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Users who use Cisco switches have encountered many problems. Here we mainly analyze the failure and solution of Cisco switches triggered by IOS. Summary of the fault recovery solution for Cisco switches triggered by IOS, today's topic on preventing Cisco switch faults is discussed about how to cope with

I believe that many users who use cisco routers have encountered such problems. It does not matter. Next we analyze two common troubleshooting methods for cisco switches. The organization bought a new cisco switch a few days ago, with the WS-X6548-GE-TX, cisco was launched i

1. CISCO starts the product is the router;2. RSP starts with the CISCO7500 series of engines;3. VIP start-up products are the Cisco 7500 series of multi-functional interface processor modules;4. The products that start with PA are modules of the Cisco 7500/7200 Series products;5. The NPE starts with the CISCO7200 series engine;6. NM starts with the

network respectively. The following describes the products of these series: 1. Low-end products: 1900 and 2900 are typical low-end products. In fact, Cisco does not take a special advantage in the low-end switch market, because 3Com, Dlink and other companies have better performance and price ratios. The 1900 vswitch is a typical low-end product for desktop computer access at the end of the network. It provides 12 or 24 10 M ports and 2 100 M ports.

VLAN database is configured, you must enter exit to save it;VLAN troubleshooting: physical connection> Switch configuration> VLAN configuration;Physical connections include CDP and duplex;The Trunk is a link between two vswitches;802.1 p: Priority of the 802.1qTAG field;Tunnel requires two tags: one for the enterprise and one for the carrier. The carrier can transmit VLAN, CDP, VTP, STP, and other information;Native VLAN is unique to 802.1q. It is vlan 1 and is used to manage VLANs;ISL will als

the network respectively. The following describes the products of these series: 1. Low-end products Let's talk about low-end products. 1900 and 2900 are typical low-end products. In fact, Cisco does not take a special advantage in the low-end switch market, because 3Com, Dlink and other companies have better performance and price ratios. The 1900 vswitch is a typical low-end product for desktop computer access at the end of the network. It provides 1

describes the products of these series: 1. Low-end products Let's talk about low-end products. 1900 and 2900 are typical low-end products. In fact, Cisco does not take a special advantage in the low-end switch market, because 3Com, Dlink and other companies have better performance and price ratios. The 1900 vswitch is a typical low-end product for desktop computer access at the end of the network. It provides 12 or 24 10 M ports and 2 100 M ports. Th

Droppe d:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Until This step, creating and configuring VLANs has been done on the Linux box. Now we is going to configure VLAN and trunk on the Cisco Catalyst switch.4. Configure

Software Introduction Cisco device module gns3v0.7.2 all-in-one tool software, excellent Cisco simulation software, and centralized Juniper simulation!Gns3 is a graphical network simulator that allows you to simulate complex networks. To make the complete simulation, gns3 is closely related to the following software:Dynamips, the core program, allows Cisco IO

The type of the route. Currently, it can be 7200, 3600, 2691, 3725, or 3745. The default value is 7200. -P is followed by the slot number: Module name, indicating that the port module is inserted in the physical slot (starting from 0). For specific command usage, see the official documentation. Next we will simulate a Cisco 3640 instance. slot0 is connected to a fast Ethernet board, and slot1 is connected to a 4-port E1. Dynamips-P 3600-p: NM-1F

(config) #no monitor session 1Switch (config) #endSwitch#wrSwitch#show MonitorNo SPAN configuration is present in the system.3. Other(1) Port image filtering, port mirroring can do filter.Monitor session session_number Filter VLAN Vlan-id [, |-]* * Specifies which VLANs belong to the traffic that the source port is entering, and can be emitted from the destination port.(2) Delete imageNo monitor session {Session_number | all | local | remote}**SESSION_NUMBER Specifies the session number, all is

, midrange, and high-end of the network, respectively. Here are a few of the products for each series: 1, low-end products First of all say low-end products, 1900 and 2900 are low-end products typical. In fact, in the low-end switch market, Cisco does not occupy a particular advantage, because the 3Com, DLink and other companies have a better performance price ratio of products. The 1900 switch is suitable for desktop computer access at the end of

documentation. Next we will simulate a Cisco 3640 instance. slot0 is connected to a fast Ethernet board, and slot1 is connected to a 4-port E1. Dynamips-P 3600-p: NM-1FE-TX-p 1: NM-4T c3640-i-mz.122-13.T1.bin Cisco 7200 Simulation Platform (version 0.2.6-RC4-x86) Copyright (c) Christophe Fillot. Build date: Nov 15 2006 23:05:16 IOS image file: c3640-i-mz.122-13.

This article mainly introduces the custom topology of the Cisco simulator and the procedure for configuring it. What should we pay attention to when configuring it? The following article will give you a detailed answer. Dynamips is made by a foreign friend called chris. If your foreign language is good, you can go to the author's BLOG to see the latest download. The author's BLOG is http://www.ipflow.utc.fr/blog /. The software is an open-source softw

source sessionSource ports:RX only: fa0/11-13, fa0/15BOTH: fa0/10Reflector port: fa0/20DeST rspan VLAN: 800 4.3 configure rspan destination session Switch (config) # monitor session 1 source Remote VLAN 800Switch (config) # monitor session 1 destination interface fastethernet0/30Switch (config) # End Sw2 # sh mo se 1Session 1---------Type: remote destination sessionSource rspan VLAN: 800Destination Ports: fa0/30Encapsulation: NativeIngress: Disabled (VLAN-based rspan) VLAN-based rspan is simila

, see: Http://blog.chinaunix.net/uid-49097-id-78251.html Iii. configurations under a vswitch: (config)#interface range gigabitEthernet 0/6 -7(config-if-range)#switchport access vlan 10 (config-if-range)#channel-protocol lacp(config-if-range)#channel-group 3 mode active(config)#interface port-channel 3(config-if)#switchport access vlan 10 Iv. Host show information: [[Email protected] bonding] # ifconfigBond0 link encap: Ethernet hwaddr 14: Fe: B5: C8: 1A: B7Inet ADDR: 192.168.10.100 bcast: 192

WS-X5530-E3 Management Engine, multiple WS-X5225R in the switch has three virtual network, respectively named default, qbw, rgw, use the Cisco3640 router to implement the inter-network routing. The vswitch settings are similar to Example 1. The Cisco3640 router is equipped with a NM-1FE-TX module with a fast Ethernet interface that supports ISL. The Cisco3640 Fast Ethernet interface is connected to a port supporting isl on the vswitch, for example, 3

"Connection refused by remote host" still appears in telnet host 1015, and an asterisk appears in front of tty. In this case, "clear line tty 68" is required" Terminal Server Configuration: The asynchronous port of the terminal server is connected to the console port of the test router using a Cisco flat cable.Interface loopback0Ip address 1.1.1.1 255.255.255.255ExitaLine 1 16No exec Transport input all ExitTelnet 1.1.1.1 2002 Ip host router1 2002 1.1

First, in the Cisco Remote Access server, with three pairs of lines to connect the DTE and DCE, each pair of lines, one sent, a receipt: 1. TX/RX Data transmission Line Send: Dte->tx->dce Receive: Dte DCE device (MODEM) sends data to DTE via RX, receives data from DTE via TX, sends The rate of reception is set on

only detect misunderstandings of optical fibers, such as Tx and Rx insertion and inversion ). In the aggressive mode, the link is regarded as one-way and closed (the interface is placed in the err-Disable State ).The above is just a rough description. There are a lot of content in the Cisco official documentation. If you want to know more, you can check it. Iv. udld configuration instructions: http://www