Hey, I've got a fairly simple, two site test network where Ping from the Mikrotik terminal with size 1501+ is timing out.
Even with do-not-fragment NOT set, it's timing out, specifying do-not-fragment times out and doesn't give any other messages.
Is there something I've set maybe that is causing packets larger than 1500 bytes to be dropped rather than fragmented?
Layout is as follows:
CHR <--> Wireless Radio <-Wireless-> Wireless Radio <--> RB3011
The interfaces, and radios are in a /29 network.
Details
CHR:
vSwitch MTU 1548
Intel 82576 (GigE Copper), MTU 1548
Radio 1548 MTU
RB3011:
Radio 1548 MTU
SFP MTU 1548, L2MTU 1600
OSPF, MPLS, and VPLS all seem to be working okay.
MPLS MTU is 1530, and the VPLS tunnel runs at 1500.
I've tried disabling OSPF, MPLS/VPLS and still, pings >1500 are timing out.
I've tried pinging using the OSPF lobridge IP addresses, the /29 IP addresses, as well as the bridge ip addresses which are in separate /28 subnets that are route-able.
Bandwidth Test between the sites only works for UDP if I specify size of 1500 or lower. TCP doesn't work at all, I get 1 Mbps for a split second, and then 0 transfer.
Filter rules are set up currently to accept all input coming from the above interfaces.
The wireless link is configured to be transparent. Signal is symmetrical, very good on both sides and consistently stable w/high SNR in a noise free frequency, the distance of the link is <1KM.
Help will be appreciated, thanks.