Nokia 7210 SAS-M Configuration Guide

Ethernet Ring Commands
Page 234 7210 SAS M, T, X, R6, R12, Mxp, S, Sx Interface Configuration Guide
This command enables the usage of the CC state by the Ethernet ring for consideration in the protection
algorithm. The use of control-mep command is recommended if fast failure detection is required, especially
when Link Layer OAM does not provide the required detection time.
The no form of this command disables the use of the CC state by the Ethernet ring.
Default no control-mep
control-sap-tag
Syntax control-sap-tag tag-range
no control-sap-tag
Context config>eth-ring>path>eth-cfm>mep
Description Platforms Supported: 7210 SAS-T, 7210 SAS-X, 7210 SAS-Sx/S 1/10GE, 7210 SAS-Sx 10/100GE, 7210
SAS-Mxp, 7210 SAS-R6 and 7210 SAS-R12.
To support sub-second CCM timers in hardware for G.8032 MEPs, user needs to reserve a VLAN tag value
for exclusive use by G.8032 MEPs configured for a particular ring port (for the MEP configured under the
path command). This command allows the user to tell the system which VLAN tag is reserved for use with
this G.8032 MEP. This value can be the same one as configured with raps-tag value. Use of this command
turns on use of sub-second CCM timers for this MEP. The system checks that the configured value is not in
use by any SAP (as a SAP tag) configured on the port and not in use as a control-sap-tag by any other
G.8032 instance on that port. Maximum of four hardware based control MEPs can be configured on a port.
The VLAN should be reserved for all port encapsulation type. In other words, NULL encapsulated port,
Dot1q encapsulated port, and QinQ encapsulated ports that need to use G.8032 MEPs with sub-second CCM
timers need to reserve a VLAN for use. Every G.8032 instance configured for the port, needs a VLAN value
reserved for its use. Each G.8032 ring instance must use a different VLAN value, not in use currently by any
other G.8032 instance on the same port.
Notes:
• User needs to ensure that the VLAN value specified as control-sap-tag must not be received as the out-
ermost VLAN tag on any of the SAPs in use on the same port. For example, if control-sap-tag is config-
ured as 550, then any SAP (NULL, dot1q, dot1q Default SAP, Q1.Q2 SAP, Q1.* SAP) configured on
the port cannot receive any CFM packet that matches the VLAN tag 550.
• Configuration of control-sap-tag is interoperable with other devices. This is an internal tag used for pro-
cessing CCMs in the fastpath. This tag is not sent on the wire.
The no form of the command reverts the ring port to use the raps-tag configured for the path and use of
1second CCM timers.
Parameters tag-range — Specifies the tag range.
Values 512 to 768 — 7210 SAS-X (100 ms CCM timer support)
512 to 768 — 7210 SAS-T in network mode (100 ms CCM timer support)
512 to 768 — 7210 SAS-Mxp (10 ms and 100 ms CCM timer support)
512 to 768 — 7210 SAS-Sx/S (10 ms and 100 ms CCM timer support; control-sap-tag
range must be mentioned under resource profile)
3000 to 3512 — 7210 SAS-R6 and 7210 SAS-R12 (10 ms and 100 ms CCM timer
support, control-sap-tag range must be mentioned under resource profile)

Nokia 7210 SAS-M Specifications

General

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