The JUNOS software supports receiving and forwarding routed or bridged Ethernet frames with 802.1Q VLAN tags, and running Virtual Router Redundancy Protocol (VRRP) over 802.1Q-tagged interfaces.
You can configure the routing platform to receive and forward single-tag frames, dual-tag frames, or a mixture of single-tag and dual-tag frames. For more information, see the following sections:
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Note: If you configure VLAN tagging on Gigabit Ethernet IQ and IQ2 interfaces on M320, M120, and T-series routing platforms, the JUNOS software creates an internal logical interface that reserves 50 Kbps of bandwidth from Gigabit Ethernet IQ interfaces and 2 Mbps of bandwidth from Gigabit Ethernet IQ2 interfaces. As a result, the effective available bandwidth for these interface types is now 999.5 Mbps and 998 Mbps, respectively. |
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