by Reashad Hossain | Dec 8, 2020 | Networking
Lets be clear about this, very rarely a network engineer will come across a totally corrupted cisco router. In my case I have got a Cisco 2691 for free. When I booted up I realized that the flash is totally corrupted and there is no IOS in it.To recover the device: I...
by Reashad Hossain | Dec 7, 2020 | Networking
Couple of months ago I was designing ACLs for one of my customers. Their R&D and DHCP server VLAN was different VLANs. My job was to create an ACL so that:R&D VLAN can only talk to the server VLAN. And all the other VLAN communication within that organization...
by Reashad Hossain | Nov 30, 2020 | Networking
HubSwitchall ports belong to a single broadcast domainevery port is a broadcast domain1 machine talk at any given momentfull duplex communicationdata will get broadcasted to all ports.can memorize MAC so no unintended broadcasta hub can not be managed since it...
by Reashad Hossain | Nov 30, 2020 | Networking
Because a Hub broadcasts packets to every single port, so this feature makes it a great alternative to port mirroring or SPAN. A network engineer can simple plug in the source port, destination port and his laptop to the hub and can capture packet and troubleshoot in...
