005ccnp课程以应用方式讲解加强版1spoto ccnp20课件34implementing advanced cisco ios features

ImplementingAdvancedCiscoIOSFeaturesSPOTO DynamicHostConfigurationConfiguringaDHCPRouter(config)#ipRouter(config)#ipdhcppool[poolEnablesaDHCPpoolforusebySpecifiesthenetworkandsubnetmaskoftheSpecifiesthedefaultrouterforthepooltoRouter(config-ipipaddressEnablesaCiscoIOSdevicetoobtainanIPaddressfromaDHCPHelperAddressingRoutersdonotforwardbroadcasts,byHelperaddressprovidesselectiveWhyUseaHelper sdonotknowtheserverHelperschangebroadcasttounicasttoreachIPHelperAddressiphelper-addressiphelper-addressEnablesforwardingandspecifiesdestinationaddressforUDPbroadcastChangesdestinationaddressfrombroadcasttounicastdirectedbroadcastipipforward-protocol{udp[port]SpecifieswhichprotocolswillbeOption 电路ID默认是指接收到DHCP请求报的接入交换机Vlan名加接入二层端口名称，如ID（即Remote ID是指接收到DHCP请求报文接入交换机的vlanMAC地址子选项2通常与子选项1共同使用来标识DHCP客户端的信息DHCPVerificationshowshowipdhcp ysrecentactivityontheDHCPshowshowipdhcpserverShowscountinformationaboutstatisticsandmessagesandshowshowiproute ysroutesaddedtotheroutingtablebydebugdebugipdhcpserver{events|packets|EnablesdebuggingontheDHCP息这消能输到控制台,Y或 如果发送到syslog服务器,消息被发送在UDP端口你可能熟悉syslog消息%SYS-5-CONFIG_I:Configuredfromconsoleby%SYS-5-CONFIG_I:Configuredfromconsolebyconsole;SEVERITY:设备上 0Emergency紧急、1Alert：警报、2 、3Error:4Warning5notifications：通知、6Informational7DebuggingMNEMONIC:AcodethatidentifiestheactionP et成功，帮助员工成功，帮助合作伙伴成功IPIPSLAisafeaturethatenablesaCiscorouterorswitchtosimulatespecifictypesoftrafficandsendittoareceiver,calledaresponder. IPSLAprobescansimulatevarioustypesoftraffic,suchasHTTP,FTP,DHCP,UDPjitter,UDPecho,HTTP,TCPconnect,ICMPecho,ICMPpathecho,ICMPpathjitter,andDNS,andcanreportstatisticssuchaspath2）被管理的设备（managed 者网络管理系统 MIB：ManagementInformationBase：管理信息库可以通 认证控 read-only(RO)orread-SNMP版本：V1V2 Thefollowingconfigurationcreatesastandardaccesslistthatallowsonlytrafficsourcedfromthehostat.CreatedCommunity-String“c1sc0”forread-writeaccess.Read-writeaccessispermittedonlyfromthehostspecifiedinaccesslist1.Next,theSNMPserveraddressisgiven,alongwiththetosendtrapsmessagestothatserver.sw1(config)