Cabletron Systems SmartSTACK ELS10-27TX Supplement Manual

Contents

Introduction1-51.3.3.2 Non-Preserving PriorityUse this method if there is no concern about passing priority from one device toanother. Configure the same PVID at both ends of the trunk link to ensure that alltraffic will be forwarded correctly.In order to implement this, the ports at both ends of the link must work the same,that is:• Strips tags on egress of the ports that match the PVID• Inserts a tag using the PVID when there is no tag• Changes the tag on egress with an ID of zero to the PVIDThe tag will be stripped on egress of that port, when it matches the PVID. Whenthe packet is received by the peer, a tag with the same VLAN ID will be insertedand the packet will be forwarded as though the packet traversed the trunk linkwith the tag in place. However, the priority bits will not be reserved.1.3.4 Accessing Network Management Using VLANsWhen an IP address is configured on the unit, it must be associated with theVLAN. If multiple VLANs are configured on a switch, you can configuremultiple IP addresses provided they are on separate subnets. Therefore, when anIP address is assigned to a switch, the VLAN ID for the subnet must be specified.When the network management processor issues a response to a networkmanagement packet, it selects the correct VLAN ID to use based on the IPsubnet.For further information, refer to IP Address Command or the VLAN Command inChapter 2, Enhancements to LCM Commands.