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Thread: OSPF over GRE

  1. #1
    Untangler
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    Default OSPF over GRE

    Dear All,
    I have found an error during OSPF configuration.

    Untangle is connected over GRE to Mikrotik

    pool range for GRE is 192.168.200.0/24

    After GRE creation if you go to routs in UT, you can see that 1st GRE tunnel is 192.168.200.0/30 so this network is assigned automatically

    on Mikrotik OSPF area 0.0.0.0 is created and has added networks: 10.0.0.0/24, 192.168.200.0/30 to ospf distribution

    Now on UT i have add network 10.1.0.0/24 for a local net, but when i try to add a tunnel network 192.168.200.0/30

    There is an error: Sync-settings failed: returned 1

    without GRE network in Networks TAB its impossible to distribute OSPF over GRE

    UT version 14.2.0 (latest)

  2. #2
    Untangler jcoffin's Avatar
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    Default

    i believe this is fixed in Build: 14.2.1.20190807T184444.f4154ba70c-1stretch. You can send your UID to support and get this build immediately instead of waiting for the roll out.

    https://jira.untangle.com/browse/NGFW-12556
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  3. #3
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    Dear Jcoffin,
    Any chance to download 14.2.1 as ISO for a test?

    Thanks

  4. #4
    Untangler jcoffin's Avatar
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    Quote Originally Posted by boris.minakov View Post
    Dear Jcoffin,
    Any chance to download 14.2.1 as ISO for a test?
    Just released the images.

    https://wiki.untangle.com/index.php/Downloads#14.2.1
    Attention: Support and help on the Untangle Forums is provided by
    volunteers and community members like yourself.
    If you need Untangle support please call or email support@untangle.com

  5. #5
    Untangler
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    Just tried to set in OSPF network, GRE Address pool, the same error

    Sync-settings failed: returned 1

    OSPF is not working over GRE

    also the same error, when you try to put 0.0.0.0/0 as a network, to distribute all possible networks


    Also, if you got to interface overrides in OSPF add 1 interface and than try to add the second one

    first added interface gets status like: Unknown Ethernet (seems bug)




    The idea is:

    1) Mikrotik with real IP
    2) UT with real IP
    3) Create GRE Tunnel between MK and UT
    4) Run OSPF from GRE interface





    OSPF networks tab allows to add networks only from interfaces tab

    If you try to add GRE pool there is error (But if you wont add GRE pool, OSPF over GRE wont work !)

    what i did, and that is not correct but for a try:

    1) Interfaces 192.168.10.1/28
    2) GRE Pool 192.168.10.8/30
    3) OSPF networks added 192.168.10.0/24 now it was added, because gre pool was the same as from networks tab, but this is not correct (but now mikrotik see you)

    Method 2
    Lets say GRE pool is 192.168.200.0/24 and local network is 192.168.10.1/28

    1)add IPV4 alice for 192.168.10.1/28 as 192.168.200.1/28

    This will write GRE address to interfaces tab (some where in config)

    2) Add 192.168.200.0/24 GRE pool to OSPF
    now during add there will be no problem as seems it checks that this pool exists in interfaces
    it adds it successfully and ospf starts working

    But as this is not proper network set-up it wont be stable, i done this just to check that OSPF networks tab allows to add networks available only in interfaces tab
    Last edited by boris.minakov; 08-16-2019 at 07:29 AM.

  6. #6
    Untangler
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    Has anyone reproduced error? OSPF is really needed when you have cicsco and mikrotik in place

  7. #7
    Untangle Ninja Jim.Alles's Avatar
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    It would be helpful to open a ticket with support. If license not paid, only priority will be lower.
    Use the green button on the bottom right of this page.

  8. #8
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    Thank you very much for pointing, i have just opened a ticket and UT Team is already looking into issue.
    I have also tried as a test old versions 14.0, 14.1

    But the same error is in all cases

    But as UT Support Team is looking into issue, this means it will be fixed soon

  9. #9
    Untangler
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    Update,

    After I have raised a Ticket, UT access remotely and helped me, i am so glad with help and support
    Here is what we have

    Before FIX - GRE Tunnel Network can not be added to OSPF (or any other network, which was not in Config / Network / Interfaces Tab)

    After Fix - Network can be added to OSPF and work fine

    Only one issue we did not trouble shoot is:

    When IPSEC over GRE is enabled - OSPF stops working

    Suppose, for this i need to raise another ticket

  10. #10
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    Update

    14.2.2 already includes fix provided for me by Support
    Just tested working fine

    Now I will open separate ticket to fix IPSEC over GRE with OSPF
    Jim.Alles likes this.

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