User manual ZYXEL GS-4024

[. . . ] GS-4024 Ethernet Switch User's Guide Version 3. 60 4/2005 GS-4024 User's Guide Copyright Copyright © 2005 by ZyXEL Communications Corporation. The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation. All rights reserved. Disclaimer ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. [. . . ] Ports with registration forbidden are forbidden to join the specified VLAN. Ports belonging to the specified VLAN tag all outgoing frames transmitted. Ports belonging to the specified don't tag all outgoing frames transmitted. 82 Chapter 8 VLAN GS-4024 User's Guide Table 13 GARP Terminology (continued) VLAN PARAMETER TERM VLAN Port Port VID Acceptable frame type Ingress filtering DESCRIPTION This is the VLAN ID assigned to untagged frames that this port received. You may choose to accept both tagged and untagged incoming frames or just tagged incoming frames on a port. If set, the switch discards incoming frames for VLANs that do not have this port as a member 8. 3 Port VLAN Trunking Enable VLAN Trunking on a port to allow frames belonging to unknown VLAN groups to pass through that port. This is useful if you want to set up VLAN groups on end devices without having to configure the same VLAN groups on intermediary devices. Suppose you want to create VLAN groups 1 and 2 (V1 and V2) on devices A and B. Without VLAN Trunking, you must configure VLAN groups 1 and 2 on all intermediary switches C, D and E; otherwise they will drop frames with unknown VLAN group tags. However, with VLAN Trunking enabled on a port(s) in each intermediary switch you only need to create VLAN groups in the end devices (A and B). C, D and E automatically allow frames with VLAN group tags 1 and 2 (VLAN groups that are unknown to those switches) to pass through their VLAN trunking port(s). Figure 30 Port VLAN Trunking 8. 4 Selecting the VLAN Type Select a VLAN type in the Switch Setup screen. Figure 31 Switch Setup: Select VLAN Type Chapter 8 VLAN 83 GS-4024 User's Guide 8. 5 Static VLAN Use a static VLAN to decide whether an incoming frame on a port should be · sent to a VLAN group as normal depends on its VLAN tag. You can also tag all outgoing frames (that were previously untagged) from a port with the specified VID. 8. 5. 1 Static VLAN Status Click Advanced Application, VLAN from the navigation panel to display the VLAN Status screen as shown next. Figure 32 VLAN: VLAN Status The following table describes the labels in this screen. Table 14 VLAN: VLAN Status LABEL The Number of VLAN Index VID DESCRIPTION This is the number of VLANs configured on the switch. This is the VLAN identification number that was configured in the VLAN Setup screen. 84 Chapter 8 VLAN GS-4024 User's Guide Table 14 VLAN: VLAN Status (continued) LABEL Port Number DESCRIPTION This column displays the ports that are participating in a VLAN. A tagged port is marked as T, an untagged port is marked as U and ports not participating in a VLAN are marked as "­". This field shows how long it has been since a normal VLAN was registered or a static VLAN was set up. This field shows how this VLAN was added to the switch; dynamically using GVRP or statically, that is, added as a permanent entry. You may change the refresh interval by typing a new number in the text box and then clicking Set Interval. Click Previous Page or Next Page to show the previous/next screen if all status information cannot be seen in one screen. Elapsed Time Status Poll Interval(s) Stop Change Pages 8. 5. 2 Configure a Static VLAN To configure a new VLAN, click Static VLAN in the VLAN Status screen to display the screen as shown next. Figure 33 VLAN: Static VLAN The following table describes the related labels in this screen. Chapter 8 VLAN 85 GS-4024 User's Guide Table 15 VLAN: Static VLAN LABEL ACTIVE Name VLAN Group ID Port Control DESCRIPTION Select this check box to activate the VLAN settings. Enter a descriptive name (up to nine printable ASCII characters) for the VLAN group for identification purposes. Select Normal for the port to dynamically join this VLAN group using GVRP. Select Fixed for the port to be a permanent member of this VLAN group. Select Forbidden if you want to prohibit the port from joining this VLAN group. Select TX Tagging if you want the port to tag all outgoing frames (that were previously untagged) transmitted with this VLAN Group ID. [. . . ] The number of "borrowed" host ID bits determines the number of subnets you can have. The remaining number of host ID bits (after "borrowing") determines the number of hosts you can have on each subnet. Table 105 Subnet 1 NETWORK NUMBER IP Address IP Address (Binary) Subnet Mask Subnet Mask (Binary) Subnet Address: 192. 168. 1. 0 Broadcast Address: 192. 168. 1. 127 192. 168. 1. Lowest Host ID: 192. 168. 1. 1 Highest Host ID: 192. 168. 1. 126 LAST OCTET BIT VALUE 0 00000000 128 10000000 Table 106 Subnet 2 NETWORK NUMBER IP Address IP Address (Binary) Subnet Mask Subnet Mask (Binary) Subnet Address: 192. 168. 1. 128 Broadcast Address: 192. 168. 1. 255 192. 168. 1. Lowest Host ID: 192. 168. 1. 129 Highest Host ID: 192. 168. 1. 254 LAST OCTET BIT VALUE 128 10000000 128 10000000 The remaining 7 bits determine the number of hosts each subnet can have. [. . . ]