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Cisco Press CCNP SWITCH 642-813 Cert Kit DVD | ISO | 2.4 GB

CCNP SWITCH 642-813 Cert Kit is a best of breed late-stage preparation package that combines three self-study tools into one value-priced package. This product provides you with over 6 hours of personal instruction from Sr. instructor Dave Hucaby on the LAN Switching Video Mentor, a concise review of CCNP SWITCH exam topics in the CCNP SWITCH Quick Reference, and 300 exam review questions in both desktop and mobile formats in the CCNP SWITCH Cert Flash Cards Online.
LAN Switching Video Mentor is a DVD video product. The DVD contains a series of short instructional videos that demonstrate how to accomplish some of the most common configuration and troubleshooting tasks on the Catalyst platforms and how to verify that the network is working correctly. The DVD contains 20 individual videos for a total of about six hours of instruction. CCNP SWITCH Quick Reference provides you with detailed, graphical-based information, highlighting only the key topics on the CCNP SWITCH exam in cram-style format. This fact-filled Quick Reference allows you to get all-important information at a glance, helping focus on areas of weakness and enhance memory retention of important concepts.

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Cisco Press CCNP SWITCH 642-813 Cert Kit DVD | ISO | 2.4 GB

CCNP SWITCH 642-813 Cert Kit is a best of breed late-stage preparation package that combines three self-study tools into one value-priced package. This product provides you with over 6 hours of personal instruction from Sr. instructor Dave Hucaby on the LAN Switching Video Mentor, a concise review of CCNP SWITCH exam topics in the CCNP SWITCH Quick Reference, and 300 exam review questions in both desktop and mobile formats in the CCNP SWITCH Cert Flash Cards Online.
LAN Switching Video Mentor is a DVD video product. The DVD contains a series of short instructional videos that demonstrate how to accomplish some of the most common configuration and troubleshooting tasks on the Catalyst platforms and how to verify that the network is working correctly. The DVD contains 20 individual videos for a total of about six hours of instruction. CCNP SWITCH Quick Reference provides you with detailed, graphical-based information, highlighting only the key topics on the CCNP SWITCH exam in cram-style format. This fact-filled Quick Reference allows you to get all-important information at a glance, helping focus on areas of weakness and enhance memory retention of important concepts.

Cisco CCNP Pack 2010 | DVD + ebook | ISO/PDF | 1.7GB
Genre : eLearning

Material: Lab Guides, Quick Reference,Offical Cert Guide and Video’s
Details :
Cisco Network Troubleshooting Video Mentor DVD
Cisco Press CCNP ROUTE 642-902 Cert Kit DVD
Cisco Press CCNP SWITCH 642-813 Cert Kit DVD
Route + Switch + TShoot ebooks
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新版 CCNP 学习用书 CCNP ROUTE 642-902

新版 CCNP 学习用书 CCNP SWITCH 642-813

新版 CCNP 学习用书 CCNP TSHOOT 642-832

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近期在实施一工程。期中使用了一台S7510E与几台Cisco 3550的光口做端口聚合。聚合做好后。有时出现整个片区断网的情况。查端口状态为err-disable。有时手工的在3550端将端口shutdown再no shutdown后。正常。

经查这种情况可能有6种情况引起。

1、聚合协议不匹配

2、双工不匹配、

3、BPDU

4、UDLD (cisco 私有协议）

5、链路抖动

6、Keeplive loopback。

经分析。在这儿聚合协议不匹配与双工不匹配首先排除。因为查看两端均为1G、双工。再从日志上有CNTR-3-LOOP_BACK_DETECTED: Keepalive packet loop-back detected on GigabitEthernet0/2..

解决方法：停用现3550上面的Loopback。再做观察。目前为止末发现异常。不过还需要继续观察。

随附资料:

交换机出现err-disable的原因及解决方法

导致交换机接口出现err-disable的几个常见原因：
引用
1. EtherChannel misconfiguration
2. Duplex mismatch
3. UDLD
4. Link-flap error
5. Loopback error
6. Port security violation
第一个当F EC两端配置不匹配的时候就会出现err-disable。假设Switch A把FEC模式配置为on，这时Switch A是不会发送PAgP包和相连的Switch B去协商FEC的，它假设Switch B已经配置好FEC了。但实事上Swtich B并没有配置FEC，当Switch B的这个状态超过1分钟后，Switch A的STP就认为有环路出现，因此也就出现了err-disable。解决办法就是把FEC的模式配置为channel-group 1 mode desirable non-silent这个意思是只有当双方的FEC协商成功后才建立channel，否则接口还处于正常状态。
第二个原因就是双工不匹配。一端配置为half-duplex后，他会检测对端是否在传输数据，只有对端停止传输数据，他才会发送类似于ack的包来让链路up，但对端却配置成了full-duplex，他才不管链路是否是空闲的，他只会不停的发送让链路up的请求，这样下去，链路状态就变成err-disable了。
三、第三个原因BPDU，也就是和portfast和BPDU guard有关。如果一个接口配置了portfast，那也就是说这个接口应该和一个pc连接，pc是不会发送spanning-tree的BPDU帧的，因此这个口也接收BPDU来生成spanning-tree，管理员也是出于好心在同一接口上配置了BPDU guard来防止未知的BPDU帧以增强安全性，但他恰恰不小心把一个交换机接到这个同时配置了portfast和BPDU guard接口上，于是这个接口接到了BPDU帧，因为配置了BPDU guard，这个接口自然要进入到err-disable状态。解决办法：no spanning-tree portfast bpduguard default，或者直接把portfast关了。
第四个原因是UDLD。UDLD是cisco的私有2层协议，用于检测链路的单向问题。有的时候物理层是up的，但链路层就是down，这时候就需要UDLD去检测链路是否是真的up的。当AB两端都配置好UDLD后，A给B发送一个包含自己port id的UDLD帧，B收到后会返回一个UDLD帧，并在其中包含了收到的A的port id，当A接收到这个帧并发现自己的port id也在其中后，认为这链路是好的。反之就变成err-disable状态了。假设A配置了UDLD，而B没有配置UDLD：A给B发送一个包含自己port id的帧，B收到后并不知道这个帧是什么，也就不会返回一个包含A的port id的UDLD帧，那么这时候A就认为这条链路是一个单向链路，自然也就变成err-disable状态了。
第五个原因就是链路的抖动，当链路在10秒内反复up、down五次，那么就进入err-disable状态。
第六个原因就是keepalive loopback。在12.1EA之前，默认情况下交换机会在所有接口都发送keepalive信息，由于一些不通交换机协商spanning-tree可能会有问题，一个接口又收到了自己发出的keepalive，那么这个接口就会变成err-disable了。解决办法就是把keepalive关了。或者把ios升到12.2SE。
最后一个原因，相对简单，就是由于配置了port-security violation shutdown。

Introduction
Prerequisites
Requirements
Components Used
Conventions
%C6KPWR-SP-4-UNSUPPORTED: unsupported module in slot [num], power not allowed: [chars]
Problem
Description
Workaround
%DUAL-3-INTERNAL: IP-EIGRP 1: Internal Error
Problem
Description
Workaround
%EARL_L3_ASIC-SP-4-INTR_THROTTLE: Throttling “IP_TOO_SHRT”
Problem
Description
Workaround
%EARL_L3_ASIC-SP-3-INTR_WARN: EARL L3 ASIC: Non-fatal interrupt [chars]
Problem
Description
Workaround
%EARL_NETFLOW-4-TCAM_THRLD: Netflow TCAM threshold exceeded, TCAM Utilization [[dec]%]
Problem
Description
Workaround
%ETHCNTR-3-LOOP_BACK_DETECTED : Keepalive packet loop-back detected on [chars]
Problem
Description
Workaround
loadprog: error – on file open boot: cannot load “cisco2-Cat6k-MSFC”
Problem
Description
Workaround
%L3_ASIC-DFC3-4-ERR_INTRPT: Interrupt TF_INT:FI_DATA_INT
Problem
Description
%MLS_STAT-SP-4-IP_LEN_ERR: MAC/IP length inconsistencies
Problem
Description
%MLS_STAT-SP-4-IP_CSUM_ERR: IP checksum errors
Problem
Description
Workaround
%MCAST-SP-6-ADDRESS_ALIASING_FALLBACK
Problem
Description
c6k_pwr_get_fru_present(): can’t find fru_info for fru type 6, #
Problem
Description
%MROUTE-3-TWHEEL_DELAY_ERR
Problem
Description
%MCAST-SP-6-GC_LIMIT_EXCEEDED
Problem
Description
Workaround
%MISTRAL-SP-3-ERROR: Error condition detected: TM_NPP_PARITY_ERROR
Problem
Description
%MLS_STAT-4-IP_TOO_SHRT: Too short IP packets received
Problem
Description
Processor [number] of module in slot [number] cannot service session requests
Problem
Description
%PM_SCP-1-LCP_FW_ERR: System resetting module [dec] to recover from error: [chars]
Problem
Description
Workaround
%PM_SCP-SP-4-UNK_OPCODE: Received unknown unsolicited message from module [dec], opcode [hex]
Problem
Description
Workaround
%QM-4-TCAM_ENTRY: Hardware TCAM entry capacity exceeded
Problem
Description
Workaround
%slot_earl_icc_shim_addr: Slot [num] is neither SuperCard nor Supervisor – Invalid slot
Problem
Description
%SYSTEM_CONTROLLER-SP-3-ERROR: Error condition detected: TM_NPP_PARITY_ERROR
Problem
Description
Workaround
SP: Linecard endpoint of Channel 14 lost Sync. to Lower fabric and trying to recover now!
Problem
Description
%SYSTEM-1-INITFAIL: Network boot is not supported
Problem
Description
Resolution
CPU_MONITOR-3-TIMED_OUT or CPU_MONITOR-6-NOT_HEARD
Problem
Description
Workaround
% Invalid IDPROM image for linecard
Problem
Description
Workaround
%C6KPWR-4-DISABLED: Power to module in slot [dec] set [chars]
Problem
Description
Workaround
ONLINE-SP-6-INITFAIL: Module [dec]: Failed to [chars]
Problem
Description
Workaround
FM_EARL7-4-FLOW_FEAT_FLOWMASK_REQ_FAIL
Problem
Description
Workaround
MCAST-2-IGMP_SNOOP_DISABLE
Problem
Description
Workaround
C6KERRDETECT-2-FIFOCRITLEVEL: System detected an unrecoverable resources error on the active supervisor pinnacle
Problem
Description
Workaround
SP-RP Ping Test[7]: Test skipped due to high traffic/CPU utilization
Problem
Description
Workaround
SW_VLAN-4-MAX_SUB_INT
Problem
Description
Workaround
MCAST-6-L2_HASH_BUCKET_COLLISION
Problem
Description
Workaround
%QM-4-AGG_POL_EXCEEDED: QoS Hardware Resources Exceeded : Out of Aggregate policers
Problem
Description
Workaround
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Related Information

Introduction

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无色无味(杨波) 的Web Log(博客)

simware 模拟交换的文件。

Cisco Press CCNP SWITCH 642-813 Cert Kit DVD

Cisco Press CCNP SWITCH 642-813 Cert Kit DVD

Cisco CCNP Pack 2010

新版 CCNP 学习用书

新版 CCNP 学习用书 CCNP ROUTE 642-902

关于cisco3550交换机端口err-disable的一点知识记录

Common Error Messages on Catalyst 6500/6000 Series Switches Running Cisco IOS Software

Contents

Introduction

我自己

相关书籍

分类目录

最近文章

文章索引模板

功能

CISCO

国外资源站

链接表

Slideshow

页面

无色无味(杨波) 的Web Log(博客)

simware 模拟交换的文件。

Cisco Press CCNP SWITCH 642-813 Cert Kit DVD

Cisco Press CCNP SWITCH 642-813 Cert Kit DVD

Cisco CCNP Pack 2010

新版 CCNP 学习用书

新版 CCNP 学习用书 CCNP ROUTE 642-902

关于cisco3550交换机 端口err-disable的一点知识记录

Common Error Messages on Catalyst 6500/6000 Series Switches Running Cisco IOS Software

Contents

Introduction

我自己

相关书籍

分类目录

最近文章

标签

文章索引模板

功能

CISCO

国外资源站

链接表

Slideshow

页面

关于cisco3550交换机端口err-disable的一点知识记录