Hi. When switch does switching, it operates only mac addresses, or it also checks vlan number? For example: Switch receive packet from one vlan and this packet somehow has destination mac belonging to host in another vlan, will switch forward this packet despite the number of vlan?
Notice the first column of the MAC address table lists the VLAN. The switch verifies the VLAN and will only forward frames out ports in that VLAN and trunks. In order to move move packets between VLANs, you need a layer 3 device.
Thank you. I think so, too. But vlan hopping attack explanation says that first switch send a packet sourced from one vlan to another vlan. For example, first switch receive a double tagged packet from attacker, then strip off first tag (which supposed to be native vlan tag), and send it through trunk to another switch. But the fact that this double tagged packet in the destination mac field should contain mac address from another vlan, but despite this first switch forward this packet. It sounds strange to me.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...