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without qos configured

If a 3550/3750 switch is not qos enabled and IP phone connects to it. How does it happen when packets arrive on the outbound interface to wan(dot1q between them):

1. dscp reserved?

2. how about cos? since no qos enabled, switch won't look at the default dscp-cos map. Will the cos be reserved or 0? Thanks

1 REPLY
Silver

Re: without qos configured

Hi,

The default egress queuing is FIFO. If the packets are marked by the IP phone it will be carried over intact. The CoS will be 0 out trunk interface.

Krisztian

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