Hi there!
I am owner of a CRS317-1G-16+.
The device is pretty much sitting in a cupboard and collecting dust most of the time (1 year, give or take), since the features I am looking for are not working as one might would expect.
I pull it out and flash a new development release of router-os every couple of months.
The most important features for me are: wire-speed Inter-VLAN routing and IPFIX. That would be the first big step.
Current status is:
- Not even close to wirespeed(10G), i get throughput in the range of 300-400 mbit/s when measuring with ipferf between two vlans.
Yes, i enabled hw-offloading:
[admin@BackBone] > /interface/ethernet/switch/ print
Columns: NAME, TYPE, L3-HW-OFFLOADING
# NAME TYPE L3-HW-OFFLOADING
0 switch1 Marvell-98DX8216 yes
I can “see” the packets hitting the cpu as its load increases dramatically as soon as i begin a test.
The bridge ports alll show as HW Offload, but its obviously not the case.
[admin@BackBone] /interface> /interface/bridge/port/ print
Flags: I - INACTIVE; H - HW-OFFLOAD
Columns: INTERFACE, BRIDGE, HW, PVID, PRIORITY, PATH-COST, INTERNAL-PATH-COST, HORIZON
# INTERFACE BRIDGE HW PVID PRIORITY PATH-COST INTERNAL-PATH-COST HORIZON
0 H sfp-sfpplus1 bridge1 yes 1 0x80 10 10 none
1 IH sfp-sfpplus2 bridge1 yes 1 0x80 10 10 none
2 IH sfp-sfpplus3 bridge1 yes 1 0x80 10 10 none
3 IH sfp-sfpplus4 bridge1 yes 1 0x80 10 10 none
4 H sfp-sfpplus5 bridge1 yes 1 0x80 10 10 none
5 H sfp-sfpplus6 bridge1 yes 1 0x80 10 10 none
6 IH sfp-sfpplus7 bridge1 yes 1 0x80 10 10 none
7 IH sfp-sfpplus8 bridge1 yes 1 0x80 10 10 none
8 H sfp-sfpplus9 bridge1 yes 1 0x80 10 10 none
9 H sfp-sfpplus10 bridge1 yes 133 0x80 10 10 none
10 IH sfp-sfpplus11 bridge1 yes 1 0x80 10 10 none
11 IH sfp-sfpplus12 bridge1 yes 1 0x80 10 10 none
12 IH sfp-sfpplus13 bridge1 yes 1 0x80 10 10 none
13 H sfp-sfpplus14 bridge1 yes 1 0x80 10 10 none
14 H LACP-Trunk2CCR2004 bridge1 yes 1 0x80 10 10 none
And I also have a fasttrack-connecction fw rule:
/ip firewall filter
add action=fasttrack-connection chain=forward connection-state=established,related,untracked hw-offload=yes
- IPFix “works” to some degree: Its just that ALL timestamps are messed up: They are dated to 01.01.1970.
Yes, the system has a correct time and uses ntp:
[admin@BackBone] > /system/clock/ print
time: 12:40:05
date: sep/12/2021
time-zone-autodetect: yes
time-zone-name: Europe/Zurich
gmt-offset: +02:00
dst-active: yes
I tried all versions of netflow as well as ipfix, date issue is the same for all of them.
I hope my feedback helps in further development of routeros: feel free to ask questions.
If somebody has a advice for me: Please, tell me 
Kind regards