Keeping Topology Drawings Clean By stretch | Wednesday, April 13, 2011 at 1:00 a.m. UTC People often try to cram too much information onto a network topology drawing, which results in cluttered
Understanding OSPF External Route Path Selection by Brian McGahan, CCIE #8593 Hi Brian, What is the major difference in using an E1 route over an E2 route in OSPF? F
原帖地址：http://www.networking-forum.com/viewtopic.php?f=24&t=3203 I originally posted this over in the IP Communications forum. However, I think it has value here as well, so I'm going to repo
Symmetric Encryption, Asymmetric Encryption, and Hashing By stretch | Tuesday, November 23, 2010 at 4:16 p.m. UTC A fundamental topic of IT security that often gives people dif
Inter-VRF Routing with VRF Lite By stretch | Monday, March 29, 2010 at 4:29 a.m. UTC In Intro to VRF lite, we looked at how virtual routing and forwarding (VRF) instances
Recovering a Router with the Password Recovery Service Disabled By stretch | Monday, October 11, 2010 at 1:43 a.m. UTC Password recovery is a process used to restore to wo
Routed or Switched Access Layer: Why not Both? By stretch | Friday, September 24, 2010 at 3:32 a.m. UTC A major consideration when designing an enterprise network is whether tr
Route Preference By stretch | Monday, August 16, 2010 at 3:04 a.m. UTC Suppose a router receives a packet destined for the IP address 192.0.2.73. The router has in its routing
IPv6 Network Address Translation By stretch | Monday, July 19, 2010 at 1:12 a.m. UTC RFC 5902 was published last week by the Internet Architecture Board (IAB) to
Understanding TCP Sequence and Acknowledgment Numbers By stretch | Monday, June 7, 2010 at 2:15 a.m. UTC If you're reading this, odds are that you're already familiar with TCP'
IOS Console Customization By stretch | Monday, May 10, 2010 at 3:07 a.m. UTC This article offers a few tips to customize the behavior of a Cisco IOS router's VTY and console li
IPv6 Pros and Cons By stretch | Monday, April 12, 2010 at 1:59 a.m. UTC A reader, Phil, suggested an introductory IPv6 article for those who don't yet have much exper
Using 6to4 for IPv6 at Home By stretch | Wednesday, March 17, 2010 at 4:22 a.m. UTC Earlier this week, we looked at using 6to4 tunnels to establish IPv6 connectivity
The Science of Network Troubleshooting By stretch | Wednesday, March 10, 2010 at 4:19 a.m. UTC A number of people have written asking me what happened to a paper I wrote back i
Understanding IP prefix lists By stretch | Monday, February 1, 2010 at 4:38 a.m. UTC IOS prefix lists work like access lists for route advertisements (prefixes). Whil
Understanding NAT address types By stretch | Thursday, January 7, 2010 at 2:11 a.m. UTC My first networking job was as an airman in the US Air Force. Having been deepy inv
Backup Site-to-Site Tunnel In order to specify the connection type for the Backup Site-to-Site feature for this crypto map entry, use the crypto map set connection-type command in global config
来自合作方一个CCIE(CCIE号1万刚出头)的邮件，很有实用价值，短短一个邮件说明了如何使用traffic shaping and policing。麻烦不要转载，涉及公司。 思科传送门 ==================================================================================== Our standard way
在实施中要注意在Cisco端的aaa配置，特别注意，老版本Radius可以用aaa authorization exec default local，而新的windows NPS需要使用aaa autorization exec default group radius [if-authenticated] local. 在ASA上，出于安全，只是用aaa authentication ssh/
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