misconfig

interface status is err-Disable, the show interfaces status err-disabled command can be used to view the cause of triggering err-Disable.The following is an example of bpduguard. The spanning-tree bpduguard enable is configured on the port connected to the switch.SW1 # Show interfaces status err-DisabledPort name Status reasonFa0/47 err-disabled bpduguardThe cause of err-Disable generated by the interface can be viewed by the following command. The default configuration of the system is that al

????????????????? ??????????????Udld EnabledBpduguard EnabledSecurity-violation Enabled Channel-misconfig EnabledPagp-flap EnabledDTP-flap EnabledLink-flap EnabledL2ptguard EnabledSpecified cure-violation EnabledGBIC-invalid EnabledDHCP-rate-limit EnabledMac-limit EnabledUnicast-flood EnabledARP-inspection Enabled Timer interval: 300 secondsInterfaces that will be enabled at the next Timeout: Interface errdisable reason time left (SEC)????????? ????

of interface err-disable. C3750X-5F-I02-2-252#showinterfacesstatuserr-disabledPortNameStatusReasonErr-disabledVlansGi1/0/8"HTZQNetwork"err-disabledloopbackGi1/0/9err-disabledloopbackGi1/0/10err-disabledloopbackGi1/0/20err-disabledloopbackC3750X-5F-I02-2-252# It can be seen that the reason for the err-disable interface is loopback, because I changed the interface during this period, because the loop causes all the interfaces that have been replaced to be err-disable. See what causes the interfac

figure out why into the err-disabled state. There are a number of possible reasons. But I don't know which one. The following are some possible causes that Cisco provides by default:Gx-sw-2950-01#show errdisable DetectErrDisable Reason Detection Status----------------- ----------------UDLD EnabledBpduguard EnabledSecurity-violatio EnabledChannel-misconfig EnabledPsecure-violation EnabledDhcp-rate-limit EnabledUnicast-flood EnabledVmps EnabledPagp-fl

030101FF 30170603551d1104 10300E82 0c626569 6a69616f 33373530 2e301f06 03551d23 0418301680147b7a 802dae52 2c369c7b 53e2e827 86306934 e984301d 0603551D 0E041604147B7A80 2dae522c 369c7b53 e2e82786 306934E9 84300d06 092a8648 86f70d0101040500 03818100 9a64c55e 8fa1357d 42f2bab3 1d2e14a1 b80eeb47 327b9d7bE97F2DCA a418b0c6 fe48522a e2f69c86 0d4f25af 80559994 B8877962 adc3090b9cbe026c cab1212f acb00db9 d5585da5 d037a1b2 c1e468e4 0772BBCC dacffe4d33aedb37 24366ac2 ea7a55a9 dcbebdbe d53c4154 45a07d4f 84

snooping binding table. Ip arp inspection validate src-mac dst-mac ip detection valid client must meet the src-mac dst-mac ip no error Ip arp inspection log-buffer entries 1024 inspection log Size Ip arp inspection log-buffer logs 1024 interval 300 inspection log refresh time, interval is too small will occupy a lot of cpu time ! ! ! Errdisable recovery cause udld Errdisable recovery cause bpduguard Errdisable recovery cause security-violation Errdisable recovery cause channel-

The method used is to assign IP to the user by DHCP, and then limit the way that these users can only use dynamic IP, if it is changed to static IP mode can not connect to the network; that is, the DHCP snooping function is used. Example: Version 12.1 No service pad Service Timestamps Debug Uptime Service Timestamps Log uptime No service password-encryption Service Compress-config ! Hostname c4-2_4506 ! Enable Password xxxxxxx! Clock timezone GMT 8 IP Subnet-zero No IP domain-looku

network bandwidth is sufficient. To sum up some of the above reasons, if our computer is not poisoned in the case can be resolved as follows 1. Install a 360 security guard on the computer and use it to help us clean up the computer's cache, garbage and optimize the acceleration problem, this very simple oh. 2.win7 system, this operating system station resources are very large, you 4G of memory is not enough, suggest you switch to XP system, then may be you open the background software too m

How to remove the Tomcat server from the computer to boot automatically 1, right click My Computer to open Computer Management; 2, open "services and Applications"-"services", in the right to find "Tomcat" service, and automatically changed to manually, and then restart; 3, or press Win+r to open the operation, input misconfig, press ENTER, open system configuration; 4, switch to "start", will not need to automatically start