![]() ![]() ![]() Before sending ping (ICMP) packets, the station needs to map IP addresses to MAC addresses, so it sends ARP. ![]() Like the MAC address, The LLC logical link control protocol is also layer 2, but is upper sublayer of Data Link Layer and won't affect the ability to capture the traffic unless you specify llc as a filter and there isn't any llc traffic, then you would get the blank screen. The script basically pings all hosts on the network. (I'm assuming the traffic you are looking for is traveling to a destination on another switch, outside the network, or at least to your gateway).īy specifying the MAC address filter, eth.addr eq xx:xx:xx:xx:xx:xx you are filtering for all traffic to and from that associated MAC address. If you are trying to trace MAC's on the switch you are also connected to, then you'll want to sniff from a port which is spanned/mirrored to the port which has inbound/outbound traffic of that switch, so that you will see all the traffic coming in and out of the switch. For instance, tshark -i 1 -R "eth.addr eq xx:xx:xx:xx:xx:xx or eth.addr eq xx:xx:xx:xx:xx:xx" If the Resolve MAC addresses option is enabled, it causes Wireshark to display MAC addresses with an assigned manufacturer code in place of the first three. Move to the previous packet, even if the packet list isn’t focused. Medium Access Control Address (MAC addr) Ethernet or other MAC address: 1.2.0 to 1.6.16: pst.priority: Application Priority: Unsigned integer (1 byte) 1.2.0 to 1.6. In the packet detail, opens all tree items. Display Filter Reference: IEEE 802.11 wireless LAN. Move to the next packet, even if the packet list isn’t focused. You can use a list for your MAC's in one display filter, but not a range, unless you switch to IP's instead of MAC's. In the packet detail, opens the selected tree items and all of its subtrees. If you are using a display filter of eth.addr = xx:xx:xx:xx:xx:xx and you are not seeing any information being displayed/sniffed, then the traffic for that MAC address is not passing through the port you're sniffing on. ![]()
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