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SG200-08 firmware issue

Hello,

I can confirm the issue and spend also two days to find the reason.

After update to latest release NFS share on my NAS was no longer accessible.

After downgrade to 1.0.5.1 it ís working like all other NONAME products before.....

Thought CISCO is THE SWITCH brand and therefore I bought two of this very expensive ones.....

The result is frustrating.

It seems that nobody is working on this issue now.....??????

Beginner

SG200-08 firmware issue

indeed Cisco when will this be fixed!

The problem is described perfectly and can be simulated easily!!!

Fix this asap!!!

Cisco Employee

Re: SG200-08 firmware issue

We are checking this issue. On v1.0.6.2, DOS control is enabled, hence all TCP SYN packet with source port 0-1023 are dropped.

Could you confirm it's the root cause for your problem? If yes, we will fix it in next release.

Re: SG200-08 firmware issue

How can I identify which ports are used for NFS service?

Cisco Employee

SG200-08 firmware issue

Capture packets on your client by using Wireshark.

SG200-08 firmware issue

Synology NAS is using following ports for NFS:

111, 892, 2049

Cisco Employee

SG200-08 firmware issue

Thanks for your info, we'll try to fix it.

Highlighted
it Beginner
Beginner

SG200-08 firmware issue

Is there a way for us to turn off the DOS control that you have enabled in this firmware?

Cisco Employee

SG200-08 firmware issue

Unfortunately, there is no way to turn it off.

The next official release may need a couple of months, if you can't wait, there are 2 solutions

1. Downgrade to v1.0.5.1

2. Contact SBSC

http://www.cisco.com/en/US/support/tsd_cisco_small_business_support_center_contacts.html

probably you will get a beta firmware.

Beginner

SG200-08 firmware issue

Why is the 1.0.6.2 firmware still freely available to download without so much as a warning as to its bizarre behaviour when it is obviously broken?

Cisco Employee

SG200-08 firmware issue

Port 0-1023 are well known ports, normally service use source port greater than 1023. Only some special service use source port in 0-1023, not all the customers found their service broken.

Beginner

SG200-08 firmware issue

You are kidding, right? "well known" TCP (OSI layer 4 last time I checked) ports?

We're talking a about a layer 2 switch here that works as a layer 3 firewall in the default configuration. WTF?

it Beginner
Beginner

SG200-08 firmware issue

I have to agree with Walter that this does seem odd. If you are going to add these "features" they should be controllable in the interface. This is not some esoteric issue - we were unable to print to our Sharp copier using the standard LPD interface on our network. Let me repeat, nobody could print. As IT people know this is a base expectation on a network with neary hysterical reactions from users.

Beginner

SG200-08 firmware issue

Right. It is far from esoteric, it is simply embarrassing, period.

A well known vendor of network devices releases an update to a switch firmware,

apparently done by someone who obviously has not a clue about networking (layers).

Cisco, where is your QA?

Beginner

SG200-08 firmware issue

Walter Haidinger   points Walter Haidinger 3 posts since
May 26, 2013   Currently Being Moderated
Jul 17, 2013 9:08 AM (in response to Elph Morgan)
Right. It is far from esoteric, it is simply embarrassing, period.


A well known vendor of network devices releases an update to a switch firmware,

apparently done by someone who obviously has not a clue about networking (layers).


Cisco, where is your QA?

Yup, they can't do mirroring right either.

SG200-08 Not Mirroring Broadcasts
https://supportforums.cisco.com/message/3989471#3989471

Mirror VLAN Tag Not Stripped
https://supportforums.cisco.com/message/3926437#3926437