I have two CSS 11501 one in each location (distance around 7 km) I want to configure Box-box redundancy between these two CSS15001, I used the Ge port e9 to connect them using SM fiber directly between these two switches. The link is not comming up. Need help and suggestion to over come this.
the SFP GBICs should probably be at least a 1000Base-LH (1310nm) witch shold cover approx 10Km on single mode fiber.
Hope this helps.