I have a problema trying to pass packet bigger than 1518 between two L3 switches. I have an application that work with giant packets (2048bytes) by default, however once the packets pass the NIC of the server the packets can be fragmented. It work fine when I have normal routers but we recently open a new branch that is connected using fiber optic transceiver and a switch 3550 L3 for access. When I run an extended ping from 3550 to 4506 (Switch in the central) with the packet size setting to 1600 the ping do not answer. I have configured ip routing in both switches. What can I do to packet fragmentations?
Can you set the 'sys mtu 1500' on the 3550 switch. 3550 switches support different MTU settings and I don't know what your's is set to. Most router interfaces' MTU default to 1500-bytes. Making the MTU setting consistent on the switch with other layer 3 devices in the network could avoid problems with fragmentation at various sizes.
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 customers befor...
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