Nokia 7210 SAS-M User Manual

System Management
282
7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
3HE 16132 AAAB TQZZA Edition: 01
For unicast IP sessions, there are 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 will accept unicast
session requests from external peers. If the peer is not a configured peer, 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 the
reception of messages 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 the potential degradation of performance, 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.
Figure 26 shows one neighbor PTP clock connecting into a single port.
Table 34 IP/UDP Unicast and Ethernet Multicast Support
Platform IP/UDP Unicast Ethernet Multicast
7210 SAS-M Yes Yes
7210 SAS-T Yes No
7210 SAS-Mxp Yes Yes
7210 SAS-Sx 1/10GE Yes No
7210 SAS-S 1/10GE No No
7210 SAS-Sx 10/100GE No No
7210 SAS-R6 Yes Yes (IMM (a.k.a. IMMv1) and IMM-b
card only)
7210 SAS-R12 Yes Yes (IMM-b card only)

Nokia 7210 SAS-M Specifications

General

Brand	Nokia
Model	7210 SAS-M
Category	Cell Phone
Language	English