1 Reply Latest reply on Aug 6, 2011 7:45 PM by puga

    NSP HA connected to a same switch

      Hello,

       

      In a scenario with two NSP 4050 in HA and bridge vlan and they connected to a same switch,  what is the right configuration in the switch  in order to avoid loops and guarantee the HA operation?

      For example:

       

      Switch ports configuration for NSP-1 3A port and NSP-2 3A port:

       

      interface FastEthernet XX

      description INTERNET_IN

      switchport access vlan 10

      speed 1000

      duplex full

       

      Switch ports configuration for NSP-1 3B port and NSP-2 3B port:

       

      interface FastEthernet YY

      description INTERNET_OUT

      switchport access vlan 20

      speed 1000

      duplex full

       

      The above switch interfaces have STP enabled so we avoid loops. However our concern is related to HA operation due to the long time from blocking state to forwarding state (15 to 50 secs) in the switch ports.

      Is it so simple how configure spanning-tree portfast in the above interfaces?

       

      Thanks.