Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

Junos ®
OS 12.3 Ethernet Interfaces Configuration Guide
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Enabling VLAN Tagging
56
Table 3: VLAN ID Range by Interface Type (continued)
•
Interface Type
Gigabit Ethernet IQ
10-Gigabit Ethernet
Management and internal Ethernet interfaces
VLAN ID Range
1 through 4094
1 through 4094
1 through 1023
NOTE: 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 Configuration
Guide.
802.1Q VLANs Overview on page 53
• Junos® OS Ethernet Interfaces
You can configure the router 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:
• Configuring Single-Tag Framing on page 57
• Configuring Dual Tagging on page 57
• Configuring Mixed Tagging on page 57
• Configuring Mixed Tagging Support for Untagged Packets on page 58
• Example: Configuring Mixed Tagging on page 58
• Example: Configuring Mixed Tagging to Support Untagged Packets on page 59
NOTE: If you configure VLAN tagging on Gigabit Ethernet IQ, IQ2 and IQ2-E
interfaces on M320, M120, and T Series routers, the Junos OS 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
and IQ2-E interfaces. As a result, the effective available bandwidth for these
interface types is now 999.5 Mbps and 998 Mbps, respectively.
Copyright © 2012, Juniper Networks, Inc.