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文章 - huckly

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2641
Network 討論版 / 關於543
« 於: 2002-04-09 13:21 »
偶當然 不敢質疑你啦 這人我想起來這個話題(5-4-3 rule)似乎曾經在 network bbs版討論過
不過你丟的這個問題粉有趣what's is populated
 找了半天  網路上一堆文件只有說如何做(how) 沒有說 為何這樣做(why)
不過 我看到 這裡對 5-4-3 rule 的 explain 挺不錯的
http://e-comm.webopedia.com/TERM/5/5_4_3_rule.html
Ethernet and IEEE 802.3 implement a rule, known as the 5-4-3 rule, for the number of repeaters and segments on shared access Ethernet backbones in a tree topology. The 5- 4-3 rule divides the network into two types of physical segments: populated (user) segments, and unpopulated (link) segments. User segments have users' systems connected to them. Link segments are used to connect the network's repeaters together. The rule mandates that between any two nodes on the network, there can only be a maximum of five segments, connected through four repeaters, or concentrators, and only three of the five segments may contain user connections.
這裡把 5個 segment 分成 populated 跟 unpolulated , user 跟 link 我覺得這個解釋 應該會比較讓人懂吧 may be

The Ethernet protocol requires that a signal sent out over the LAN reach every part of the network within a specified length of time. The 5-4-3 rule ensures this. Each repeater that a signal goes through adds a small amount of time to the process, so the rule is designed to minimize transmission times of the signals.

The 5-4-3 rule -- which was created when Ethernet, 10Base5, and 10Base2 were the only types of Ethernet network available -- only applies to shared-access Ethernet backbones. A switched Ethernet network should be exempt from the 5-4-3 rule because each switch has a buffer to temporarily store data and all nodes can access a switched Ethernet LAN simultaneously.



2642
Linux 討論版 / 我是個Linux初學者
« 於: 2002-04-09 10:05 »
由於ftp://cle.linux.org.tw 不是常常穩定開放
所以 建議你去 各大學  FTP 下載
我就比較喜歡 去中山大學 更新快 速度穩定

2643
建議你把 apache 的 httpd.conf 相關設定 貼上來
這樣才知道問題點

2644
Network 討論版 / 關於543
« 於: 2002-04-08 18:18 »
網中人兄 你忘了hub 也就是 repeater
所以 應該不用試了 hub 要算在 543 裡面

2645
我記的我回你e-mail  
沒收到嗎  真沒收到 再跟我說吧

2646
Linux 討論版 / 在win xp 下安裝red hat linux 7.2
« 於: 2002-04-08 00:48 »
不知您的問題點
不過如果是 把兩套系統裝再 同一顆硬碟
那應該是 先裝 XP 在裝 linux

2647
Linux 討論版 / Mount Problem
« 於: 2002-04-08 00:44 »
呵呵  不是 unmount 是 umount 差一個字 差粉多喔

2648
Linux 討論版 / 我是個Linux初學者
« 於: 2002-04-08 00:41 »
您是想再 同一顆硬碟裝兩套linux 嗎 (RedHat & CLE 1.0) 嗎
還是 想把 RedHat 7.2 中文化 這兩種處理方式不同
所以解決方式也不同  不過應該 是不會再同一顆 硬碟 裝兩套 linux
除非你在測試  既然你是新手 我想 先裝 RedHat 7.2 試著中文化
您應該可以從中得到樂趣

2649
恩 如果失敗訊息如下
 The operation failed because:

The directory service failed to replicate off changes made locally.

The DSA operation is unable to proceed because of a DNS lookup failure.


  微軟有提到這部分的 解決方法 提供給您參考




Cannot Remove Active Directory from a Replica Domain Controller [Q263624]

PSS ID Number: Q263624
Article last modified on 07-30-2001

WINDOWS:2000

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Windows 2000 Advanced Server
- Microsoft Windows 2000 Server
-------------------------------------------------------------------------------

SYMPTOMS
========

When you attempt to promote a replica domain controller by using the Dcpromo.exe
tool, you may receive the following error message:

The operation failed because:

The directory service failed to replicate off changes made locally.

The DSA operation is unable to proceed because of a DNS lookup failure.

NOTE: The domain controller is configured to use a Windows 2000-based Domain Name
System (DNS) server that is located in the internal network as a preferred DNS
server.

CAUSE
=====

This issue can occur if the DNS server address in the TCP/IP settings on the
domain controller that is hosting the DNS zone is not set correctly.

RESOLUTION
==========

To resolve this issue:

1. Click Start, point to Settings, click Control Panel, double-click "Network
and Dial-up Connections", right-click the appropriate local area connection,
and then click Properties.

2. In the "Components checked are used by this connection" dialog box,
double-click Internet Protocol (TCP/IP).

3. Under "Use the following DNS server addresses", verify that the "Preferred
DNS server" setting is configured with the TCP/IP address of this computer,
or the TCP/IP address of a DNS server that supports SRV records (and
preferably dynamic updates).

NOTE: If you are using a DNS server that is provided by your Internet service
provider (ISP), use the DNS Manager snap-in to configure DNS forwarders.

STATUS
======

This behavior is by design.

MORE INFORMATION
================

For additional information about how to configure DNS for Active Directory,
click the article numbers below to view the articles in the Microsoft Knowledge
Base:

Q237675 Setting Up the Domain Name System for Active Directory

Q260371 Troubleshooting Common Active Directory Issues in Windows 2000

Additional query words:

======================================================================
Keywords : kberrmsg kbnetwork w2000dcpromo kbDCPromo
Technology : kbwin2000AdvServ kbwin2000AdvServSearch kbwin2000Serv kbwin2000ServSearch kbwin2000Search kbWinAdvServSearch
Version : WINDOWS:2000
Issue type : kbprb
=============================================================================
Copyright Microsoft Corporation 2001.

2650
Windows 討論版 / 開機畫面問題
« 於: 2002-04-06 00:37 »
vserver.vxd 這應該是某個驅動程式
他可能損毀 或是 遺失
先 找到別台電腦 有這個檔案 copy 過來
試試看吧

2651
先 修復 AD 資料庫 也需ad 資料庫本身 已經有問題了
第一台正常了 再做Replication

Troubleshooting Replication

This lesson describes problems you may encounter that relate to replication. Most problems that can be remedied with Active Directory Sites and Services involve poor directory information. This can mean that

  • New directory information is not distributed in a timely fashion

  • Service requests are not handled in a timely fashion

This lesson also describes how to check replication topology.

After this lesson, you will be able to
  • Troubleshoot replication

Troubleshooting Replication

Ineffective replication can result in declining Active Directory performance, such as new users not being recognized. Ineffective replication or request handling primarily results in out-of-date directory information or unavailable domain
controllers. Each problem (cause) has one or more possible solutions. Replication troubleshooting scenarios are discussed in Table 6.1.

Table 6.1  Replication Troubleshooting Scenarios
Symptom: Replication of directory information has stopped
CauseSolution
The sites containing the clients and domain controllers are not connected by site links to domain controllers in other sites in the network. This results in a failure to exchange directory information between sites.Create a site link from the current site to a site that is connected to the rest of the sites in the network.
Symptom: Replication has slowed but not stopped
CauseSolution
Although all sites are connected by site links, your inter-site replication structure is not as complete as it might be. Directory information is replicated to all domain controllers if they are all connected by site links, but this is not optimal. If there are site links but no site link bridges, changes made to domain controllers may take an unacceptably long time to be distributed to other domain controllers that are not closely linked.Make sure Active Directory has been configured properly. To span the multiple site links that need more efficient replication, consider creating a site link bridge or consider bridging all site links.
Symptom: Replication has slowed but not stopped
CauseSolution
The current network resources are insufficient to handle the amount of replication traffic. This can affect services unrelated to Active Directory, because the exchange of directory information is consuming an inordinate amount of network resources.Increase the proportion of available network resources relative to directory traffic. Decrease the frequency of the replication schedule. Configure site link costs. To achieve network connections with more bandwidth, create site links or site link bridges.
Directory information changed at domain controllers in one site is not being updated in domain controllers in other sites in a timely fashion because inter-site replication is scheduled too infrequently.Increase the frequency of replication. If the replication is occurring over a site link bridge, check which site link is restricting replication. Increase the time range during which replication can occur or the frequency of replication can occur or the frequency of replication within the time frame for that site link.
Clients are having to request authentication, information, and services from a domain controller with a low-bandwidth connection. This may result in clients receiving a slow response for authentication, directory information, or other services.Check if there is a site that will better serve the client's subnet. If a client who is experiencing poor service is isolated from domain controllers, consider creating another site with its own domain controller that will include the client. Install a connection with more bandwidth.

Checking Replication Topology

Active Directory runs a process that considers the cost of inter-site connections, checks if any previously available domain controllers are no longer available, checks if new domain controllers have been added, and then uses this information to add or remove connection objects to create an efficient replication topology. This process does not affect manually created connection objects.

To check the replication topology
  1. Click Start, point to Programs, point to Administrative Tools, then click
    Active Directory Sites And Services.
  2. In the AD Sites and Services console tree, double-click the server that you want to use to check replication topology.
  3. Right-click NTDS Settings, point to All Tasks, and then click Check
    Replication Topology.

Lesson Summary



[ 這篇文章被編輯過:  huckly 在 2002-04-03 15:16 ]

2652
這樣好了 喔用中文來解釋
選 檔案(資料夾)/內容/安全/進階/擁有者
中間 變更擁有者 選一人 然後按 確定 或是 套用
這樣就好了

2653
Windows 討論版 / 現在該不該去補MCSE 2000
« 於: 2002-04-03 14:12 »
現在 MCSE 會著名版本 所以不會有過期問題
而 ner server 算是 2000 延伸版本 不像 nt 4.0 跟 2000 差異這麼大
目前 xp 跟 2000 考試科目並存
http://www.microsoft.com/traincert/mcp/mcse/requirements.asp
對於教育中心 就補習班啦
老師其時地位比較重要 ,繳了這麼多錢 可是剛好碰到一個不太會交的老師
會很嘔 打聽好老師 再去選擇哪一家
我個人經驗  上 MCSE 不只是為了認證
而是 要了解 2000 或 XP 的 弁鉊翽犑@
不然 念念 題庫 也可以考上喔
台灣的MCSE 就是這樣 被考濫的

2654
Network 討論版 / 請問有關 SAMBA 的問題 ~
« 於: 2002-03-28 11:59 »
恩 我自己找到答案了
應為我在 smb.conf 設了這一行
ssl ca certfile = /usr/share/ssl/certs/ca-bundle.crt
mark 起來就好了

2655
Network 討論版 / 請問有關 SAMBA 的問題 ~
« 於: 2002-03-27 17:52 »
我也是用  mount -t smbfs -o username=??,password=?? //Win2K/ShareName /mnt/samba
可是會出現
Unknown parameter encountered: "ssl ca certfile"
Ignoring unknown parameter "ssl ca certfile"
窩勒 還要符合 SSL CA
我少了哪個參數呢
我用 smbclient //Win2K/ShareName
會出現要求密碼  輸入後 就正常
可是 mount 就不行  怪怪

2656
Linux 討論版 / 如何安裝 opera5.0?
« 於: 2002-03-26 18:21 »
網中人兄說的對 , 如果看到不懂  我會先看有沒有時間 , 有就幫忙去找答案
沒有時間只好說 閉嘴不發言, 不過 我想大家釵h 經驗 都是 自我實驗 而來的  是吧
我自己的 經驗  在 linux 中用 opera 6.0 會有亂碼  所以 後來又改回 mozilla
聽說 6.01 有改善  聽說啦
不成

就等下一版吧

2657
Windows 討論版 / 請問網芳如何跨router??
« 於: 2002-03-26 18:09 »
1. 架 WINS
2. lmhosts
3. 如果是 cisco router 可以 做到 直接 幫你 去 access router 另外一邊 的 wins
相關網頁
http://support.microsoft.com/default.aspx?scid=kb;EN-US;q150800
http://www.cisco.com/warp/public/473/Netbios.html


[ 這篇文章被編輯過:  huckly 在 2002-03-26 18:09 ]

2658
Linux 討論版 / 為什麼我的Linux不能上網!!!
« 於: 2002-03-24 01:25 »
有沒有可能 DNS 沒設說

2659
Windows 討論版 / windows 2000備份的問題
« 於: 2002-03-22 11:51 »
先看 application 來說
windows 2000 backup 軟體 其實 就是 veritas 精簡版
原則上支援網路備份非常陽春, 可能不完全
建議你把 訊息post 上來 大家 研究看看
最好是升級 成 ARCserver或是 veritas  完整版

另外 也有可能你的網路品質如何
這也影響備份成效


2660
Network 討論版 / 阻擋網路音樂
« 於: 2002-03-22 11:38 »
給您參考一下
Windows Media
The Windows Media Server streams content over the web. This was formerly known as "NetShow" and uses the .asf file extension.
80
Can stream content over HTTP.
1755
Uses a TCP control connection on this port, as well as some UDP traffic.
7007
Encoder-to-server traffic. This allows an encoder (such as a system encoding live radio) to stream content to the server, which then streams it out to clients.
Note that the UDP traffic may be carried over IP multicast.

2661
恩WIN2000 網卡修改 ip 或 gateway 或是其他 不需要 reboot
除非你 更換驅動程式

2662
Network 討論版 / 請問如何建立internet 硬碟?
« 於: 2002-03-20 11:36 »
我怕我講的不清不處
所以 本站兩篇文章給你參考
http://www.study-area.net/tips/browsing.htm
http://www.study-area.net/linux/servers/linux_samba.htm
不過我有錯誤的地方 就是 samba 應該走的事 netbios over tcp/ip
SO 要透過 wins 或是 lmhosts 來解決 wan的問題

我還沒找到 linunx 是否有 netbuis over tcp/ip
找到 在跟大家分享

我現在是很好奇 linux 對 routing potocol 的 應用
剛剛看了 win2000 可以 支援 ospf 跟rip


2663
也對  我們不是白老鼠 要的 只是好用的工具
等正式版吧

2664
Linux 討論版 / ADSL 的反解
« 於: 2002-03-20 10:51 »
請問  跟seednet 要跟哪單位申請反解
我查遍網頁都沒看到說
結果出去 fqdn 都 怪怪的

2665
Network 討論版 / 請問如何建立internet 硬碟?
« 於: 2002-03-20 09:41 »
samba 是 模擬 NETBEUI 這個通訊協定是 通不過 router 或是說 router 不認識他
但是可以透過 WINS 來解決這個問題

2666
所以說了半天 原來是 劍客 兄無法進管理區
就我就無能為力 因為 小弟 只有 當初自己把自己 加入
Study Area 站長群秘密討論區 時 用 vbird 給的 study-area 帳 號
用完就忘  真是對不起 Study-Area 仁兄 (OR 虛擬姊姊)
vbird 兄 phpbb 2.0 版 挺不錯的喔 還有 隱藏 討論區 喔
http://www.v-dark.net/phpbb
可以玩玩看  不過我覺得現在就很好用 不一定要改說

2667
Network 討論版 / Q: 網路卡 接通
« 於: 2002-03-18 17:47 »
我會用一個笨方法
開三個 console 分去ping lookback
不知是不是好方法

2668
上篇是我
每次都忘記 登入

2669
謝謝 網中人兄 提醒
我常常 捉不到重說
每個討論區的管理人員  或是稱為版主
可以針對他的 討論區  討論主題 做 幾個 動作
討論主題下方有 三個圖形
鎖 代表 執行 鎖定主題動作  也就是說 本主題 不能再張貼發言
右彎 箭頭 代表 移動, 你可以 移動此主題到別的討論區
x 代表 刪除  也就是把 次主題 刪除
不知 劍客 是否問的是這些

2670
phpbb 版面管理粉簡單
如果 你對英文有障礙的話
可以跟vbird 兄 要中文化程式
中文化後 會更一目了然
管理區 原則上分成 幾個重要項目
討論群組 新增 編輯 刪除
討論群組 內 討論區 的新增編輯 刪除
各討論區 的 權限設定
以及對會員的管理
如有疑問 我們在針對單項討論之

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