Enterasys Networks X-PeditionTM manual Create an Owner, Via CLI, Via Snmp

Network Management through SNMP

Latency (network delay) is measured with the formula: D(i)=(Ri-Si), which is the round-trip interval between sending and receiving the ICMP packet triggered by the initiator and echoed back by the target.

Jitter (network delay variation) is the value between packets i and j as figured by the formula: D(i,j)=(Rj-Ri)-(Sj-Si).Since the XSR measures the round trip, Ri indicates the receive interval at the source instead of the target.

Packet loss - If an ICMP echo reply packet is not received within a specified time, it is considered lost. This does not allow the operator to identify whether the packet is lost on the way to the target or when the response is traveled from the target back to the sender.

Configuration Examples

The following CLI and SNMP examples illustrate how to create: an owner, a measurement to ping, schedule a measurement, and query a measurement.

Create an Owner

The XSR provides a default owner monitor residing in the first row of the owner table. If you want to create another RTR owner, follow the instructions below.

Via CLI

The following example creates the user Clem:

XSR(config)#rtr owner Clem

Via SNMP

The example below creates a user in row 2 of the table (the instance is 2 as indicated in bold):

1.Create a row (etsysSrvcLvlOwnersStatus):

1.3.6.1.4.1.5624.1.2.39.1.2.1.1.9.2 = 5 (createAndWait)

2.Configure user (etsysSrvcLvlOwnersOwner):

1.3.6.1.4.1.5624.1.2.39.1.2.1.1.2.2 = userA

3.Change the row status to active (etsysSrvcLvlOwnersStatus):

1.3.6.1.4.1.5624.1.2.39.1.2.1.1.9.2 = 1 (active)

Note: The string userA is equivalent to the ASCII value 117:115:101:114:65, which will be used to index into the aggregate measure table. If you want to use the default owner, the ASCII value of the default owner (monitor) is 109:111:110:105:116:111:114.

Refer to “Standard ASCII Character Table” on page A-19for more information. With NetSight Atlas MIB Tools, retrieve the ASCII value from the Raw Value column, as shown in Figure 2-4.

Figure 2-4 NetSight Atlas MIB Tools Screen

Create a Measurement to Ping

Via CLI

The following example adds a ping measurement to IP address 1.1.1.1:

XSR(config)#rtr 1

XSR(config-rtr-echo-1)#type echo protocol ipIcmpEcho 1.1.1.1

XSR User’s Guide 2-41