SPLIT INTERNET SPEED/BANDWIDTH IN SQUID REDHAT LINUX-5

        Split Internet Speed/Bandwidth Limit on Squid REDHAT LINUX -5

Requirements :
1. Squid Installed and configured on Linux Machine.

2. --enable-delay-pools (This is mandatory, To check its enabled or not)
[[root@proxy1 ~]# squid -v
Squid Cache: Version 2.6.STABLE21
configure options:  '--build=i686-redhat-linux-gnu' '--host=i686-redhat-linux-gnu' '--target=i386-redhat-linux-gnu' '--program-prefix=' '--prefix=/usr' '--exec-prefix=/usr' '--bindir=/usr/bin' '--sbindir=/usr/sbin' '--sysconfdir=/etc' '--includedir=/usr/include' '--libdir=/usr/lib' '--libexecdir=/usr/libexec' '--sharedstatedir=/usr/com' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--exec_prefix=/usr' '--bindir=/usr/sbin' '--libexecdir=/usr/lib/squid' '--localstatedir=/var' '--datadir=/usr/share' '--sysconfdir=/etc/squid' '--enable-epoll' '--enable-snmp' '--enable-removal-policies=heap,lru' '--enable-storeio=aufs,coss,diskd,null,ufs' '--enable-ssl' '--with-openssl=/usr/kerberos' '--enable-delay-pools' '--enable-linux-netfilter' '--with-pthreads' '--enable-ntlm-auth-helpers=SMB,fakeauth' '--enable-external-acl-helpers=ip_user,ldap_group,unix_group,wbinfo_group' '--enable-auth=basic,digest,ntlm' '--enable-digest-auth-helpers=password' '--with-winbind-auth-challenge' '--enable-useragent-log' '--enable-referer-log' '--disable-dependency-tracking' '--enable-cachemgr-hostname=localhost' '--enable-underscores' '--enable-basic-auth-helpers=LDAP,MSNT,NCSA,PAM,SMB,YP,getpwnam,multi-domain-NTLM,SASL' '--enable-cache-digests' '--enable-ident-lookups' '--with-large-files' '--enable-follow-x-forwarded-for' '--enable-wccpv2' '--enable-fd-config' '--with-maxfd=16384' 'build_alias=i686-redhat-linux-gnu' 'host_alias=i686-redhat-linux-gnu' 'target_alias=i386-redhat-linux-gnu' 'CFLAGS=-D_FORTIFY_SOURCE=2 -fPIE -Os -g -pipe -fsigned-char' 'LDFLAGS=-pie'
[root@proxy1 ~]#]

3. Check internet is working fine in client side..

4. As per your requirement make different groups...

Scenario : I have installed Squid in RHEL-5 and given internet access to 172.16.4.X subnet... We have Lease line 4Mbps line. I have made 4 groups for different speed limit. This group can access internet speed max what we have assigned speed limit...
Group-1 : 172.16.4.1 to 172.16.4.51 (Unlimited Speed) /etc/squid/unlimited.txt
Group-2 : 172.16.4.51 to 172.16.4.100 (1Mbps) /etc/squid/our_1.5mbps.txt
Group-1 : 172.16.4.101 to 172.16.4.150 (1.5Mbps) /etc/squid/our_1mbps.txt
Group-1 : 172.16.4.151 to 172.16.4.240 (512Kbps) /etc/squid/our_512kbps.txt

Modify : /etc/squid/squid.conf file (Before modification take one backup copy for your safer side...) and enter given dalay_pools details after ACL entries...For group IP entries create 4 files in /etc/squid/ by speed limit as given above names...


##INTERNET SPEED LIMIT###
#Internet Speed Limit Define
acl all src 0.0.0.0/0.0.0.0 ##(Here you can define your Network)
acl unlimited src "/etc/squid/unlimited.txt"
acl our_1.5mbps src "/etc/squid/our_1.5mbps.txt"
acl our_1mbps src "/etc/squid/our_1mbps.txt"
acl our_512kbps src "/etc/squid/our_512kbps.txt"
http_access allow unlimited
http_access allow our_1.5mbps
http_access allow our_1mbps
http_access allow our_512kbps
http_access deny all
delay_pools 4
delay_class 1 2
delay_access 1 allow unlimited
delay_access 1 deny all
delay_parameters 1 -1/-1 -1/-1

delay_class 2 2
delay_access 2 allow our_1.5mbps
delay_access 2 deny all
delay_parameters 2 -1/-1 196608/196608

delay_class 3 2
delay_access 3 allow our_1mbps
delay_access 3 deny all
delay_parameters 3 -1/-1 131072/131072

delay_class 4 2
delay_access 4 allow our_512kbps
delay_access 4 deny all
delay_parameters 4 -1/-1 65536/65536

Save file and Restart Squid Service..

Above given details is 4 pools entry's... Here we have used dalay_class 2 for all 4 pools, as we have allowed dalay_parameters 4 65536/65536 (its in bytes for 512kbps) user can get max speed 512kbps only...as per your requirement you can change with speed limit...


Thanks and Regards,
Sandeep CC