I went onsite to troubleshoot it and found out that if I cloned my laptop's MAC address with the MAC address of our Toshiba card I could NOT ping or communicate to or past the ISP's gateway.

This past friday our customers router as well as my Toshiba BIPU card stopped working. Based on these parameters, an incoming traffic to a switch can then be marked, prioritized, or rate-limited. Hi there, I am having an issue with an ISP's default gateway. There are different predefined QoS parameters for the Incoming frames. However, the counter decides whom to issue the ticket first. You can imagine ingress queue as a ticket counter serving multiple rows at once. Multiple ingress queues are used to service frames differently, for example, for the quality of service or sending a high priority frame first. Layer 2 switches Application Specific Integrated Circuits (ASIC) is used to maintain and maintain a table of MAC addresses. When a frame is received, the switch will place these frames into an ingress queue. MAC address is hardcoded by the manufacturer on every hosts NIC (Network Interface Card). Let’s say, a switch has 24 ports, then it will maintain ingress queues, one or multiple, at each of these ports. Ingress Queue:Ī switch can maintain one or multiple ingress queue at each port. Unicast flooding is a method to forward the frame through all ports within a VLAN except the port the frame was received on. But have you ever wondered what happens to a frame if the destination MAC address of that frame is not known to the switch? In that case, a switch decided to go for unicast flooding.

Layer 2 mac address learning