Ethernet Port Commands
Page 166 7210 SAS M, T, X, R6, R12, Mxp Interface Configuration
Guide
management intervention in this process. Once this process is complete, the master port’s transmit clock will
be used for receiving the packets on the slave port. However, when syncE is in use, to maintain clock
distribution hierarchy (for example, master will be synchronized to a stable reference and will distribute this
clock to the slave) one needs to make sure that one of the ports behave as a master while the remote port of
the ink in question behaves as a slave.
This command allows the user to force the copper port to be a master or slave. Using a value of master,
ensures that the local node is the syncE master. A syncE master port, distributes the system timing over the
copper port to the remote peer node. Using a value of slave, ensures that the local node is a syncE slave. A
syncE slave port uses the incoming timing information.
The no form of the command allows the node to automatically determine the master or slave status for the
copper port based on the nodes capabilities exchanged during auto-negotiation. In other words, depending
on the peer setting, the local end could end up as either a master or a slave when the no form of the command
is used.
Note:
The following conditions must be met before using syncE on the fixed port copper ports:
1. Auto-negotiation (or auto-negotiation limited) must be turned on.
2. This command is required only when the copper port speed is set to 1Gbps.
3. This CLI command is not supported for fiber ports or for fiber ports that use Copper SFPs.
Parameters master — This option ensures that the local node is the synchronous Ethernet master. A synchronous
Ethernet master port, distributes the system timing over the copper port to the remote peer node.
slave — This option ensures that the local node is a synchronous Ethernet slave. A synchronous Ethernet
slave port uses the incoming timing information.
speed
Syntax speed {10 | 100 | 1000}
Context config>port>ethernet
Description This command configures the port speed of a Fast Ethernet port when autonegotiation is disabled. If the port
is configured to autonegotiate this parameter is ignored. Speed cannot be configured for ports that are part of
a Link Aggregation Group (LAG).
Default 100
Parameters 10 — Sets the link to 10 mbps speed.
100 — Sets the link to 100 mbps speed.
1000 — Sets the link to 1000 mbps speed.
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