Dell S3100 Command Line Reference Guide for the Series 9.110.0 - Page 677
portmode hybrid, Layer 2, Overhead, Link MTU and IP MTU Delta, Version, Description
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port channels: • All members must have the same link MTU value and the same IP MTU value. • The port channel link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the channel members. For example, if the members have a link MTU of 2100 and an IP MTU 2000, the port channel's MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU. VLANs: • All members of a VLAN must have same IP MTU value. • Members can have different Link MTU values. Tagged members must have a link MTU 4 bytes higher than untagged members to account for the packet tag. • The VLAN link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the VLAN members. For example, the VLAN contains tagged members with Link MTU of 1522 and IP MTU of 1500 and untagged members with Link MTU of 1518 and IP MTU of 1500. The VLAN's Link MTU cannot be higher than 1518 bytes and its IP MTU cannot be higher than 1500 bytes. The following shows the difference between Link MTU and IP MTU. Layer 2 Overhead Link MTU and IP MTU Delta Ethernet (untagged) 18 bytes VLAN Tag 22 bytes Untagged Packet with VLAN-Stack Header 22 bytes Tagged Packet with 26 bytes VLAN-Stack Header portmode hybrid To accept both tagged and untagged frames, set a physical port or port-channel. A port configured this way is identified as a hybrid port in report displays. Syntax portmode hybrid To return a port to accept either tagged or untagged frames (non-hybrid), use the no portmode hybrid command. Defaults Command Modes Command History non-hybrid INTERFACE This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(0.0P5) Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the S4048-ON. Interfaces 677
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