Month: March 2010

What is implicit withdraw and explicit withdraw? ex} :   Route map for outgoing advertisements is out-cust-full                                                   Sent         …

Here is VoIP protocols on OSI 7 Layers   Layer 6 / Presentation ; G.729(A), G.723, G.711 Layer 5 / Session ; H.323, SIP, SDP…

Here is the sample configuration to allow traceroute(Unix or Network devices) and tracert(MS Windows) "TraceRoute" commands of Unix and Cisco devices send UDP packets, while…

Tweet Spiceworks; How Do I Resolve Unknown Windows Machines In A Domain Environment? Best practice and workaround see below article; http://community.spiceworks.com/help/Resolving_Unknown_Devices#Domain

What cause "err-disable"? see below conditions 1. Port-channel misconfiguration 2. DHCP snooping rate-limiting 3. Duplex mismatch 4. Bridge Protocol Data Unit(BPDU) Guard violation 5. UniDirectional…

Tweet Password recovery in Cisco Catalyst 5000 switch is performed in the following steps. Power cycle the Cisco Catalyst 5000 switch. Hit the Enter key…

Tweet Found the below link while googling some tutorial about STP(Spanning-tree Protocol).  It is easy to understand STP behavior. Enjoy http://www.cisco.com/image/gif/paws/10556/spanning_tree1.swf

Tweet STP(Spanning-Tree Protocol) Timers Hello timer Hello timer is the time between each Bridge Protocol Data Unit(BPDU) that is sent on a port. This is…

  Check this URL to see all light level of Cisco module http://www.cisco.com/en/US/products/hw/modules/ps5455/prod_module_series_home.html   =========== CISCO 12008 =========== 4-port OC-3/STM-1 ATM/SDH MM LC w/SC (…

Scrambling for POS interfaces is set on the interface itself. It is not a controller option..   Cisco Router# sho int pos5/1 POS5/1 is up,…

This is very useful documentation for SONET basic 101. Must see if you are learning SONET or refresh your SONET knowledge. http://www.cisco.com/en/US/tech/tk482/tk607/technologies_tech_note09186a0080124afa.shtml