1: bras
    1): pkill l2tpd
    2): bras start

2: su
    gedit /etc/yum.repos.d/sjtu.repo
    add the follow content:
   ################################
     [Fedora-ftp.sjtu.edu.cn]
     name=Fedora 10 - i386
     baseurl=http://ftp.sjtu.edu.cn/fedora/linux/releases/10/Fedora     /i386/os/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY
[Everything-ftp.sjtu.edu.cn]
name=Everything 10 - i386
baseurl=http://ftp.sjtu.edu.cn/fedora/linux/releases/10/Everything/i386/os/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY
[updates-ftp.sjtu.edu.cn]
name=Fedora updates
baseurl=http://ftp.sjtu.edu.cn/fedora/linux/updates/10/i386/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-Fedora file:///etc/pki/rpm-gpg/RPM-GPG-KEY
##############################
yum makecache
###############################