日本免费全黄少妇一区二区三区-高清无码一区二区三区四区-欧美中文字幕日韩在线观看-国产福利诱惑在线网站-国产中文字幕一区在线-亚洲欧美精品日韩一区-久久国产精品国产精品国产-国产精久久久久久一区二区三区-欧美亚洲国产精品久久久久

  1. 首頁 > 云知道 > >

iproute0.0.0.00.0.0.0和ipdefult-network區(qū)別

云知道


哪位能說說ip route 0.0.0.0 0.0.0.0和ip default-network命令的區(qū)別嗎？
我所知道的ip route 命令會(huì)向路由表里加一條靜態(tài)路由，ip default-network命令不會(huì)
ip route 命令按接口和地址指定缺省路由ip default-network命令按網(wǎng)絡(luò)指定
誰能說說還有什么區(qū)別？以及在什么情況下使用哪條嗎？還有他們?cè)谠侔l(fā)布時(shí)的區(qū)別！
FW:發(fā)信人: canway()
整理人: sanjose(2000-09-26 10:54:44), 站內(nèi)信件
Q:
聽了各位解釋，有些明白，可是路由器沒有路由還叫路由器嗎，那樣兩個(gè)命令
功能似乎是一樣的，都是把不知道到的包發(fā)給下一個(gè)站點(diǎn)，可是我在做一個(gè)項(xiàng)目
時(shí)，
設(shè)置ip default-gateway就不行 。用ip route 0.0.0.0 0.0.0.0 xxxxxxxx
就通了 。是不是這樣，對(duì)于ip default-gateway來說，只有對(duì)這個(gè)網(wǎng)段才有效，
而從其他
網(wǎng)段路由過來的其他網(wǎng)段的信息到了用ip default-gateway的網(wǎng)段就不能利用這
個(gè) 命令傳送，而是要用ip route 0.0.0.0 0.0.0.0.了 。也就是ip route 0.0.0
.0
0.0.0.0才能完成路由功能，不知道理解的對(duì)嗎
Answer:
1 。ip default-gateway用與路由器不作路由時(shí)使用，這時(shí)路由器就只是一臺(tái)主
機(jī)好象Win95PC一樣需要配一個(gè)網(wǎng)關(guān)才能與外界通信 。
假如 “no ip routing"則路由器就不作路由 。這時(shí)你可以配bridge-group，把路
由表及里器當(dāng)switch使 。
2 。ip route 0.0.0.0 0.0.0.0 用于履行路由功能 。假如ip routin
g是enable的則ip default-gateway不起作用.
FW:區(qū)別在于，ip route本機(jī)生效，ip default-network可以影響整個(gè)路由協(xié)議域
http://www.cisco.com/en/US/customer...sHtml#ipnetwork
FW:IntrodUCtion
This Tech Note eXPlains how to configure a default route, or gateway of last resort, using the following IP commands: ip default-gateway, ip default-network, and ip route 0.0.0.0 0.0.0.0. Let"s look at each of these commands in more detail.
Before You Begin
Conventions
For more information on document conventions, see the Cisco Technical Tips Conventions.
Prerequisites
There are no specific prerequisites for this document.
Components Used
This document is not restricted to specific software and hardware versions.
The information presented in this document was created from devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If you are working in a live network, ensure that you understand the potential impact of any command before using it.
ip default-gateway
The ip default-gateway command differs from the other two commands in that it should only be used when ip routing is disabled on the Cisco router.
For instance, if the router is a host in the IP world, you can use this command to define a default gateway for it. You might also use this command when your low end Cisco router is in boot mode in order to TFTP a Cisco IOS?Software image to the router. In boot mode, the router doesn"t have ip routing enabled.
ip default-network
Unlike the ip default-gateway command, you can use ip default-network when ip routing is enabled on the Cisco router. When you configure ip default-network the router considers routes to that network for installation as the gateway of last resort on the router.
For every network configured with ip default-network, if a router has a route to that network, that route is flagged as a candidate default route. Let"s look at the following routing table taken from a Cisco router:
2513#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default

推薦閱讀