Sometimes you have a connection between 2 routers that you want to test with something more than a ping. Cisco devices have a hidden command which is actually a very powerful testing tool for your TCP connection.
The command is [...] Continue Reading…
Many of you already know that usually when you advertise a Loopback interface into OSPF it is advertised with /32 netmask (one IP address) even if the IP address under Loopback interface is with a /24 netmask. If you [...] Continue Reading…
During my CCIE R&S preparation for lab exam, I encounter a task that requested me to advertise a subnet into OSPF routing protocol, but without using network statement or redistribution command. Since back then I was a little confuse [...] Continue Reading…
Most of you already know that in Dynamips after a reload of a switch all the vlans and vtp configurations are gone. There is a way how to save the vlan and vtp configuration even in case of a [...] Continue Reading…
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