802.1Q VLAN IDs and Ethernet Interface Types
VLAN ID 0 is reserved for tagging the priority of frames. VLAN IDs 1 through 511 are reserved for normal VLANs. VLAN IDs 512 and above are reserved for VLAN circuit cross-connect (CCCs).
For Gigabit Ethernet IQ interfaces and Gigabit Ethernet PICs with SFPs (except the 10-port Gigabit Ethernet PIC and the built-in Gigabit Ethernet port on the M7i router), you can configure flexible Ethernet services encapsulation on the physical interface. With flexible Ethernet services encapsulation, VLAN IDs from 1 through 511 are no longer reserved for normal VLANs.
The maximum number of user-configurable VLANs is 15 on each port of the Dense-FE PIC (8-port/12-port/48-port).
Table 1 lists VLAN ID range by interface type.
Interface Type |
VLAN ID Range |
|---|---|
Aggregated Ethernet for Fast Ethernet |
1 through 1023 |
Aggregate Ethernet for Gigabit Ethernet |
1 through 4094 |
4-port, 8-port, and 12-port Fast Ethernet |
1 through 1023 |
48-port Fast Ethernet |
1 through 4094 |
Tri-Rate Ethernet copper |
1 through 4094 |
Gigabit Ethernet |
1 through 4094 |
Gigabit Ethernet IQ |
1 through 4094 |
10-Gigabit Ethernet |
1 through 4094 |
100-Gigabit Ethernet |
1 through 4094 |
Management and internal Ethernet interfaces |
1 through 1023 |
For Gigabit Ethernet IQ and Gigabit Ethernet PICs with SFPs (except the built-in Gigabit Ethernet port on the M7i router), VLAN IDs on a single interface can differ from each other.
Because IS-IS has an 8-bit limit for broadcast multiaccess media, you cannot set up more than 255 adjacencies over Gigabit Ethernet using VLAN tagging. For more information, see the Junos OS Routing Protocols Library for Routing Devices.