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Layer 2 VPN

  • Loop detection for Layer 2 network (EX4100-24MP, EX4100-24P, EX4100-24T, EX4100-48MP, EX4100-48P, EX4100-48T, EX4100-F-12P, EX4100-F-12T, EX4100-F-24P, EX4100-F-24T, EX4100-F-48P, EX4100-F-48T, EX4400-24MP, EX4400-24P, EX4400-24T, EX4400-24X, EX4400-48F, EX4400-48MP, EX4400-48P, and EX4400-48T)―We’ve expanded loop detection to Layer 2 (L2) networks, regardless of whether EVPN is configured or not. In earlier releases, we supported enhanced loop detection only in EVPN-VXLAN networks. This feature detects the following types of Ethernet loops:

    • A loop between two interfaces in different Ethernet segments (ESs). This loop is typically caused by miswiring fabric components.

    • A loop between two interfaces with the same Ethernet segment identifier (ESI). This loop is typically caused by miswiring a third-party switch to the fabric.

    To enable loop detection for a logical interface or for all logical interfaces, use the loop-detect statement at the [edit protocols] hierarchy level.

    [See loop-detect.]