Enterasys Vertical Horizon VH-2402S How to use

CUSTOMER RELEASE NOTES
50 Minuteman Road
Andover, MA 01810 (USA)
Tel: [phone]
Vertical Horizon
VH-2402S and VH-2402S2
Firmware Version 2.06.06.00
April 30, 2004
INTRODUCTION:
It is recommended that one thoroughly review this release note prior to the installation or upgrade of this product.
This release provides support for the Vertical Horizon 24-port 10/100 Ethernet switch, VH-2402S as well as the
new replacement unit, VH-2402S2. The VH-2402S/VH-2402S2 is a 24-port dual-speed standalone, stackable or
rack-mountable switch. The switch provides 24 10Base-T/100Base-TX ports, plus two rear-panel slots for optional
slide-in 100Base-FX, 1000Base-SX or 1000Base-LX modules. One of these slots can also be used for an optional
stacking module that allows you to attach up to seven switches to a 4 Gbps high-speed backplane. There is also
another rear-panel slot that accepts an optional SNMP-based Management Module. This module supports both
in-band and out-of-band access for managing the switch and the attached stack.
The VH-2402S/VH-2402S2 switches can be used in a standalone configuration, or can be stacked up to seven
high to form a single logical switch with up to 168, 10/100 Mbps ports. One optional Management Module is
required for configuring a standalone switch or an entire stack. The optional stacking Interconnect Module and
Interconnect Cables are not included with the base unit and need to be ordered separately.
Management of the switch or stack is provided when an optional Management Module is installed. Management
access is provided in-band via Telnet, SNMP, or out of band, via the serial console port interface either directly or
through an attached modem. An embedded Web agent also provides management capability to any computer on
the network via common HTTP browsers such as Netscape Navigator or Microsoft’s Internet Explorer (both
browsers should be Version 4.0 or above).
Local Console Management (LCM) allows the user to monitor and configure the VH-2402S/VH-2402S2 from a
VT-type terminal. LCM can be used to configure features such as SNMP community names and access rights,
Port Enable/Disable, firmware downloads, and Device IP address as well as most other parameters. LCM can
also provide statistical and diagnostic information about the entire device or an individual port.
Management of the switch or stack is password protected; the same password is used for LCM and for the Web
browser interface. Prior to accessing the Management Module via a network connection, a valid IP address,
subnet mask, and in some cases a default gateway must be configured using an out of band connection or the
BootP protocol. The management option provides SNMP, RMON (4 groups: 1,2,3,9), and Web management for
system control and statistical monitoring.
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CUSTOMER RELEASE NOTES
FIRMWARE SPECIFICATION:
Status Version No. Type Release Date
Current Version 2.06.06.00 Customer Patch 4/30/2004
Prior Version 2.06.05.00 Customer Release 12/18/2003
Prior Version 2.05.19 Customer Patch 11/21/2003
Prior Version 2.05.09.01 Customer Patch 10/14/2003
Prior Version 2.05.09 Customer Patch 5/15/2003
Prior Version 2.05.02.42 Customer Patch 2/21/2003
Prior Version 2.05.02.31 Customer Patch 1/16/2003
HARDWARE COMPATIBILITY:
The ELS100-S24TX2M PHY chip has changed from Rev. 5208 to 5208R. If you are currently using hardware
Rev. "0F" or greater, It is necessary to use firmware version 2.01.04.01 or greater on the ELS100-SMGMT
module.
The VH-SMGMT2 module requires firmware release Version 02.05.02 or later. The version of firmware must be
installed on the module whether the module is used in a VH-2402S2 or a VH-2402S base unit. If the VH-SMGMT
module is used in the VH-2402 base unit it must be running version 02.05.02 or later. No restriction on the
VH-STACK or VH-STACK2 card is required.
BOOTPROM COMPATIBILITY:
ALL
NETWORK MANAGEMENT SOFTWARE SUPPORT:
NMS Platform Version No.
NetSight Atlas Console 1.3.0
NetSight Atlas Inventory Manager 1.4.0
If you install this image, you may not have control of all the latest features of this product until the next version(s)
of network management software. Please review the software release notes for your specific network
management platform for details.
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SUPPORTED FUNCTIONALITY:
Features Support
802.1p - Traffic Management Yes
802.1Q - VLAN tagging and identification (256 VLANs supported) Yes
802.1D - Spanning Tree support Yes
IGMP v1/v2 Snooping Yes
Address Data Base Maintenance Yes
Local Management via TELNET (four sessions) Yes
RMON Groups 1,2,3,9 Yes
Runtime Address Discovery Yes
Online BOOTP/TFTP Yes
TFTP download from a host Yes
Broadcast Suppression Yes
Trunking Yes
SNMP Yes
Modem support Yes
Embedded HTTP Agent Yes
Port Mirroring Yes
Auto-Negotiation Yes
Stacking Yes
Redundant power support (option) Yes
Configuration upload/download support Yes
Port Security (MAC Locking) Yes
INSTALLATION AND CONFIGURATION NOTES:
The VH-SMGMT2 is shipped pre-configured with the latest version of firmware, 2.05.09.01. If you would like to
upgrade an existing VH-SMGMT2 with this release, please follow the TFTP download instructions that are
included with your firmware image upgrade kit. TFTP download instructions are also available on the Enterasys
Networks Support web site at: http://www.enterasys.com/support/techtips/tk0020-9.html
FIRMWARE CHANGES AND ENHANCEMENTS:
The following known issues have been fixed in this release of firmware:
A condition where an HTTP packet with a source IP address the same as the switch IP address would cause
the switch to stop responding.
A condition where a negative length HTTP packet would cause the switch to stop responding.
A condition where a high rate of HTTP frames would cause SNMP failure to the switch.
A condition where a “negotiate authorization frame” would cause the switch to stop responding.

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Previous Firmware Release Information
The following known issues and enhancements made in the prior release of firmware are outlined below. Please
refer to the specific release notes of the firmware release for additional information.
Prior Release: 2.06.05
Added support for closed loop stacking up to seven units.
Added support for redundant management.
VH 2.6 Closed Loop and Redundant Management
1. VH 2.05.xx customers upgrading to open stack:
Customers running firmware revisions prior to 2.5.9.x must upgrade to 2.5.9.x before upgrading to
firmware revision 2.06.05 unless performing the upgrade as an Xmodem firmware upgrade.
2. VH 2.06.05 Closed Loop Stack:
Closed loop stacking requires the use of the closed loop cable (p/n VH-2402S-CBL). The cable is
available as a separate orderable item.
Closed loop stacking requires that one VH-STACK2 module exist in the stack.
Closed loop stacking requires one VH-2402S2 (2nd generation 24-port switch) in the stack with one
VH-STACK2 module configured in this unit.
3. VH 2.06.05 Closed Loop and Redundant Management:
Support for ‘redundant management’ requires the new management modules (VH-SMGMT2) and
firmware revision 2.06.05 or higher.
Stacking with redundant management modules requires the new management modules (VH-SMGMT2)
be running the same version 2.06.05 or higher firmware. The Primary module must be installed in a
VH-2402S2 base along with a VH-STACK2 module.
For proper stack operation, the VH-STACK2 module (within the same base units as the VH-SMGMT2
management modules) cannot be within the serial number range of:
02393107210A - 02394226210A
02361221210A - 02362526210A
02360221210A - 02361220210A
02405207210A - 02406098210A
If existing network installations are being upgraded, and VH-STACK2 modules are within this range,
please contact Enterasys Support to RMA the stack cards.
NOTE: Customers running VH 2.5 firmware will not experience problems with this serial number range
of VH-STACK2 modules.
KNOWN RESTRICTIONS AND LIMITATIONS:
When modifying Speed/Duplex and Flow Control parameters on more than 8 Ports within the Port Configuration
View, only the Speed/Duplex values will be saved after clicking on <OK> or <APPLY>.
When a VLAN is set to “Not in Service” and there is an Egress Port assigned to the VLAN traffic with that VLAN
tag, traffic is forwarded instead of being dropped.
Work-around: Within the “Bridge Settings” View, change the “VLAN Learning” parameter to IVL mode.
Note: This issue will occur with an agent Module in the same switch within the stack. A “Learning” Broadcast
packet will cause this event to happen.
Due to a Chip Limitation, the VH-2402S does not support "Admit Only VLAN-tagged frames."

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The Root Port Cost on a Trunk will change back to the Default Port Cost (i.e., 15) after a respan or a reboot of
the VH-2402S/VH-2402S2.
Under high broadcast loads, the VH-2402S/VH-2402S2 implements internal mechanisms to limit broadcast and
multicast traffic to the Management Agent. This filtering of traffic to the CPU may cause the CPU not to see the
IGMP streams for a group for which no “join” messages have been received. The outcome of this event is
flooding of the multicast stream until either a “Join” (or “Leave”) message is received or until the broadcast and
multicast traffic is reduced to a small enough level that the Management Agent can process all of them.
The VH-2402S2 Filtering Database supports up to 8,000 entries compared to the VH-2402S Filtering Database
which supports up to 12,000 entries due to internal chipset memory limitations. While the actual internal memory
is slightly smaller in the new chip because of the sparse hashing mechanism used, it is often possible to have
many more than 8000 table entries.
If a Static Router port is configured on a multi-port trunk (link aggregation group), it may not be saved following a
reboot of the VH-2402S/VH-2402S2. Note: Static Router ports on other ports are not lost after a reboot. This
issue will be fixed in a future release.
When VLANs are added in the Port Assignment VLAN Config View, they will not be saved following a reboot
until the CPU Agent has had time to place them in NV-RAM. After configuring the Ports with VLANs, wait 5
Minutes before rebooting the Switch.
EMAN 3.0 Java Chassis Manager works properly, but at times it may not properly “draw” the VH-2402S2 Stack.
Work-around:
1. Add the following line to the <install>/Resources/ChMgr.ini file under [ChMgrLayouts]
etsysOidDevVHx2402S2=7
2. Add the enterasys-oids-mib to the EMAN 3.0 MIB database.
While a TFTP configuration upload is being done, an image download of new firmware cannot be done at the
same time. The new firmware can be downloaded as soon as the TFTP configuration upload has finished.
When modifying Speed/Duplex and Flow Control parameters on more than 8 Ports within the Port Configuration
View, only the Speed/Duplex values will be saved after clicking on <OK> or <APPLY>.
Other Known Issues and Restrictions can be found in the VH-2402S v02.05.00 Release Notes. Any problems
other than those listed above should be reported to our Technical Support Staff.
COMPLIANCE SUPPORT:
Compliance Level Compliant
Year 2000 YES
IEEE STANDARDS SUPPORT:
Standard Title
IEEE 802.1D Transparent Bridging Specifications (ISO/IEC 10038)
IEEE 802.1p Traffic Class Expediting and Dynamic Multicast Filtering
IEEE 802.1Q Virtual Bridged Local Area Networks
IEEE 802.2 Local Area Networks, Logical Link Control (LLC)
IEEE 802.3 CSMA/CD 9 (ISO/IEC 8802-3)
IEEE 802.3I 10Base-T (ISO/IEC 8802-3, clause 14)
IEEE 802.3u 100Base-TX (ISO/IEC 8802-3, clause 25)
IEEE 802.3u 100Base-FX (ISO/IEC 8802-3, clause 26)
IEEE 802.3x Flow Control
IEEE 802.3z 1000Base-SX, 1000Base-LX

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IETF STANDARDS MIB SUPPORT:
RFC No. Article I. Title Groups Supported
1157 Simple Network Management
Protocol(SNMP)
1213 MIB-II System, Interfaces, IP, ICMP, UDP, Transmission
(dot3), and SNMP
1493 Bridge MIB Spanning Tree and various managed objects for
bridges
1573 Interfaces Evolution MIB MIB-II Interfaces Group extensions
1643 Ethernet-like Various Ethernet specific aspects
1757 RMON MIB Statistics, History, Alarm, and Event
2674 Definitions of Managed Objects for Bridges
with Traffic Classes, Multicast Filtering and
Virtual LAN Extensions
Groups in the P-BRIDGE MIB
-- -----------------------------------------------------
dot1dExtBase OBJECT IDENTIFIER ::= {
pBridgeMIBObjects 1 }
dot1dPriority OBJECT IDENTIFIER ::= {
pBridgeMIBObjects 2 }
Groups in the Q-BRIDGE MIB
-- ----------------------------------------------------
dot1qBase OBJECT IDENTIFIER ::= {
qBridgeMIBObjects 1 }
dot1qTp OBJECT IDENTIFIER ::= {
qBridgeMIBObjects 2 }
dot1qStatic OBJECT IDENTIFIER ::= {
qBridgeMIBObjects 3 }
dot1qVlan OBJECT IDENTIFIER ::= {
qBridgeMIBObjects 4 }
ENTERASYS PRIVATE ENTERPRISE MIB SUPPORT:
Title (i) Version
ELS100.MIB 01.00.00
Enterasys Private Enterprise MIBs are available in ASN.1 format from the Enterasys web site at:
http://www.Enterasys.com/support/mibs/. Indexed MIB documentation is also available.

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SNMP TRAP SUPPORT:
RFC No. Title
RFC 1215 coldStart_trap
warmStart_trap
linkUp_trap
authenticationFailure_trap
egpNeighborLoss_trap
RFC 1493 ENTERPRISE dot1dBridge
NewRoot 1
topologyChange 2
RFC 1573 SnmpTraps
linkDown 3
LinkUp 4
RFC 1757 IETF RMON, ENTERPRISE
rmon -- 1.3.6.1.2.1.16
risingAlarm 1
fallingAlarm 2
GLOBAL SUPPORT:
By Phone: [phone]
1-800-872-8440 (toll-free in U.S. and Canada)
For the Enterasys Networks Support toll-free number in your country:
http://www.enterasys.com/support/gtac-all.html
By Email: mailto: [e-mail]
By Web: http://www.enterasys.com/support
By Fax: [phone]
By Mail: Enterasys Networks, Inc.
35 Industrial Way
P.O. Box 5005
Rochester, NH 03866
For information regarding the latest software available, recent “release note” revisions, or if you require additional
assistance, please visit the Enterasys Networks Support web site.