it network audit

In such cases, it is important to recognize that it network audit traffic, by default, is marked to IP Precedence 5 (DSCP CS5). This default marking could interfere with VoIP provisioning because both DSCP EF and DSCP CS5 share the same IP Precedence, 802.1Q/p CoS, and MPLS EXP value (of 5). Therefore, it is recommended to re-mark DLSw+ traffic away from this default value of IP Precedence 5

To explain this behavior from a historical perspective, when DLSw+ was developed, ToS was a term loosely used to refer to the first 3 bits (the IP Precedence bits) of the IP ToS byte, as defined in RFC 791. For many years, these were typically the only bits of the ToS byte in use (the others almost always were set to 0), so it seemed to make sense at it network audit