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Johannes_ger
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Joined: Fri May 16, 2008 2:53 pm
Location: Germany

RB411-L3: Funny behaviour, only even IP adresses accepted?!

Fri May 16, 2008 3:15 pm

Hi.
New Mikrotik user, I am playing around with some RB411 boards.

I have one board here which is set initially to 192.168.1.222/24 on ether1. All works nicely, ether1 and wlan1 are members of a bridge.

For testing purposes I wanted to change the IP adress of ether1. I used (vie telnet)
/ip address
set 0 address=192.168.1.223/24 network=192.168.1.0 broadcast=192.168.1.255
(yes, item 0 is the correct entry for ether1).

A print shows that this information is used nicely. CLose telnet connection, new telnet connection to new address - nothing happens. Ping - no reply except an occasional redirect from the old adress (.222).

Now I tried the foillowing (complete reset, my default config from import, all works fine with 192.168.1.222).
add address=192.168.1.223/24 network=192.168.1.0 broadcast=192.168.1.255 interface=ether1
This new address was added as item 3. Now
remove 0
(the old address item).

Same result, IP address not reachable by telnet.

Now, just for the sake of it I tried to use 192.168.1.224 as a ew address - and voila. Everything works, regardless of how I set it (with set 0 or add), telnet, ping all ok.
I tried 192.168.1.225 - same error as before with .223 - nothing works.
Tried 192.168.1.226 - works perfectly.
Tried 192.168.1.227 - same error as before with .223 - nothing works.

Eh?
So it seems as if all even numbered IP adresses work on ether1, all odd addresses not. This first looks like a masking problem, but the netmask used is always 255.255.255.0 (or /24). All adresses mentioned are not in use in my network.

Any idea what that could be?

RouterOS 3.0rc12 on RB411-L3

Thanks,
Johannes
 
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hilton
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Posts: 634
Joined: Thu Sep 07, 2006 5:12 pm
Location: Jozi (aka Johannesburg), South Africa

Re: RB411-L3: Funny behaviour, only even IP adresses accepted?!

Fri May 16, 2008 3:34 pm

Johannes you really need to upgrade to at least 3.7 but go for 3.9.

That version you have is a release candidate and may or probably contains various oddities.

Do that and update us.
 
Johannes_ger
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Posts: 4
Joined: Fri May 16, 2008 2:53 pm
Location: Germany

Re: RB411-L3: Funny behaviour, only even IP adresses accepted?!

Fri May 16, 2008 3:44 pm

Johannes you really need to upgrade to at least 3.7 but go for 3.9.

That version you have is a release candidate and may or probably contains various oddities.

Do that and update us.
Ok, thanks for the fast reply.
I have to find out how to upgrade, I bought the boards with RouterOS pre-installed.

I will come back when I have more information.

Regards,
Johannes.
 
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hilton
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Posts: 634
Joined: Thu Sep 07, 2006 5:12 pm
Location: Jozi (aka Johannesburg), South Africa

Re: RB411-L3: Funny behaviour, only even IP adresses accepted?!

Fri May 16, 2008 3:50 pm

I have to find out how to upgrade, I bought the boards with RouterOS pre-installed.
Go to this address;
http://www.mikrotik.com/download.html

choose the download location nearest to you (probably Poland) then click on RB400 series and then click on the 'All packages' file.

Unzip that into a temp directory and drag and drop them to Winbox (you need to have 'files' open first though). It will tell you it's uploading and then once it's finished, reboot and you should see the new version displayed near the top in winbox.
 
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ahmedsaffar76
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Location: Iraq

Re: RB411-L3: Funny behaviour, only even IP adresses accepted?!

Fri May 16, 2008 3:56 pm

Hi ;
further more you said that ether1 and wlan1 in bridge .
try to put the ip to the bridge not to the ether1 and check if it will work or not .
with best regards.
:)

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