cisco 3550 switch

Cisco 3560 switch interface traffic grabbing vbs scriptTo make it easy for you to view the traffic of the vswitch interface, the customer does not log on to the vswitch, and does not have any network management traffic statistics device. Simply write a vbs script, which is simple and usable. On error resume next dim wshellset WshShell = WScript. createObject ("WScript. shell ") WshShell. run "cmd" WshShell

Cisco switch port broadcast storm settings are more practical. When a port receives a large number of broadcast, unicast, Or multicast packets, a broadcast storm occurs. Forwarding these packets will slow down the network or cause timeout. Using broadcast storm control on ports can effectively avoid network paralysis caused by hardware damage or link failure. By default, broadcast, multicast, and unicast st

No X2Input Flow-control is off, output Flow-control is offARP Type:arpa, ARP Timeout 04:00:00Last input never, output never, output hang neverLast clearing of "show interface" counters neverInput queue:0/2000/0/0 (size/max/drops/flushes); Total Output drops:0Queueing Strategy:fifoOutput Queue:0/40 (Size/max)5 minute input rate 0 bits/sec, 0 packets/sec5 minute output rate 0 bits/sec, 0 packets/sec0 packets Input, 0 bytes, 0 no bufferReceived 0 broadcasts (0 multicasts)0 runts, 0 giants, 0 throt

----------- --------------------------------------------------------GI1/0/1 Ip-mac INACTIVE-NO-SNOOPING-VLANGI1/0/2 Ip-mac Active Deny-all deny-all 24GI1/0/3 Ip-mac INACTIVE-NO-SNOOPING-VLANGI1/0/4 Ip-mac Active Deny-all deny-all 24GI1/0/5 Ip-mac Active Deny-all Deny-all 24GI1/0/6 Ip-mac Active deny-all deny-all 24GI1/0/7 ip-mac AC tive 172.16.24.150 a4:4c:c8:10:63:ee 24gi1/0/8 ip-mac INACTIVE-NO-SNOOPING-VLANGI1/0/9 Ip-mac Active Deny-all deny-all 24GI1/0/10 ip-mac IN

#!/usr/bin/pythonImport SysImport timeImport OSImport Pexpectnow = Time.strftime ('%y-%m-%d ', Time.localtime (Time.time ()))AA = open ('/home/hanlei/test/%s/log.txt '% now, "W")Fout = open ('/home/hanlei/test/%s/log.txt '% now, "W")IP = open ('/home/hanlei/test/switch_ip ', ' R ')PASS = open ('/home/hanlei/test/switch_passwd ', ' R ')While 1:Readip = Ip.readline ()Readpass = Pass.readline ()If not READIP:print ' END 'BreakFoo = pexpect.spawn (' telnet%s '% Readip)Foo.log_file = FoutFoo.expect (

server and the client are in the same network segment and are not DHCP relay agents, for Cisco's DHCP In the case of a server, if a request packet with Option82 is received, it is considered a request message from a DHCP relay agent, and the Giaddr field of the message is checked, but because it belongs to the same network segment, the field is 0.0.0.0 DHCP. The server will consider an illegal address, and this message will be discarded, causing the client to obtain no IP address(iv)

Cisco switch Product Name Description Catalyst nn xx [-C] [-M] [-A/-EN] NN is the serial number of the switch XX for A fixed configuration switch is the number of ports, for A modular switch, the number of slots C indicates that the fiber-optic interface M indicates that the

Calculate the bandwidth of the backboard of a Cisco switch. It is the maximum amount of data that can be transferred between the vswitch interface processor, interface card, and data bus. The higher the bandwidth of the backboard of A vswitch, the stronger the ability to process data, but the design cost will also rise. Www.2cto.com but how can we check whether the bandwidth of A vswitch is sufficient? Obvi

650) this.width=650; "src=" Http://s5.51cto.com/wyfs02/M02/83/64/wKiom1dyIb_TaRePAAA777AJy9A401.png "title=" capture. PNG "alt=" Wkiom1dyib_tarepaaa777ajy9a401.png "/>650) this.width=650; "src=" Http://s2.51cto.com/wyfs02/M02/83/64/wKioL1dyIn7BFKD0AAAcv_9NA24860.png "title=" 1.PNG " alt= "Wkiol1dyin7bfkd0aaacv_9na24860.png"/>In fact, the equipment on the network to prevent a single line failure caused local paralysis, the normal structure is set back to the road network, which is physically prov

After the FLASH space is insufficient, I specially query the hardware configuration of the 6509 core device. The default Flash of the 6509 standard configuration is 64 MB, and the standard IOS size is 32.1 MB, the IOS 12.2 (17a) SX version to be upgraded has a size of 40.6 MB. In this case, it seems that the space is insufficient. However, this problem is well solved. The original IOS in Flash is deleted and then uploaded. So enter the command: Router # delete sup-bootflash: s72033-pk9sv-mz.122-

Cisco switch in the VLAN how to add multiple ports at a time, this is usually used in the process of our configuration, because if one of the add port, the workload will be very large, so need to add multiple ports at once, the following by the small set of specific operations to introduce 1, first through the Consolo port or telnet to connect the switch to ente

Some cisco switch modules organize the TwinGig Converter Module of the Catalyst 3750-E Series Switch: www.2cto.com TwinGig SFP converter can convert the 10 thousand M Ethernet X2 interface into two Gigabit Ethernet Small pluggable (SFP) ports. XENPAK uplink modules of Catalyst 3750G series switches: common optical modules of Ethernet switches include SFP, GBIC, X

) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/82/A7/wKiom1deJrHCVwtlAADCdOtwrPQ145.jpg "/>650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M02/82/A6/wKioL1deJ8Ly_3SlAAB3c1VnNiQ372.jpg "/>Test if NTP synchronization is available on another LinuxCommand:Yum Install NtpdateNtpdate 172.31.251.196650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M01/82/A7/wKiom1deJrKwy7tMAAA60-x1dao326.jpg "/>Iv. Synchronization of SwitchesConfiguration command:Conf tNTP server 172.31.251.196650)

Hostname Public-wanLogging Buffered 65536Service Timestamps Debug datetime localtimeService Timestamps log datetime localtimeService Password-encryptionNo IP domain-lookupVTP mode TransparentEnable Secret publicerrdisable recovery Cause Pagp-flaperrdisable recovery Cause Link-flaperrdisable recovery cause loopbackerrdisable recovery Cause Bpduguarderrdisable recovery interval 30Port-channel load-balance Src-dst-ipVLAN 8Interface Vlan1ShutdownInterface VLAN 8IP address 8.8.8.8 255.255.255.0Interf

A Dell machine with a network card of M is connected to a Cisco switch. The error err-disabled occurs because of link-flap, that is, the network card is up and down too frequently in a short time. This error is not returned when a vswitch interface is changed. The cause is unknown. Link-flap description: Link-flap Error Link flap means that the interface continually goes up and down. the interface

Restricting Server Downloads:Speed 10Srr-queue Bandwidth Limit 50 (at this time the server download is limited to 10M 50 that is 5M)Speed 100Srr-queue Bandwidth Limit 50 (at this time the server download is limited to 100M 50 that is 50M)Obviously this speed limit download command is in line with the port protocol in useLimit server uploads: (If you want to limit upload download to 10M, direct speed 10 OK)1. Start QoS on the switchMLS QoSTo start QoS on the switch2. Define classes, create a clas

-config_i:configuredfromconsoleby consoler1#r1#configureterminalenterconfigurationcommands,oneperline.endwith cntl/z.############ #开启dhcp server function R1 (config) #service dhcpr1 (config) #ip dhcppool NBSP;R123R1 (dhcp-config) #network 123.1.1.0255.255.255.0############ #将客户端的网关指向 dhcp server interface IPR1 (dhcp-config) #default-router123.1.1.1############ #将客户端的DNS指向 dhcpserver Interface IPR1 (dhcp-config) #dns-server123.1.1.1############ #设置租期为1天0时1分R1 (dhcp-config) #lease 1 01###########