Cisco basic NAT configuration examples and Tips

Here is Cisco basic NAT configuration and samples.   1. Basic configuration   – Access-list for pool of participant network ex) access-list 100 permit ip…

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DHCP Troubleshooting Tips

Tweet Create Extended Access-list 120 access-list 120 permit ip host 0.0.0.0 host 255.255.255.255 access-list 120 permit udp host host eq 67 access-list 120 permit udp…

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TCP/IP 3-way handshake in WireShark

Tweet Here is a well explained video for how to TCP/IP 3-way handshake in WireShark tool

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IPv6 testing site from Comcast or public

World IPv6day by The Internet Society (ISOC) is on June 8, 2011. If you are comcast user, test your IPv6 capability of your network. or…

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TCP/IP model

Here is well present about TCP/IP model from Youtube.com   {youtube}tCRBa3fTR3A{/youtube}  

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Site-local IPv6 Address

Site-local IPv6 address is similar to private IPv4 address defined in RFC 1918. This site-local address is for private network. It cannot be used on…

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Hosts.txt file location to set up for static DNS entry.

Check below location to find a hosts.txt file to set up a static DNS resolution Windows 95/98/Me — c:\windows\hosts Windows NT/2000/XP Pro — c:\winnt\system32\drivers\etc\hosts Windows…

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IPv6 addressing install guide for windows XP and Vista

Tweet For the windows systems, no IPv6 software installation is necessary, but IPv6 stack should be enable to use IPv6 addressing. The procedure is quite…

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IPv6 header VS. IPv4 header

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IPv6 Allocation size

Tweet – 2003::/3 ; is reserved for global unicast – /12 is allocated from IANA to RIRs – /32 is allocated from RIRs to ISPs…

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IPv6 over Frame-Relay configuration sample

Tweet In this example, two routers are connected thru Frame-relay switch. Global-unicast IPv6 address is 2001:CC1E:1:2::/64 + EUI-64. DLCI numbers are 102 and 201 to…

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Global-unicast IPv6 address

Tweet A global-unicast IPv6 address is start with binary 001, 2000::/3 and it also known as an aggregatable global IPv6 address. Full global-unicast IPv6 address…

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