System information

 Layer 3 Tunnel
Working Principles of Basic Functions
Layer 3 Tunnel Limitation
 Tunneled packets have extra 20 bytes in header for all devices. It
does TCP MSS Reduction to avoid the frame over-sizing issue.
 IPv6 clients are not supported on tunneled interfaces.
 Only unicast IPv4 traffic is tunneled in hardware.
 Multicast traffic and Non-IP traffic are tunneled in software.
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 All devices that use the L3 tunnel network are stored in the ARP
cache because the wireless subnet is local to the switch (ARP cache
fills up faster than expected).
fills up faster than expected).
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