Agilent Technologies N2620A - Manual (Page 217)

Network Performance Analyzer Reference 8
N2620A User’s Guide 199
Network Connection
Before the FrameScope Pro is connected to a network, it
constantly checks for a connection. When the FrameScope Pro
detects the network connection, it performs the following
actions.
• Listens for a link pulse or traffic to determine which cable
pairs are being used for transmitting and receiving data. If
this operation fails, an error appears while the FrameScope
Pro continues to listen for a link. This condition indicates
that the network device is not turned on, or the connection
from the FrameScope Pro to the device is faulty.
• Autonegotiates wire speed and mode (optional). You can
manually set the speed and mode (half duplex or full duplex)
via the Test Port Settings wizard. The wire speed and mode
are displayed on the network map on the Main Menu screen
and Test Port Settings screen.
• Uses the DHCP to obtain the following (optional) parameters.
• IP address
• IP subnet mask
• Default gateway
• DNS server
• NetBIOS node type
• NetBIOS name server (WINS)
You can manually set these parameters via the Test Port
Settings wizard. These parameters are displayed on the Test
Port Settings screen. An error appears if the DHCP fails,
prompting the DHCP to retry the process. The DHCP may fail
if the DHCP server is not accessible from the FrameScope
Pro connection point or if the DHCP server security is
configured to deny access to unknown devices.
• Test the default gateway and the DNS and WINS servers. An
error is reported to the Error Log if any of these devices is
not working. The default gateway is tested by ARPing for its
MAC address. The DNS and WINS servers are tested by
looking up the FrameScope Pro host name.
When these actions have completed, the FrameScope Pro is
ready to monitor the network and perform network testing.