Can the Catalyst 2950 series switches mark or rewrite IP precedence (type of service [ToS]) bits in an IP packet?
A. Yes, the Catalyst 2950 series switches that run the enhanced image (EI) can mark or rewrite ToS bits in the header of an IP version 4 (IPv4) packet. Use a policy map that contains the set ip dscp statement. Or configure a policer to mark down or rewrite the differentiated services code point (DSCP) value on frames that do not conform to the rules in the policer. Note: The Catalyst 2950 only supports ingress policing.
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