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[SRX] Meaning of error message "L2ALM: trying master connection"

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Article ID: KB29212 KB Last Updated: 26 Mar 2015Version: 2.0
Summary:

This article explains the meaning of the following error message:

L2ALM: trying master connection.
Symptoms:

The following message appears regularly in an SRX device running Layer 3 mode, with or without chassis cluster configured:

lab@srx650b> show log messages | match L2   
Jan  4 21:32:01  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1380000
Jan  4 22:56:28  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1385000
Jan  5 00:20:54  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1390000
Jan  5 01:45:21  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1395000
Jan  5 03:09:49  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1400000
Jan  5 04:34:16  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1405000
Jan  5 05:58:42  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1410000
Jan  5 07:23:08  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1415000
Jan  5 08:47:35  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1420000
Jan  5 10:12:01  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1425000
Jan  5 11:36:28  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1430000
Jan  5 13:00:55  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1435000
Jan  5 14:25:21  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1440000
Jan  5 15:49:48  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1445000
Jan  5 17:14:15  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1450000
Jan  5 18:38:42  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1455000
Jan  5 20:03:08  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1460000
Jan  5 21:27:34  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1465000
Jan  5 22:52:00  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1470000
Jan  6 00:16:27  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1475000
Jan  6 01:40:53  srx650b srx650b L2ALM: trying master connection, status 61, attempt 1480000
Cause:

The L2ALM (Layer 2 Address Learning Manager) thread in the Packet Forwarding Engine (PFE) attempts to make a connection to the Layer 2 Address Learning Daemon (L2ALD) on the Routing Engine. The L2ALM thread in the PFE is not used until Layer 2 (Transparent) mode is configured; then the L2ALD on the Routing Engine refuses the connection from the L2ALM.

Solution:

If the SRX device is configured with Layer 3 mode, this message is harmless; however, it could be an issue if this happens in an SRX configured with Layer 2 (Transparent) mode.  Please work with your support provider for further investigation if this message appears in Layer 2 mode.

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