دستورات IP CEF و [size=2]ASYNC mode intractive معنیشون چیه و به چه دردی میخورن؟[/size]
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دستورات IP CEF و [size=2]ASYNC mode intractive معنیشون چیه و به چه دردی میخورن؟[/size]
[ltr][LEFT][B]CEF (Cisco Express Forwarding)[/B]
Most high-end Cisco routers on the Internet run either CEF or dCEF. This is because of the large performance gains to be realized with CEF, which stands for Cisco Express Forwarding. CEF has many benefits over fast switching, including a more reliable and sturdy method for building the forwarding table. CEF also offers some security benefits, such as RPF (Reverse Path Forwarding). RPF provides a means of blocking packets that claim to originate from within your network, but present themselves on an external interface. Keep in mind that CEF can be a bit tricky to configure in an environment that has asymmetric data flows. CEF is, therefore, a wise choice for reasons of performance and security. CEF is enabled on a global basis with the command ip cef. To enable dCEF (Distributed CEF), the global command is ip cef distributed.
Cisco White Paper: [url]http://www.cisco.com/warp/public/cc/pd/iosw/iore/tech/cef_wp.htm[/url]
[B]async mode interactive[/B]
To return a line that has been placed into dedicated asynchronous network mode to interactive mode, thereby enabling the slip and ppp EXEC commands, use the async mode interactive interface configuration command. To prevent users from implementing SLIP and PPP at the EXEC level, use the no form of this command.
async mode interactive
no async mode interactive
Cisco Documentation: [url]http://www.cisco.com/univercd/cc/td/doc/product/software/ios113ed/cs/csprtd/csprtd2/csasppp.htm#xtocid11862[/url][/LEFT][/ltr]
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