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This document descripts how to perform a password recovery on the following switches: Cisco Catalyst 1700 Cisco Catalyst 1900 Cisco Catalyst 2100 Cisco Catalyst 2800 Cisco Catalyst 2820 Step-by-Step Procedure Check the boot firmware version number from the Systems Engineering menu. If the firmware is 1.10 or later, the continue through this document. For older firmwares, please contact Cisco to recover the password. Clearing the Password Power-cycle the switch. After POST completes, the following prompt displays: Do you wish to clear the passwords? [Y]es or [N]o: Note: You have ten seconds to respond. If you don't respond within that time, the Management Console Logon screen displays. You cannot change this waiting period. Enter [Y]es to delete the existing password from nonvolatile RAM (NVRAM). Note: If you type [N]o, the existing password remains valid. Assign a password from the switch management interfaces (management console or command line interface (CLI)). Viewi...

This document describes the password recovery procedure for the Cisco Catalyst 2900-XL and the Cisco Catalyst 3500-XL. Step-by-Step Procedure Attach a terminal or PC with terminal emulation to the console port of the switch. Use the following terminal settings: 9600 baud rate No parity 8 data bits No stop bit Unplug the power cable. Hold down the mode button while reconnecting the power cord to the switch. You can release the mode button a second or two after the LED above port 1x is no longer illuminated. The following instructions appear: The system has been interrupted prior to initializing the flash file system. The following commands will initialize the flash file system, and finish loading the operating system software: flash_init load_helper boot Type flash_init . Type load_helper . Type dir flash: . The switch file system is displayed: Directory of flash: 2 -rwx 843947 Mar 01 1993 00:02:18 C2900XL-h-mz-112.8-SA 4 drwx 3776 Mar 01 1993 01:23:24 html 6...

This document describes the password recovery procedure for the Cisco 1600 series routers. Step-by-Step Procedure Attach a terminal or PC with terminal emulation to the console port of the router. Use the following terminal settings: 9600 baud rate No parity 8 data bits 1 stop bit No flow control Type show version and record the setting of the configuration register; it is usually 0x2102 or 0x102. Note: Do not continue to step 3 until you record the setting of the configuration register. In step 14 of this password recovery procedure, you must reset the configuration register to the setting that you record in this step. Using the power switch, turn off the router and then turn it on. Press Break on the terminal keyboard within 60 seconds of the powerup to put the router into ROMMON. If the break sequence doesn't work, you can try CTRL+BREAK or possibly sending it through an ASCII code. Type confreg 0x2142 at the rommon 1> prompt to boot from Flash without loadi...

hi guys this is an intersting DOC on BGP security http://www.renesys.com/tech/notes/WP_BGP_rev6.pdf

Cisco Command Juniper Command Co-Ordinating Definition show run sh configuration Show running configuration sh ver sh ver Show version show ip interface brief show interface terse displays the status of interfaces configured for IP show interface [intfc] show interfaces [intfc] detail displays the interface configuration, status and statistics. show controller intfc show interfaces intfc extensive displays information about a physical port device show interface | incl (proto|Desc) show interfaces description displays the interface configuration, status and statistics show ip route show route displays summary information about entries in the routing table show ip bgp summary show bgp summary displays the status of all Border Gateway Protocol (BGP) connections show ip bgp net mask show route protocol bgp prefix will show you how that route is being advertised, look for the first line show ip bgp net mask longer-prefixes show route range prefix will show you how that route is ...

http://www.examcollection.com/cisco/Cisco.PassGuide.640-802.v2010-05-23.by.jijesh.356q.vce.file.html http://www.examcollection.com/cisco/Cisco.Certkey.640-802.v2010-12-24.by.Jesses.665q.vce.file.html

BGP Synchronization A BGP router with synchronization enabled will not advertise its iBGP learned routes to its eBGP peers unless it has learned or verified this route on its routing table through an IGP. This feature can be useful if in an AS not all routers are running BGP. The purpose of this post is to illustrate the difference between synchronization being enabled versus it being disabled. We will also take a look for some work arounds for the problems it creates. Take a look at the diagram below for the lab. R1 is on AS 1 while R2 and R3 is on AS 23. Now configure the router with the configuration below. R1 ! interface Serial1/0 ip address 192.168.12.1 255.255.255.0 serial restart-delay 0 ! router bgp 1 no synchronization bgp log-neighbor-changes neighbor 192.168.12.2 remote-as 23 no auto-summary R2 ! interface Serial1/0 ip address 192.168.12.2 255.255.255.0 serial restart-delay 0 ! interface Serial1/1 ip address 192.168.23.2 255.255.255.0 serial restart-d...