- The STP based access option supports spanning VLANs across multiple access switches, whereas the Routed access option does not.
- The Routed access option is the best cost-effective solution.
- The STP based option does not require FHRP, whereas the Routed access option does.
- The Routed access option offers easier troubleshooting than the STP-based option.
Explanation: The Routed access design has a number of advantages over the STP-based design:
- No FHRP required – no need for FHRP protocols such as HSRP and VRRP.
- No STP required – since there are no L2 links to block, this design removes the need for STP.
- Easier troubleshooting – It offers common end-to-end troubleshooting tools (such as ping and traceroute).
The Routed access is an excellent design for many environments, but it has the same limitation as the STP-based design, in which it does not support spanning VLANs across multiple access switches. Additionally, it might not be the most cost-effective solution because access layer switches with Layer 3 routing capability might cost more than Layer 2 switches do.
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