 000f.b587.b194 ARPA Vlan705 211.100.21.165 0 Incomplete ARPA
思科交换机路由知识
cisco7507(config)#no logging buffer
18、限流方法：
Cisco设备制定限流策略以及应用：
Switch# conf t
Switch (config)# access-list 1 permit any
Switch (config)# class-map match-all c9M
Switch (config-cmap)# match access-group 1
Switch (config-cmap)# exit
Switch(config)# policy-map p9M
Switch (config-pmap)# class c9M
Switch (config-pmap-c)# police 9000000 4096 exceed-action drop
Switch (config-pmap-c)# exit
Switch# conf t
Switch(config)# interface f0/13
Switch(config-if)# service-policy input p9M