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Directing Messages to a Remote Destination from the Routing Matrix Based on a TX Matrix Plus Router

You can configure a routing matrix composed of a TX Matrix Plus router and T1600 routers to direct system logging messages to a remote machine or the other Routing Engine on each routing router, just as on a single-chassis system. Include the host statement at the [edit system syslog] hierarchy level on the TX Matrix Plus router:

[edit system syslog]host (hostname | other-routing-engine) {facility severity;explicit-priority;facility-override facility;log-prefix string;match "regular-expression";}source-address source-address;

The TX Matrix Plus router directs messages to a remote machine or the other Routing Engine in the same way as a single-chassis system, and the optional statements (explicit-priority, facility-override, log-prefix, match, and source-address) also have the same effect as on a single-chassis system. For more information, see Directing System Log Messages to a Remote Machine or the Other Routing Engine.

For the TX Matrix Plus router to include priority information when it directs messages that originated on a T1600 router to the remote destination, you must also include the explicit-priority statement at the [edit system syslog host sfc0-master] hierarchy level.

The other-routing-engine statement does not interact with message forwarding from the T1600 routers to the TX Matrix Plus router. For example, if you include the statement in the configuration for the Routing Engine in slot 0 (re0), the re0 Routing Engine on each T1600 router sends messages to the re1 Routing Engine on its router only. It does not also send messages directly to the re1 Routing Engine on the TX Matrix Plus router.

Because the configuration on the TX Matrix Plus router applies to the T1600 routers, any T1600 router that has interfaces for direct access to the Internet also directs messages to the remote machine. The consequences include the following:

  • If the T1600 routers are configured to forward messages to the TX Matrix Plus router (as in the default configuration), the remote machine receives two copies of some messages: one directly from the T1600 router and the other from the TX Matrix Plus router. Which messages are duplicated depends on whether the severities are the same for local logging and for forwarded messages. For more information, see Configuring Message Forwarding to the TX Matrix Plus Router.
  • If the source-address statement is configured at the [edit system syslog] hierarchy level, all routers in the routing matrix report the same source address in messages directed to the remote machine. This is appropriate, because the routing matrix functions as a single routing router.
  • If the log-prefix statement is included, the messages from all routers in the routing matrix include the same text string. You cannot use the string to distinguish between the routers in the routing matrix.

Published: 2010-04-26

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