7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
System management
Platform IP/UDP Unicast Ethernet Multicast
7210 SAS-S 1/10GE No No
7210 SAS-Sx 10/
100GE
26
No
Yes
25
7210 SAS-R6 Yes
Yes
27
7210 SAS-R12 Yes
Yes
27
Unicast IP sessions support two types of peers: configured and discovered. The 7210 SAS operating as
an ordinary clock timeReceiver or as a boundary clock must have configured peers for each PTP neighbor
clock from which it might accept synchronization information. The 7210 SAS initiates unicast sessions with
all configured peers. A 7210 SAS operating as a boundary clock accepts unicast session requests from
external peers. If the peer is not configured, it is considered a discovered peer. The 7210 SAS can deliver
synchronization information toward discovered peers (that is, timeReceivers).
For Ethernet multicast operation, the node listens for and transmits PTP messages using the configured
multicast MAC address. Neighbor clocks are discovered via messages received through an enabled
Ethernet port. The 7210 SAS supports only one neighbor PTP clock connecting into a single port
(see Figure 24: Ethernet multicast ports); multiple PTP clocks connecting through a single port are
not supported. This might be encountered with the deployment of an Ethernet multicast LAN segment
between the 7210 SAS and the neighbor PTP ports using an end-to-end transparent clock or an Ethernet
switch. The use of an Ethernet switch is not recommended because of PDV and potential performance
degradation, but it can be used if appropriate for the application.
The 7210 SAS does not allow simultaneous PTP operations using both unicast IPv4 and Ethernet
multicast. A change of profile to G.8275.1 or from G.8275.1 to another profile requires a reboot of the node.
The following figure shows one neighbor PTP clock connecting into a single port.
25
Supported only in the standalone mode of operation
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Supported only on 7210 SAS-Sx 10/100GE 64SFP+ 4QSFP28 variant
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Supported only on IMM-b card
3HE 18197 AAAB TQZZA
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Use subject to Terms available at: www.nokia.com/terms/.
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