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how can i use access-list with mac address. i have LAN for one building. when ever i block ip address because of high traffic he simply changing the ip address then using again. so i want to block his mac address with access-list i did this but still not working access-list 701 deny <mac...

when ever i use -- sh ip dhcp binding -- command all my mac address list got 14 numbers like this.... 0100.1558.d276.5b. usually mac address is with 12 numbers, what do you mean by 14 digits

I have two cisco 877 routers and Im using the same below configuration on both routers but one of the router's NVI0 interface is up and working but the other router NVI0 interface is administratively down. whats wrong?? both routers are same model 877 and configuration im using same. what is...

i want to block utorrent and bitcomet ports on cisco router. i search on google and i got default ports 6881 - 6999. i did blocked these ports but still the programs are working. i check the ports they are using ports like 4800.... please show me the procedure to block these softwares.

im getting nvi0 interface with assigned ip address tht i assigned to vlan1, i want to disable nvi0 but i cant login... can you please explain me what is the purpose of this interface and why im getting vlan1 ip there. thank you. NAS-Gents#sh ip interface brief Interface...

IS THERE ANY ISSUE IN THIS CONFIGURATION FOR LOAD BALANCE?? I HAVE ISSUE WITH THE VOIP SERVICES. Current configuration : 4113 bytes ! ! No configuration change since last restart ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec service...

its a strange issue. i have 6MB bandwidth on three SHDSL wic cards, each can handle 2mbps on load balance. everything is perfectly working fine except calling cards. i mean to say that calling over voip softwares. examples-jumblo,net2phone,phoneserve.... when bandwith is below 2mb even this...

hi give me the steps that how to block a specific ip address and also a mac address. give me some details about access-list. thanks you.

I have ADSL connection on cisco router on a remote location.but the problem is everytime i restart router dialer change ip. That make me hard to telnet/monitor the router. i contact the service provider they said its DHCP at their end. Is there any way not to release the dialer IP?

i erased IOS on my router cisco soho 77, router booting in rommon mode. i have backup of IOS in tftp folder. please give me the detail steps how to retrieve IOS on to cisco router soho 77. Thank you

I backup startup config and earsed on router. Then i restart and copy the configuration but the problem is i cant enable the atm interface. i did goto global configurationa and then i enter into interface and i type NO SHUT but still i when i use command "ip interface brief" still its...