TDC363-3-vlans.pdf - TDC 363 Introduction to LANs Ethernet Switches and VLANs Greg Brewster DePaul University Topics Ethernet Switches Forwarding Table

TDC363-3-vlans.pdf - TDC 363 Introduction to LANs Ethernet...

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TDC 363 Introduction to LANs Greg Brewster DePaul University Ethernet Switches and VLANs
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Ethernet Switches Forwarding Table Learning New Addresses Virtual LANs Routing between VLANs Layer 3 Switches Topics TDC 363 Greg Brewster, DePaul University 2
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Ethernet Switches Ethernet Switch – Delivers data frame based on its MAC Destination address Switch receives Ethernet frame Switch looks up 6-byte Destination Address in a Forwarding Table Forwarding Table also called Mac Address Table or CAM Table Sends frame out only the port associated with the Destination Address Old 2-port switches were called bridges . TDC 363 Greg Brewster, DePaul University 3
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Switched Ethernet Data delivery via intelligent switch Ethernet Switch Twisted Pair #4 #3 #2 #1 Example: PC #1 puts MAC address “#2” into Destination Address field of Ethernet header and transmits data frame to Switch Switch checks its MAC Forwarding Table and ONLY transmits data frame to #2. TDC 363 Greg Brewster, DePaul University 4
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