SwOS version 2.5 released!

Announcements
1

SwOS version 2.5 released
http://www.mikrotik.com/download

What’s new in v2.5:

*) SFP & SFP Status tabs are combined into one;
*) Global RSTP settings are moved unto RSTP tab;
*) Static Hosts & Hosts tabs are combined into one;
*) CSS106, CRS326, CRS317: added support for IGMP snooping;
*) CRS326 & CRS317: fixed occasional lockup on SFP module insertion;
*) CSS106: added global independent VLAN lookup option for all VLANs;
*) CSS106: do not enable IVL on reboot if it’s disabled;
*) implemented DHCP client;
*) CRS326 & CRS317: added support for DHCP & PPPoE snooping and
injecting option 82 (Intermediate Agent info);
*) CRS317: support fans;

CAVEAT: switch address acquisition mode by default is DHCP with fallback to static address;

2

Is IGMP Snooping supported on the CSS326, too?

3

I would think you could enable IGMP-Snooping on an individual port but it looks like you need to be on a VLAN, is this a mistake?

4

when will DHCP option 82 be implemented for ROS?

5

TLDR; break this single line down into what changed for DHCP and what changed for PPPoE specifically.

Intermediate Agent Info is specific to PPPoE. Please elaborate on the DHCP portions of the comment. Does this adjust the existing behavior of option 82 in DHCP that reported only the entire bridge to the actual port now? Is this a subscriber id option implementation in DHCP?

6

Can someone give me an instruction how to downgrade firmware version for SwOS? Is it just the same as upgrade (download the file and use it in the web GUI)?

So today I update my Mikrotik switch from v2.4 to v2.5 and notice that my PS4 no longer has internet connection (it works just fine before this update). My network diagram is something like this:

pfSense → Mikrotik Switch (CSS326-24G-2S+) → patch panel → keystone jack → TP-Link unmanaged switch (SG108)

There are PC, Raspberry Pi, laptop, and PS4 connected via ethernet cable under this TP-Link unmanaged switch. And every device seems to work just fine except PS4. So I begin to troubleshoot.

  1. Use different cable → not working
  2. Use other port → not working
  3. Use static IP under PS4 setting (but still connected to unmanaged switch) → works
  4. Connect the PS4 directly to Mikrotik switch (bypassing the unmanaged switch) → works

At this point, I’m confused if the problem is my Mikrotik switch or the unmanaged switch, in my test result, it seems like the problem is the unmanaged switch but I don’t have this issue before I update my Mikrotik switch and other device (except PS4) seems to be working just fine under this unmanaged switch. How do I troubleshoot to make sure which one is the issue? I already tried to restart everything (pfSense, Mikrotik switch, unmanaged switch) and still not working. For now, I use static IP address for PS4.

Note: I don’t use VLAN or any of these fancy settings.

7

2.5 breaks LAG
All ports in separate LAG groups become the same Trunk - 1 after upgrade to 2.5 causing massive packet loss/drop
2.4 works fine

8

Upgrade 3x CRS326’s with no issues.

2.5 working with 803.2ad LAG in passive mode, connected device is a NAS

2.5 Fixed the following issues for me:

  • Issue where switch sometimes wouldn’t list hosts
    Now properly reports the FS.com DAC, before a temp and power level would be reported, the DAC does not have this capability
9

To clarify LAG is working fine in passive mode , but not in static

10

Thanks for the continued work on SWOS!

I did notice a weird issue after upgrading to 2.5 on 2x CSS326-24G-2S+RM units connected together over SFP+ with a pfSense router using IPv6 and IPv4, for some reason I was only getting IPv6 addresses on on both units, however all IPv4 static assignments and existing leases continued to operate. Assuming this has something to do with the new DHCP Snooping feature as all functionality worked after swapping in a non-smart switch for troubleshooting purposes.

Under the DHCP and PPPoE settings, I tried disabling option 82 and ensuring all ports were selected as trusted, this did not resolve the issues so I tried resetting the units back to default then re-configuring them with no improvement (I don’t have a lot of custom settings, no VLANs, etc…). Whats odd and makes me think its a DHCP snooping issue, is that when only one unit is plugged in DHCP seems to work again and everything starts getting both IPv4 and IPv6 assignments. None of these issues existed on the the 2.4 firmware version, please let me know if anyone has any ideas because at this point I can’t think of anything else to try.

Thanks!

11

Don’t know if it’s right place to say it, but the 2.5 SwOS has critical bug regarding DHCP/PPPoE Snooping on CSS326 and because of it it is not possible to disable this feature. In my case it breaks DHCP/PPPoE completely, because CSS is sending back duplicated requests on uplink. So if anyone is using DHCP/PPPoE in his network, I strongly advice against upgrading to 2.5, also if you do upgrade downgrade to 2.4 works flawlessly.

12

I have a CRS317-1G-16S+
Default firmware 2.3p, i upgrade to 2.5
After upgrading i can’t change password.
I use for "old password’ a lot variations (empty field, admin, etc).
Accordingly, I can only log in as admin and with empty password.
Help

13

You can configure it undewr System → DHCP & PPPoE Snooping
Uncheck “Add Information option” and it does seem to work again.
Can anyone explain what this does?

14

I have the same problem but with “CSS106-5G-1S” It’s new switch, no changed default password, I only update to 2.5.

15

Yesterday I noticed that there was an upgrade available for my two CSS326 switches. As 2.4 (my first experience with Mikrotik software) has been super reliable for me, I upgraded without a second thought. Unfortunately, almost immediately, DHCP stopped working. Despite just having upgraded the switches, I did not realize they might be the source. I rebooted my vSphere server, pfSense, turned DHCPd on and off, restarted DNS, rebooted my WAN devices, reseated the lan cables in my wireless equipment and then gave up. I woke up this morning to find that still nothing received DHCP only then did I think to read this thread. After downgrading to 2.4, which luckily still had sitting in my downloads folder, everything is well again.

TL;DR
Upgraded to 2.5. DCHP stopped working.
Downgraded to 2.4. Everything started working again.

16

I have this exact same problem with a brand new CSS326-24G-2S+. I can’t change the default empty password.

17

Hi,

I’m also experiencing problems with DHCP since upgrading to SWOS 2.5.

I want to try an downgrade to 2.4 but I can’t find the file for download. Can anybody help me with that?

Thanks in advance!

18

Alright. Found the firmware file online and downgraded the switch to 2.4. Now DHCP works again!

19

I have SwOS v2.4 for CSS326, you can download it here. https://ufile.io/dxjfa

It’s my first MikroTik device and I upgrade to v2.5 without thinking much and I’d have to say it’s going to be the first and the last time I will ever buy from MikroTik, I think they make good product and their price is very competitive but the firmware (I don’t mind outdated UI) is a joke, how is it even possible a critical bug like broken DHCP can be missed? Not to mention other bug like changing password. Okay sure it happens sometimes but it’s been 2 weeks and still no word from MikroTik about this issue.

I posted the broken DHCP issue 2 weeks ago and it never receive any response

http://forum.mikrotik.com/t/ps4-suddenly-not-getting-ip-address-from-dhcp-after-i-update-my-mikrotik-switch-firmware-to-swos-v2-5/112284/1

at the time I’m still not 100% sure if the issue is the MikroTik switch, TP-Link switch, or my Unifi AP. I contacted Ubiquiti live chat and they help me track down the issue and it turned out the culprit is my CSS326, I checked the download page to download the previous version because I want to downgrade but to my surprise I can’t find it, luckily I have backup. I posted another thread the day after to warn people not to upgrade to v2.5

http://forum.mikrotik.com/t/psa-dhcp-is-broken-in-swos-v2-5/112304/1

no response so far (surprise!), I also saw someone asking about where they can get SwOS archive a week ago, also no response

http://forum.mikrotik.com/t/swos-archive/112459/1

I sent an email to MikroTik yesterday, let’s see if I’d get a response, finger crossed since the support instruction page is filled with “read the doc, read the FAQ, read the forum, support only for paying customers, you should have basic networking knowledge, contact your reseller first”, and that to me sounds like they don’t want you.

I think I had better support from TP-Link.

20

Thank you very much for the download link.

I can fully understand you dissatisfaction with Mikrotik. I’m thinking the same way. DHCP is essential!