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jurwiller

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8 years ago

J

jurwiller

4 Posts

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3469

March 19th, 2019 00:00

Multiple FRRP Instances

I have implemented 2 FRRP instances, followed all the guidelines, and for the most part, both rings work properly.  Occasionally, when a "failover" or "ring down" scenario happens, not all L2 Vlans forward traffic properly, Certain VLANS dont learn mac-addresses in one direction on a particular link.  is this common, and how can I prevent it?  it seems to be different VLANs every time, but they are almost always newly added vlans to the member-vlan statement.  new meaning they haven't been in the member-vlan statement during a failover/ring down condition before.  If I remove the affected vlans from the affected link, then re-add them, MAC's are learned properly, and traffic resumes as expected. 

Ring 1 = --
Ring 2 = ++

                                                                       Node 9
                                                                        +    +

                                                                        +    +
Node 1--Node 2--Node 3-- Node 4--Node 5--Node 6--Node 7--Node 8
|------------------------------------------------------------------------------------------| 

 

  • jurwiller

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    Posted March 19th, 2019 00:00

    my silly drawing didnt come out quite right.. Ring 2 is between node 6 and node 9 only, on separate interfaces apart from Ring 1
  • DELL-Josh Cr

    Community Manager

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    Posted March 19th, 2019 12:00

    Hi,

    What model switches are you using? What version is the firmware?  

  • jurwiller

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    Posted March 19th, 2019 16:00

    S4048-ON's running DNOS 9.11 (0.0P8) 

    almost all of the nodes are also in a 2 unit stack, if that matters.  

  • DELL-Josh Cr

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    Posted March 20th, 2019 09:00

    I was not able to find anything about this being a known issue. Do both rings have the same or different member vlan?

  • jurwiller

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    Posted May 14th, 2019 05:00

    some vlans are member vlans in both rings, but some are not as well.   Last night, I had the larger ring fail, and for the first time have it also trigger the smaller ring at the exact same time in logs.  these rings are essentially the figure 8 configuration in the guides.  separate physical ports, different control vlans, and the switch in the middle of the figure 8 is transit in both nodes.