yeyefox000的博客_ccie

L2L ×××实现 hub-spoken 互联方式

L2L VPN实现 hub-spoken 互联方式作者：Cedric CCIE#25467 网络拓扑结构如上今天我们讲述如何实现HUB-SPOKEN结构的L2L访问 R1为HUB端 R2，R3为SPOKEN端。 R1#sh run Building configuration... &

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VPN

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L2L

hub-spoken

原创 2011-01-18 13:44:48 893 阅读 1点赞

【转】A Sneak Peek at the CCIE R/S Lab

The recently announced changes to the CCIE R/S written and lab exams took effect this week. I recently had the chance to take the R/S lab again, as part of the Beta testing - so I decided to save up

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ccie(rs)

转载 2009-10-22 17:07:36 718 阅读

ip pim register-rate-limit

To set a limit on the maximum number of Protocol Independent Multicast sparse mode (PIM-SM) register messages sent per second for each (S, G) routing entry, use the ip pim register-rate-limit comm

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multicast

转载 2009-08-18 08:50:37 927 阅读

JEFF关于OSPF水平分割的回信

Hi! Split horizon is used on distance vector algorithms (rip, eigrp), to prevent a route from being advertised back out an interface in which it was received. OSPF is not a distance vector

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OSPF

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转载 2009-08-12 00:13:04 1186 阅读

GLBP

The Gateway Load Balancing Protocol (GLBP) is a Cisco-proprietary protocol designed to overcome the limitations of existing redundant router protocols. Some of the concepts are the same as with HSR

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glbp

转载 2009-08-08 01:02:55 674 阅读

HSRP VRRP GLBP

IP hosts can use several methods of deciding which default router or default gateway to use—DHCP, BOOTP, ICMP Router Discovery Protocol (IRDP), manual configuration, or even by running a routing pr

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redundancy

转载 2009-08-08 00:59:11 827 阅读

WRED

Congestion-avoidance mechanisms, such as Weighted Random Early Detection (WRED), are complementary to (and dependent on) queuing algorithms. Queuing/scheduling algorithms manage the front of a queu

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wred

转载 2009-08-08 00:55:40 875 阅读

Ospf 不同进程下建邻居问题分析

Ospf 不同进程下建邻居问题分析众所周知，OSPF进程号仅在本地有效，即不同OSPF进程号只要公告了同一网段，就能建邻居，交换路由更新。我们要分析一下同一路由器下如果同时有2个不同的OSPF进程，是否都能与对方建邻居。预配： R1上有loopback口10 地址：10.1.1.0/24。E0口地址为1.1.1.1/24 R2上有2个lo

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ospf

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不同进程建邻居

原创 2009-07-30 02:53:29 8039 阅读 1评论

cisco官网10个lab tips

TEN TIPS FOR TAKING THE LAB EXAM Read the entire exam first and check for addressing issues. Do not skip any details or sections.Manage your time. Make a plan to cover all the sections in t

cisco

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休闲

转载 2009-07-21 02:07:53 423 阅读 1评论

ip subnet-zero

ip subnet-zero To enable the use of subnet zero for interface addresses and routing updates, use the ip subnet-zero global configuration command. To restore the default, use the no form of thi

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document

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转载 2009-07-21 01:59:42 436 阅读

ip helper-address

ip helper-address To have the Cisco IOS software forward User Datagram Protocol (UDP) broadcasts, including BOOTP, received on an interface, use the ip helper-address interface configuration

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document

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转载 2009-07-21 01:54:07 1161 阅读

ip forward-protocol

ip forward-protocol To specify which protocols and ports the router forwards when forwarding broadcast packets, use the ip forward-protocol global configuration command. To remove a protocol

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document

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转载 2009-07-21 01:52:21 5960 阅读

ip unnumbered

ip unnumbered To enable IP processing on a serial interface without assigning an explicit IP address to the interface, use the ip unnumbered interface configuration command. To disable the IP

ip

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unnumbered

转载 2009-07-21 01:48:22 647 阅读

IP SLAs—Analyzing IP Service Levels Using the TCP Connect Operation

IP SLAs—Analyzing IP Service Levels Using the TCP Connect Operation First Published: May 2, 2005 Last Updated: August 29, 2006 This module describes how to use the Cisco IOS IP Serv

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sla

转载精选 2009-07-21 00:44:06 713 阅读

组播中如何把广播流量转为组播流量

ip multicast helper-map To allow IP multicast routing in a multicast-capable internetwork between two broadcast-only internetworks, use the ip multicast helper-map command in interface configurat

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组播

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广播

转载 2009-07-19 14:30:35 481 阅读

ACL控制icmp数据包问题分析（ACL挂法IN,OUT分析）

ACL控制icmp数据包问题分析（ACL挂法IN,OUT分析）需求：A、B、C直连 A,C分别写默认路由指出口需要在B上E0口IN方向写ACL101，使得A能PING通C，C不能PING通A 初始步骤：如图搭拓扑，A上写默认路由指E0口，C上写默认路由指E1口现分析ACL的写法：写法一： Access-l

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ACL

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原创 2009-07-17 19:51:59 3009 阅读 1评论

RIPV2通过三层交换机——跳数分析

初始步骤： 1.路由器A、B通过以太网线连到交换机分别划到相应的VLAN 三层交换机开启路由功能 2.A,B三层SW上分别起LOOPBACK口 1.1.1.1、2.2.2.2、3.3.3.3 3.交换机起SVI接口 4.3台设备分别公告直连网段进RIP （版本2，关闭自动汇总） Router B上看路由表：

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RIPv2

跳数分析

原创 2009-07-16 22:27:17 1126 阅读

STP的一些名词、参数以及选举过程分析

STP的一些名词、参数以及选举过程分析 STP（802.1d） BID（bridge ID）=priority(2byte)+MACaddress(6byte)，范围0~65535 Cisco默认32768 Bpdu（bridge protocol data unit

cisco

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STP

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原创 2009-07-13 22:03:45 842 阅读

CCNA实验分析 NAT和路由查询过程

需求： 1. R1模拟PC机（关闭ip routing） 2. 拓扑中仅使用2次静态路由

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nat

ccna

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路由查询

原创 2009-07-10 21:42:36 942 阅读 2评论

OSPF虚链路HELLO INTERVAL

命令：area transit-area-id virtual-link router-idarea transit-area-id virtual-link router-id transmit-delay 1-8192area transit-area-id virtual-link router-id retransmit-interval 1-8192area transit-area-i

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ospf

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virtual-link

原创 2009-05-26 10:48:56 1586 阅读

vtp相同domain域、全client模式改domain name

全互联的3台交换机，先做好TRUNK ，DOT1Q封装。在这里就命名3台交换机为SW1,SW2,SW3。sw1上先建数个VLAN (vlan 10;vlan 20;vlan 30)然后将3台交换机上的domain name都改为cisco，这时候3台都是server。此时3台sw上都有了之前sw1上的vlan信息了，依次将3台sw都改为client模式一定要注意先后顺序然后分别检查3台上的vla

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vtp

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原创 2009-05-25 23:28:56 1625 阅读 1评论

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L2L ×××实现 hub-spoken 互联方式

【转】A Sneak Peek at the CCIE R/S Lab

ip pim register-rate-limit

JEFF关于OSPF水平分割的回信

GLBP

HSRP VRRP GLBP

WRED

Ospf 不同进程下建邻居问题分析

cisco官网10个lab tips

ip subnet-zero

ip helper-address

ip forward-protocol

ip unnumbered

IP SLAs—Analyzing IP Service Levels Using the TCP Connect Operation

组播中如何把广播流量转为组播流量

ACL控制icmp数据包问题分析（ACL挂法IN,OUT分析）

RIPV2通过三层交换机——跳数分析

STP的一些名词、参数以及选举过程分析

CCNA实验分析 NAT和路由查询过程

OSPF虚链路HELLO INTERVAL

vtp相同domain域、全client模式改domain name

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