Enterasys Networks 2.2.1 - Manual

1-1 Chapter 1 Introduction How to use this guide; related guides; useful definitions; software conventions; getting help Welcome to the Generic SNMP User ’s Guide. This guide is a reference for using NetSight Element Manager to manage and control any SNMP-compliant devices on your network. Using the...

Introduction 1-2 Related Manuals Chapter 7, Using the IP Routing Table Window , discusses the IP Routing Table and how to route data through your network. Chapter 8, Using the Net to Media Table , discusses the IP Address Translation Table used for mapping IP addresses to physical addresses for IP d...

Introduction 1-6 Software Conventions Subnet A physical network within the IP network. Subnet mask A 32-bit quantity (four binary octets) that filters a destination IP address to determine whether it exists on the source IP’s subnetwork and therefore can be reached directly, or must be forwarded thr...

Software Conventions 1-7 Introduction Using the Mouse This document assumes you are using a Windows-compatible mouse with two buttons; if you are using a three-button mouse, you should ignore the operation of the middle button when following procedures in this document. Procedures within the NetSigh...

Introduction 1-8 Software Conventions • Dragging means to move the mouse pointer across the screen while holding the mouse button down. It is often used for drag-and-drop operations to copy information from one window of the screen into another, and to highlight editable text. Common Generic SNMP Wi...

Getting Help 1-9 Introduction An OK, Set, or Apply button appears in windows that have configurable values; it allows you to confirm and SET changes you have made to those values. In some windows, you may have to use this button to confirm each individual set; in other windows, you can set several v...

Introduction 1-10 Getting Help Getting Help from the Global Technical Assistance Center If you need technical support related to NetSight Element Manager, contact the Global Technical Assistance Center via one of the following methods: By phone: (603) 332-940024 hours a day, 365 days a year By fax: ...

2-1 Chapter 2 System Group The System Group window; using the Other Groups menu The System Group window provides basic information about the type of device currently being monitored, including the System Object ID and Uptime, as well as administrative information, including the device’s name, locati...

System Group 2-2 Modifying the System Group Administrative Fields The System Group window displays the following fields: Object ID Displays the unique identifier of the device being managed. This value is allocated within the SMI enterprises subtree (1.3.6.1.4.1). Uptime Displays the amount of time ...

Modifying the System Group Administrative Fields 2-3 System Group Figure 2-3. Contact Text Box b. Type in the new contact information in the text box; then click on OK. 2. To modify the Name field: a. Click the I-bar cursor ( ) to the right of the Name field. The Name text box opens, Figure 2-4 . Fi...

3-1 Chapter 3 Viewing the Interface Group Viewing interface statistics; using the Admin/Status option and the Last Change field The Interface Group window displays statistics for each interface on the device. The port type is displayed for each interface along with the statistics associated with tha...

3-3 Viewing the Interface Group Last Change The Last Change field (bottom of the window) displays the date and the time since the system was last reinitialized. Viewing Statistics The following statistics are collected from received and transmitted packets. Unicast The number of subnetwork unicast (...

Viewing the Interface Group 3-4 Unknown Protocol (Received Packets only) The number of packets received via the interface which were discarded because of an unknown or unsupported protocol, according to the ifInUnknownProtos. Transmit Queue Size (Transmitted Packets only) The length of the output pa...

4-1 Chapter 4 Using the Address Translation Table The Address Translation Table window; editing the Address Translation Table The Address Translation Table utilizes ARP (Address Resolution Protocol) to translate IP addresses into Physical addresses. ARP is used to achieve mapping between IP addresse...

4-3 Using the Address Translation Table Editing the Address Translation Table You can modify existing entries in, or add new entries to the Address Translation Table. Modifying Entries in the Address Translation Table By modifying an entry in the Address Translation Table you will change the mapping...

5-1 Chapter 5 Viewing IP Group Statistics The IP Group window; using the Time To Live option The Internet Protocol (IP) is the protocol used in the Internet layer. Each IP datagram contains identifying information such as the datagram’s originator, the datagram’s length, the format used (version), a...

5-5 Viewing IP Group Statistics Setting the Time To Live Option When a device transmits an IP datagram, it sets the amount of time, in seconds, the datagram is allowed to exist, by setting the Time-To-Live (TTL) field located in the datagram’s header. This eliminates the possibility that a datagram ...

6-1 Chapter 6 Viewing the IP Address Table The IP Address Table window The IP Address Table displays the IP Addresses and the subnet masks for each of the device’s interfaces. In addition, you can see whether network broadcasts will be sent with 1s or 0s in the host portion of the IP Address, and th...

7-1 Chapter 7 Using the IP Routing Table Window IP Routing Table window; modifying the routing information; The IP Routing Table provides a way for devices to exchange data. Your local IP device must determine the next “hop” or stop on the data route. If the destination is on the same IP network, th...

7-5 Using the IP Routing Table Window Modifying Entries in the IP Routing Table 1. Click in the Destination field, enter the desired destination IP address. 2. Click in the Next Hop field, enter the IP address that you want to specify as the next hop of the route. 3. Click in the Route Metrics field...

8-1 Chapter 8 Using the Net to Media Table The Net To Media Table window; modifying an entry The Net to Media Table is used by MIB-II devices to map IP addresses to physical addresses when transmitting an IP datagram for devices on each network segment directly connected to the monitored device. The...

Using the Net to Media Table 8-2 The display panel (top section) of the Net to Media Table displays address information for the associated interface. The Values set for section lets you modify entries in the display panel and make static entries to the ARP cache. Interface Index The interface on whi...

9-1 Chapter 9 Viewing ICMP Group Statistics The ICMP Group window ICMP (Internet Control Message Protocol) is the Internet Protocol mechanism used by network devices to determine if a destination is reachable and to notify other devices about delivery problems. Using PING (Packet Internet Groper), a...

10-1 Chapter 10 Viewing TCP Group Information The TCP Group window The Transmission Control Protocol (TCP) is often called reliable stream transport service because it is based on a connection between two nodes. Like IP, TCP’s purpose is to transfer data between applications. TCP segments, the basic...

11-1 Chapter 11 Viewing UDP Group Information The UDP Group window The User Datagram Protocol (UDP) is the piece of the TCP/IP protocol suite that deals with getting a datagram from an application running on one host to an application running on a different host. UDP is able to choose the correct pr...

12-1 Chapter 12 Viewing EGP Group Information The EGP Group window; displaying the EGP Group Neighbor Table Detail window ; using the Event Trigger button The Exterior Gateway Protocol (EGP) controls how gateways on neighboring autonomous systems exchange routing information; it tells an IP network ...

Displaying the EGP Group Neighbor Table Detail Window 12-5 Viewing EGP Group Information Hello The interval between EGP Hello command retransmissions (in hundredths of a second), according to egpNeighIntervalHello. This represents the t1 timer as defined in RFC 904. The t1 timer controls Request (in...

13-1 Chapter 13 Viewing SNMP Group Information The SNMP Group window; disabling and enabling authentication failure traps The Simple Network Management Protocol (SNMP) facilitates communication between a management application, like NetSight Element Manager, and a network device, through the use of ...

Viewing SNMP Group Information 13-6 Total Get-Next PDUs The total number of SNMP Get-Next PDUs which have been generated by the SNMP protocol entity, according to the snmpOutGetNexts. Total Set-Request PDUs The total number of SNMP Set-Request PDUs which have been generated by the SNMP protocol enti...

Index-1 Index A Active open 1-3Active Opens 10-3Address 3-2, 12-2, 12-4Address Errors 5-2Address mask 1-3Address Mask Reply 9-4, 9-6Address Mask Request 9-4, 9-5Address Resolution Protocol (ARP) 1-3Address Translation Table 4-1 adding entries 4-3editing 4-3 Admin Status 3-4 setting the Admin Status ...