Port Control Tab

Selecting the Port Control tab will open a screen as shown in Fig. 4.28.

Fig. 4.28 Port Control tab launched.

Port Control From the Port Control section three port modes are available: Monitor/

Generate, Pass through and Reflector mode. These modes reflect the physical setup.

The Port Control screen will have various looks depending upon the se-lected port control type.

The dynamic diagram at the Port Control screen will show the current link status of the line and the resolved speed and duplex settings for both ports as depicted below. For a more thoroughly live status of the ports see section 4.47, Status > Ethernet Interface.

Monitor/Generate mode

This mode is typically used for out-of-service and performance testing. It is possible to perform a passive, unintrusive monitoring or at the same time transmit test data, which could be reflected for further evaluation and testing of the network (as illustrated below).

Selecting the Port Control tab and selecting Monitor/Generate mode will open a screen like the one shown in Fig. 4.29.

Fig. 4.29 Monitor/Generate selected in Port Control.

See Port A/B on page 4-36 for general setup of Port A and Port B.

4.8 Interface > Ethernet

If the Multistream option is installed and active the Port Control screen will look as shown in Fig. 4.30.

Fig. 4.30 Port Control screen with multistream shown.

The Multistream option will allow 8 streams to be transmitted and re-ceived instead of the default one (stream 1).

Pass through mode

This mode enables non-intrusive in-service monitoring for both fast trou-bleshooting and detailed analysis of the live traffic on a network. All traffic received on a port is forwarded on the other and vice versa. Traffic be-tween the two network DUT elements is monitored as illustrated below.

Selecting the Port Control tab and selecting Pass Through mode will open a screen like the one shown in Fig. 4.31.

Fig. 4.31 Pass through selected.

See Port A/B on page 4-36 for general setup of Port A and Port B.

If the Synchronous Ethernet option is installed the active Port Control screen will look as shown in Fig. 4.32

Fig. 4.32 Port control pass through

4.8 Interface > Ethernet

SyncE can be enabled to allow the change of quality level reported in the passing ESMC messages and/or capture of ESMC messages in both di-rections.

Modify QL/SSM

Change the quality level reported in the passing ESMC messages on the fly. Choose the reported quality level in the select boxes.

ESMC capture

A check in the ESMC capture box enables capture of ESMC messages.

The captured messages are stored as part of a measurement and can subsequently be exported to a PCAP file compatible with Wireshark us-ing the FrontSim option (version 1.13 or newer).

IEEE 1588v2 Enable

A check in the Enable box enables update of the correction field in appli-cable PTP messages according to the chosen domain.

PTP capture

A check in the PTP capture box enables capture of PTP messages for the domain chosen in the Domain select box. The captured messages are stored as part of a measurement and can subsequently be exported to a PCAP file compatible with Wireshark using the FrontSim option (ver-sion 1.13 or newer).

Ext. log

A check in the Ext. log box enables that received and transmitted PTP messages are also written to the IEEE 1588 event log.

Domain

Select which domain to capture from, if capture is enabled. Statistics will also only be measured for the selected domain.

Reflector mode

In this mode CMA 3000 loops incoming traffic on a port swapping MAC and/or IP-addresses as illustrated in Fig. 4.33.

HDX is not possible in ‘Reflector’ mode.

Fig. 4.33 Reflector mode selected.

See Port A/B on page 4-36 for general setup of Port A and Port B.

MAC Swapping Control

When Swap All MAC addresses is selected CMA 3000 transmits/reflects all received frames with swapped MAC addresses as opposed to when Swap Specific MAC address is selected where only the specified MAC address is swapped and reflected.

The IP addresses and ports may also be swapped inside the reflected frames. Additionally the ACK flag may be forced set inside reflected TCP frames.

Port A/B From the Port A or Port B drop-down menu it is possible to select be-tween two menu types; a ‘quick’ mode and an ‘advanced’ mode. Please observe that the available choices are dependable on the installed Eth-ernet type.

Fig. 4.34 Selecting either quick or advanced setup menu.

Pressing the ‘arrow’ opens a quick menu as shown in Fig. 4.35.

Quick port setup

Advanced port setup

Electrical/optical port indicator Current auto negotiated speeds (rows) and duplex (columns), HDX to the right

4.8 Interface > Ethernet

Fig. 4.35 Quick setup menu launched.

The available choices in the Quick Port Setup are dependent on the in-stalled Ethernet option.

Pressing the ‘advanced key’ opens a pop-up menu containing 3 softkeys launching a different menu each. See examples in Fig. 4.36.

Port Mode Selecting the [Off] softkey will shut down the Ethernet port and stop the physical link.

Selecting the [Auto negotiate] softkey launches the menu shown in Fig.

4.36.

Selecting the [Forced] softkey launches the menu shown in Fig. 4.37.

Autonegotiate

The Autonegotiate menu shown to the left will be launched with the 10/

100 Ethernet option installed and the Autonegotiate menu shown to the right will be launched with the Ethernet 10/100/1000 interface option or the High Speed Interface option installed.

Fig. 4.36 The two Advanced Setup menus.

Auto Negotiation Advertisement

From the Auto Negotiation Advertisement field it is possible to set:

FDX to 10, 100 and 1000*) HDX to 10, 100

*) Available and selectable when Ethernet 10/100/1000 interface or High Speed Interface option is installed. These are the speed and duplex ca-pabilities that are advertised to the link partner.

Using the [Select All] softkey will automatically set check marks in every checkbox.

1000 Mbps Specif-ic Advertisement

From the Clock field a drop-down menu will launch the following settings:

Prefer Master, Prefer Slave, Master or Slave

Flow Control Enabling the ‘Respond to PAUSE frames’ field will force the transmitter to pause a short period of time in case a pause frame (defined in IEEE 802.3x) is received, e.g. in case of congestion of the foreign receiv-er.

Forced

4.8 Interface > Ethernet

Fig. 4.37 The ‘Forced’ setup launched.

Forced Mode Se-lection

Selection of forced mode speed and duplex. Available choices are:

10 Mbps HDX, 10 Mbps FDX, 100 Mbps HDX, 100 Mbps FDX and 1000 Mbps*).

*) Available and selectable when the Ethernet 10/100/1000 Interface or the High Speed Interface option is installed.

When autonegotiating with a port that is forced (i.e. not using autonego-tiation), the duplex will automatically be set to Half Duplex (HDX) and the speed to the speed used by the forced port for the port that is using au-tonegotiation. It is thus possible to have a duplex mismatch without knowing it.

Auto Detect Auto Detect can be used to discover the speed and duplex capabilities of the link partner with different forced mode speed and duplex settings.

When autonegotiating with a port that is forced (i.e. not using autonego-tiation), the duplex will automatically be set to Half Duplex (HDX) and the speed to the speed used by the forced port for the port that is using au-tonegotiation, so typically a NIC with capabilities with Full Duplex (FDX) capabilities will show to be able to handle both HDX and FDX.

Pressing the [Run Auto Detect] softkey starts this detection while dis-playing status. An example is shown in Fig. 4.38.

Fig. 4.38 The ‘Auto Detect’ running.

This next section describing the ‘Optical’ tab available in the ‘Port Setup’

is only relevant when the Ethernet 10/100/1000 Interface or the High Speed Interface option is installed.

Fig. 4.39 Optical Setup launched.

The forced function under the ‘Optical’ tab is useful when there is a need for measuring on equipment that not support ‘Autonegotiating’. Then the fixed ‘Optical Forced 1000 Mbps FDX’ can be convenient.

4.8 Interface > Ethernet

This section is only relevant if the High Speed Interface option and the 10 GigE WAN are installed. When running 10G only Forced mode is available.

Fig. 4.40 Optical Setup menu.

Enable WAN Enable insertion of the WAN Interface Sublayer (WIS).

Test Mode Enable and control the WIS test-pattern generator and checker

• Off (default)

• Square Wave

• Mixed Frequency

• PRBS 31

Start/Stop Traffic Generator

Pressing the [Start Traffic Generator] softkey starts the generation of traffic on the respective port with the current transmitter settings, selecta-ble under the Frame Content and Traffic folders under the Port A setup and Port B setup.

To stop the generation of traffic, press the [Stop Traffic Generator]

softkey.

The Start key will turn into a Stop key after transmitting activation and dis-plays progress of the transmission below the text if applicable.

As depicted in Fig. 4.29 there is stated some essential information about the transmitter setup above the [Start Traffic Generator] softkey.

If an optional 100 Mbit (optical) SFP module is installed, different setup settings will be available than those shown in the previous and in the fol-lowing sections.

4.8 Interface > Ethernet