Optical Redundancy with 3750

Hi,
I have some problems to link up 3750 with the following configuration.
In fact, i have 2 products generating Multicast flows (1 Main & 1 standby).
1 is connecting to 1 C3750 Main
1 is connecting to 1 C3750 Standby
Port 7 of the C3750 Main is connected to an optical switch (the main unit)
Port 8 of the C3750 Main is connected to another optical switch (the standby unit)
Port 7 of the C3750 Standby is connected to an optical switch (the standby unit)
Port 8 of the C3750 Standby is connected to another optical switch (the main unit)
The goal is to switch both optical switches in the same time, but i have 2 differents phenomenas. If i switch from the main to BU, both links are present.
If i switch from the BU to the main, 1 of both links is present and the other disappears.

Hello,
your physical setup is two 3750 switches, of which both have a connection to two optical switches, one standby, and one main unit, which gives us a total of 4 optical switches ?
How are your 3750 switches connected ? And what is the brand/manufacturer of the optical switches ? I guess I am asking in order to find out how the spanning tree is working; switches usually mean spanning tree...
Is it possible to post the configurations of the 3750 switches ?
Regards,
GP

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  • Redundancy with 3750

    Hi,
    I have some problems to link up 3750 with the following configuration.
    In fact, i have 2 products generating Multicast flows (1 Main & 1 standby).
    1 is connecting to 1 C3750 Main
    1 is connecting to 1 C3750 Standby
    Port 7 of the C3750 Main is connected to an optical switch (the main unit)
    Port 8 of the C3750 Main is connected to another optical switch (the standby unit)
    Port 7 of the C3750 Standby is connected to an optical switch (the standby unit)
    Port 8 of the C3750 Standby is connected to another optical switch (the main unit)
    The goal is to switch both optical switches in the same time, but i have 2 differents phenomenas. If i switch from the main to BU, both links are present.
    If i switch from the BU to the main, 1 of both links is present and the other disappears.

    Hello,
    your physical setup is two 3750 switches, of which both have a connection to two optical switches, one standby, and one main unit, which gives us a total of 4 optical switches ?
    How are your 3750 switches connected ? And what is the brand/manufacturer of the optical switches ? I guess I am asking in order to find out how the spanning tree is working; switches usually mean spanning tree...
    Is it possible to post the configurations of the 3750 switches ?
    Regards,
    GP

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