The rate limit command looks like is applied on an interface running MPLS. MPLS uses tags to tag a packet, so that MPLS enabled routers can switch the packets by looking up the labels, which is much faster (takes place at layer 2) rather than doing a route table lookup, and route the packet. More on MPLS can be read from CCO. MPLS has a quality of service field in the header, similar to TOS (precedence) bits in the IP header. In an MPLS enabled network, the IP ToS bits can be mapped to the EXP (experimental) field in the MPLS header. Both of these are equivalent.
The rate limit command is configured to set the mpls EXP value to 5 for all those packets, which conform to the specfied rate, and for those which exceed the limit, the EXP value is set to 0 ( no priority).
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...