Error installing percona-server 5.6

I am installing percona-server 5.6 on system having configuration
Distributor ID: Debian
Description: Debian GNU/Linux 7.6 (wheezy)
Release: 7.6
Codename: wheezy

And i am getting this error
Reading package lists…
Building dependency tree…
Reading state information…
The following extra packages will be installed:
libaio1 libdbd-mysql-perl libdbi-perl libio-socket-ip-perl
libio-socket-ssl-perl libmysqlclient18 libnet-libidn-perl libnet-ssleay-perl
libperconaserverclient18.1 libsocket-perl libterm-readkey-perl mysql-common
percona-server-client-5.6 percona-server-common-5.6
Suggested packages:
tinyca
Recommended packages:
mysql-server
The following NEW packages will be installed:
libaio1 libdbd-mysql-perl libdbi-perl libio-socket-ip-perl
libio-socket-ssl-perl libmysqlclient18 libnet-libidn-perl libnet-ssleay-perl
libperconaserverclient18.1 libsocket-perl libterm-readkey-perl mysql-common
mysqltuner percona-server-client-5.6 percona-server-common-5.6
percona-server-server-5.6 percona-toolkit
0 upgraded, 17 newly installed, 0 to remove and 41 not upgraded.
Need to get 43.3 MB of archives.
After this operation, 149 MB of additional disk space will be used.
Get:1 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libaio1 amd64 0.3.109-3 [9,150 B]
Get:2 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libdbi-perl amd64 1.622-1+deb7u1 [892 kB]
Get:3 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libdbd-mysql-perl amd64 4.021-1+b1 [126 kB]
Get:4 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libsocket-perl amd64 2.002-1 [40.0 kB]
Get:5 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libio-socket-ip-perl all 0.16-2 [23.6 kB]
Get:6 [url]http://packages.dotdeb.org/[/url] wheezy/all mysql-common all 5.6.19-1~dotdeb.1 [87.6 kB]
Get:7 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libnet-ssleay-perl amd64 1.48-1+b1 [335 kB]
Get:8 [url]http://packages.dotdeb.org/[/url] wheezy/all libmysqlclient18 amd64 5.6.19-1~dotdeb.1 [1,121 kB]
Get:9 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libio-socket-ssl-perl all 1.76-2 [68.0 kB]
Get:10 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libnet-libidn-perl amd64 0.12.ds-1+b3 [21.2 kB]
Get:11 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main libterm-readkey-perl amd64 2.30-4+b2 [32.2 kB]
Get:12 [url]http://mirrors.kernel.org/debian/[/url] wheezy/main mysqltuner all 1.2.0-1 [14.6 kB]
Get:13 [url]http://repo.percona.com/apt/[/url] wheezy/main percona-server-common-5.6 amd64 5.6.21-69.0-675.wheezy [12.2 kB]
Get:14 [url]http://repo.percona.com/apt/[/url] wheezy/main libperconaserverclient18.1 amd64 5.6.21-69.0-675.wheezy [920 kB]
Get:15 [url]http://repo.percona.com/apt/[/url] wheezy/main percona-server-client-5.6 amd64 5.6.21-69.0-675.wheezy [9,960 kB]
Err [url]http://repo.percona.com/apt/[/url] wheezy/main percona-server-client-5.6 amd64 5.6.21-69.0-675.wheezy
Connection failed
Get:16 [url]http://repo.percona.com/apt/[/url] wheezy/main percona-server-server-5.6 amd64 5.6.21-69.0-675.wheezy [27.9 MB]
Get:17 [url]http://repo.percona.com/apt/[/url] wheezy/main percona-toolkit all 2.2.11 [1,696 kB]
Failed to fetch [url]http://repo.percona.com/apt/pool/main/p/percona-server-5.6/percona-server-client-5.6_5.6.21-69.0-675.wheezy_amd64.deb[/url] Connection failed
Fetched 33.3 MB in 8min 57s (62.0 kB/s)
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?