The LLI rpm packages are distributed via YUM repository.

You can download the repository file here: lhcb-online.repo

Installation instructions:

#As root:
cd /etc/yum.repos.d
wget https://lhcb-online-soft.web.cern.ch/rpm/lhcb-online.repo

#you can then install the LLI packages from the repository:
yum update
yum install lhcb-p40-lli-devices-llimon lhcb-p40-lli-devices-tools