Basic redundant topology links help

Hi there,

I'm having problem managing the redundant links. After i added a second access layer switch to the network. I can't get 99% ping.. I would say from PC1 to R1. The ping is about 75%.

I will attach my pkt file when required.

Post configs. I'm guessing it's an issue with spanning tree convergence or you have a node on the network that does not like spanning tree bpdu's. If that is the case look up portfast on access links.

Problem solved

Can you post what exactly went wrong and how did you rectified it.