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A end user want to have a bandwidth guarantee with some special address.The route from the user to it's destination will through three routers.routerA-routerB-routerC.If I set a higher precedence on routerA by dhcp and have no qos setting on the other two routers,will the other two router see...

I want to build a relationship of a domain name and a ip address.When I trace some address,I can know where maybe the trouble happened for the ip address will followed by a domain name.what shall I do on the router to realize it?Thanks a lot.

I want some advise about network management tools used in a large network. Just like some network management software and some hardware used to help the network manager to know the states of each lines.Thanks a lot!

under the router(config)# mode,I want to know what the use of command "username *** password ***" .if I enabled ip http-server on the router,when I visit the router from the web,how can I set the username and password for the http-server.

when I config some specific privilege level with different mode,I found some conflicts happened,I think the reason is different level has it's own default command,and diffrent command has it's own security level.I want to know the specific content of every privilege level's default command.I'm...

I want to config a access-list with a name,so it's easy to remind me the use of the access-list.what shall I do to config a named access-list?

there are many employees in the department,all of them can change the configuration of the router after they enter the enable secret password. For more safe, I want give them different access level to config the router.what shall I do to solve the problem.

the new virus nachi uses 92 byte packet to detect other node.To block the virus Iconfig the router as follows: (config ter) access-list 199 permit icmp any any echo access-list 199 permit icmp any any echo-reply route-map nachi-worm permit 10 match ip address 199 match length 92 92 set...

one of my client's ip address was stolen to send spam,he's PC is not the mail server, I want to know how someone can steal his ip address to send spam and what I can do to help him.

with breaking out of the new virus,my network's packet stream growing heavly,many users'connecting rate turned slow, I want to know how to solve the problem

After I print show ip bgp,the bgp route will be shown .Before the network item,there is a "i" and at the end of the path item there is also a "i",i want to know what the meaning of the two "i"s and there differences

after I print show ip bgp,the bgp route will be shown .Before the network item,there is a "i" and at the end of the path item there is also a "i",i want to know what the meaning of the two "i"s and there differences.

I heared cisco will upgrade it's system to deal with some kind of attack.who knows about the attack,and what kind of tech it will use.

I have a router run eBGP,It links to two different ASs,the two lines have different rates.I sent broadcast to the two ASs through the two lines,and they send answer packets to me.Now I want all or most of the answer packets send back from the quick line,how should I config my in router?