Differences among S series fixed switches

The S2700, S3700, S5700, and S6700 have LI, SI, EI, and HI series:
LI: limited version. The LI series supports Layer 2 protocols (such as MAC and VLAN) and static route.
SI: standard version. The SI series supports basic Layer 2 protocols, static route, and RIP.
EI: enhanced version. In addition to features supported by the SI series, the EI series also supports unicast and multicast routing protocols such as RIP, OSPF, IS-IS, BGP, PIM, and IGMP, and simple reliability protocol VRRP.
HI: high-end version. In addition to features supported by the EI series, the HI series also supports reliability technology BFD, MPLS, and L2/L3 VPN.

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