Calnex Sentinel - Page 34

Using Sentinel
CX3001 v7.0 © Calnex Solutions 34
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Monitor Mode
Monitor Mode is selected via the Mode page as earlier described. When this is mode is selected a new tab,
Monitored Channels, will be available in the Settings pages.
All parameters on this page correspond to PDV measurement performed in Monitor Mode.
Note: An external network Test Access Point (TAP) or optical splitter is needed to be able to measure PDV in
Monitor Mode.
When operating in Monitor Mode, Sentinel “sniffs” for PTP or NTP packets between two nodes. By monitoring
the traffic between the two nodes available via the TAP, Sentinel can measure PDV between channels.
Protocol Level
Protocol level for PTP measurement: UDP/IPv4 , UDP/IPv6 or Ethernet ;
Normalize delays
When On PDV samples are relative to first delay sample so that first PDV sample has zero
value;
When Off true Fwd/Rev/PD delays are shown;
Include correction field
Allows the correction field to be included in the PDV measurement; default enabled
Network Mask Limit
Value of TE mask
Discover…
Allows auto-fill of setting fields below based on network traffic analysis and auto-detection
of all possible nodes which could be used for measuring PDV in monitor mode. See
detailed description below.
VLAN (802.1Q)
Specifies if VLAN packets are captured;
VLAN ID
Specifies VLAN identifier when VLAN packets capturing is enabled. See VLAN (802.1Q)
setting
Monitored domain
PTP domain which is monitored; This setting is not available for NTP protocol.
Monitored mode
Specifies which type of traffic is monitored: Unicast or Multicast . This setting is not
available for NTP protocol.
Monitored Master IP
Monitored Slave IP
IP addresses of two PTP or NTP nodes which are monitored. This setting is not available
for Ethernet protocol level.
Monitored Master MAC
Monitored Slave MAC
MAC addresses of two PTP nodes which are monitored. This setting is not available for
NTP protocol or UDP/IP protocol level.