7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
System Management
3HE 17358 AAAB TQZZA © 2021 Nokia.
Use subject to Terms available at: www.nokia.com
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Notes:
1. Supported only in the standalone mode of operation
2. Supported only on IMM (IMMv1) and IMM-b cards
3. Supported only on IMM-b card
Unicast IP sessions support two types of peers: configured and discovered. The
7210 SAS operating as an ordinary clock slave 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, slaves).
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 26); 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.
Table 34 IP/UDP Unicast and Ethernet Multicast Support
Platform IP/UDP Unicast Ethernet Multicast
7210 SAS-M Yes Yes
7210 SAS-T Yes Yes
7210 SAS-Mxp Yes Yes
7210 SAS-Sx 1/10GE Yes
Yes
1
7210 SAS-S 1/10GE No No
7210 SAS-Sx 10/100GE No No
7210 SAS-R6 Yes
Yes
2
7210 SAS-R12 Yes
Yes
3
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