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QoS Pre-Classify vs LT2P IP ToS Reflect

From what I've read about these two commands I can't see any difference (in a L2TP environment anyway).

Both will copy the PPP payload ToS byte to the L2TP header ToS byte where it can be used by outbound service policies.

Is there any fundamental difference between them? Is one better than the other in anyway?

Thank you,

Richard Watson

1 REPLY
Silver

Re: QoS Pre-Classify vs LT2P IP ToS Reflect

The qos pre-classify command is restricted to tunnel interfaces, virtual templates, and crypto maps. The qos pre-classify command is unavailable on all other interface types and can be enabled for IP packets only.

l2tp ip tos reflect is used to configure a virtual private dialup network (VPDN) group to preserve the ToS field of L2TP-tunneled IP packets.

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