Static link aggregation 31• A physical port cannot belong to more than one link aggregation group.• Link aggregation is compatible with the Spanning Tree Protocol.• IEEE 802.1Q tagging is supported on a link aggregation group.• All ports in a link aggregation group must be in the same STG unlessthey are tagged. If tagged, they can belong to multiple STGs.• For static aggregation groups, follow these guidelines:— For 8348TX, 8348TX-PWR, and 8324FX ports, you can use onlylink aggregation groups 1 to 7.— For 8348GB, 8324GTX, 8324GTX-PWR, 8348GTX, and8348GTX-PWR ports, as well as 8308XL, 8393SF, and 8394SF, youcan use link aggregation groups 1 to 31.See note 1.• In addition to the default VLAN, the ERS 8300 supports 4000 VLANs.VLAN IDs range in value from 1 to 4000.• The ports in a link aggregation group can span modules, providingmodule redundancy.• Bridged packet traffic (except for IP distribution) is distributed acrossthe link aggregation group using a source and destination MACaddress-based algorithm.• Bridged and routed IP traffic is distributed across the link aggregationgroup using a source and destination MAC and IP address-basedalgorithm.1 See Nortel Ethernet Routing Switch Release Notes — Software Release4.0 (NN46200-401) for the latest information about supported softwareand hardware capabilities.Link aggregation examplesWith link aggregation, you can group switch ports together to form a linkto another switch or server, thus increasing aggregate throughput of theinterconnection between the devices. When the Spanning Tree Protocol isenabled, Link aggregation software detects misconfigured or broken trunklinks and removes the port from the link aggregation group.Switch-to-switch link aggregation configurationFigure 5 "Switch-to-switch link aggregation configuration" (page 32) showstwo trunks (T1 and T2) connecting switch S1 to switches S2 and S3.Nortel Ethernet Routing Switch 8300Configuration — VLANs, Spanning Tree, and Static Link Aggregation using Device ManagerNN46200-510 03.01 Standard4.0 27 August 2007Copyright © 2005-2007, Nortel Networks.
