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	<title>『无题』 &#187; Classical CASE</title>
	<atom:link href="http://www.zhaocs.info/category/classical-case/feed" rel="self" type="application/rss+xml" />
	<link>http://www.zhaocs.info</link>
	<description>I persist, therefore I am!!!</description>
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			<item>
		<title>关于“clear arp”的一些问题</title>
		<link>http://www.zhaocs.info/clear-arp-issue.html</link>
		<comments>http://www.zhaocs.info/clear-arp-issue.html#comments</comments>
		<pubDate>Sun, 11 Jul 2010 05:21:33 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[学习笔记]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=51546</guid>
		<description><![CDATA[当在汇聚交换机上“clear arp”会发现arp表项会自动update，而无法删除。已经确认汇聚层交换机与接入层交换机之间没有任何流量，感觉交换机会自动发送arp信息。
经确认，发现是问题与Adj表有... ]]></description>
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		<item>
		<title>Upgrade Rommon Version</title>
		<link>http://www.zhaocs.info/upgrade-rommon-version.html</link>
		<comments>http://www.zhaocs.info/upgrade-rommon-version.html#comments</comments>
		<pubDate>Fri, 09 Jul 2010 14:08:07 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[学习笔记]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=51519</guid>
		<description><![CDATA[前段时间处理了一个7609的CASE，故障主要是当76重启后，FlexWAN的配置没有正确加载。从现象看是由于配置在FlexWAN完全启动前加载，导致启动后，配置已经加载完毕。暂时可以用“copy start run”做... ]]></description>
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		<slash:comments>0</slash:comments>
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		<item>
		<title>FlexWan lost config and upgrade ROMMON for 65/76</title>
		<link>http://www.zhaocs.info/upgrade_rommon.html</link>
		<comments>http://www.zhaocs.info/upgrade_rommon.html#comments</comments>
		<pubDate>Thu, 10 Jun 2010 04:53:08 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[学习笔记]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=51476</guid>
		<description><![CDATA[问题：
由于最近遇到了一个故障，重启后FlexWan的配置会丢失。
观察到的现象感觉是配置先刷，板卡随后重启，这样导致没有配置。
“copy start run” 可以暂时解决这个问题。
经过确认后这是一... ]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>ICMP 重定向的一些问题</title>
		<link>http://www.zhaocs.info/icmp-redirect.html</link>
		<comments>http://www.zhaocs.info/icmp-redirect.html#comments</comments>
		<pubDate>Mon, 15 Feb 2010 08:44:26 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[学习笔记]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=51325</guid>
		<description><![CDATA[前端时间跟朋友遇到一个问题，一部分PC能上外网，另一部分不能上外网。
经检查，发现能上网的PC都是定制的windows xp，不能上网的都是定制的windows server。
而且在xp上ping外网测试，在route print... ]]></description>
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		<slash:comments>1</slash:comments>
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		<item>
		<title>3560 output drop affect voice vibrate</title>
		<link>http://www.zhaocs.info/3560-output-drop-voice-vibrate.html</link>
		<comments>http://www.zhaocs.info/3560-output-drop-voice-vibrate.html#comments</comments>
		<pubDate>Thu, 31 Dec 2009 23:16:46 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=50960</guid>
		<description><![CDATA[Refer to 3560 output drop increase issue.
All voice in one vlan 36.
And have some data vlan.
Follow are topology(summary):
&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-
 +-----------+            +-----------+
 &#124;   6509    &... ]]></description>
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		<item>
		<title>Static BFD Configuration Summary</title>
		<link>http://www.zhaocs.info/static-bfd-configuration.html</link>
		<comments>http://www.zhaocs.info/static-bfd-configuration.html#comments</comments>
		<pubDate>Tue, 22 Dec 2009 09:56:37 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[BFD]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=50916</guid>
		<description><![CDATA[由于最近处理一个静态BFD的问题。
在此贴出BFD的配置及相关的资源链接供大家参考。
关于相关BFD协议的内容和他的模式问题，本想用dynamips加12.2(33)SRC来做测试并抓包分析，但发现一配置BFD，... ]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>ISDN E1 PVDM2-xxDM callback</title>
		<link>http://www.zhaocs.info/isdn_pvdm2-xxdm_callback-2.html</link>
		<comments>http://www.zhaocs.info/isdn_pvdm2-xxdm_callback-2.html#comments</comments>
		<pubDate>Sat, 14 Nov 2009 15:00:58 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[ISDN]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/50248.html</guid>
		<description><![CDATA[Topology:
PC(modem)&#8212;&#8212;&#8212;-ISDN&#8212;&#8212;&#8212;(E1 Pri)2811(PVDM2)
Configuration:
network-clock-participate wic 0
network-clock-select 1 E1 0/0/0
!
isdn switch-type primary-net5
!
chat-script offhook1 "" "ATH1" OK \c
chat-script callba... ]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>ISDN PVDM2-xxDM Dialer</title>
		<link>http://www.zhaocs.info/isdn_pvdm2-xxdm.html</link>
		<comments>http://www.zhaocs.info/isdn_pvdm2-xxdm.html#comments</comments>
		<pubDate>Sat, 14 Nov 2009 13:38:22 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>
		<category><![CDATA[ISDN]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=50242</guid>
		<description><![CDATA[ISDN Dialer fail for PVDM2
From Show diag:
&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8211;
CISCO2821
HWIC-1CE1T1-PRI
PV... ]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>NTP Summarize</title>
		<link>http://www.zhaocs.info/ntp-summarize.html</link>
		<comments>http://www.zhaocs.info/ntp-summarize.html#comments</comments>
		<pubDate>Thu, 06 Aug 2009 19:41:53 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[CCIE SP]]></category>
		<category><![CDATA[Classical CASE]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=47651</guid>
		<description><![CDATA[As everyone knows, the NTP is sync clock protocol.
That knowledge less other protocol.
But there are some attention:
&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;
1. When you config more than one serve... ]]></description>
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		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>6000W Power ISSUE</title>
		<link>http://www.zhaocs.info/6000w-power-issue.html</link>
		<comments>http://www.zhaocs.info/6000w-power-issue.html#comments</comments>
		<pubDate>Wed, 05 Aug 2009 15:04:51 +0000</pubDate>
		<dc:creator>frank</dc:creator>
				<category><![CDATA[Classical CASE]]></category>

		<guid isPermaLink="false">http://www.zhaocs.info/?p=47615</guid>
		<description><![CDATA[问题：
Customer have two 2500W power, now customer want to replace the 6000W power.
Customer want to check whether impact the business when replace the 6000W.
解决：
If customer have power usage exceeds need the downtime, as some of the linecards w... ]]></description>
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