02-01-2010 01:30 PM
I need some informatio about how to configurade Ironport S160 to sopport load balancing or redundacy deployments..
Solved! Go to Solution.
02-02-2010 08:47 AM
If you're using a Cisco ASA, router, or Layer-3 switch, you could use WCCP. WCCP will handle the load balancing.
02-02-2010 08:47 AM
If you're using a Cisco ASA, router, or Layer-3 switch, you could use WCCP. WCCP will handle the load balancing.
02-10-2010 02:04 AM
Although not as "wizzy" if your environment isn't setup for WCCP then you could use a .pac file to do the job as well.
hashing the URL and then determing based on that result to push it to proxy1 or proxy2 something like this, using a RETURN proxy1; proxy2; statement will try one proxy first and if no joy try the next one
function FindProxyForURL(url, host)
{
ret = URLhash2(url);
switch(ret % 2){
case 1: return "PROXY x.x.x.1:80; PROXY x.x.x.2:80";
break;
default: return "PROXY x.x.x.2:80; PROXY x.x.x.1:80";
}
}
function URLhash(name)
{
var cnt=0;
var str=name.toLowerCase(name);
if ( str.length ==0) {
return cnt;
}
for(var i=0;i < str.length ; i++) {
var ch= atoi(str.substring(i,i + 1));
cnt = cnt + ch;
}
return cnt ;
}
/*
URLhash2( ) for directory name hash computing version.
written by SHARP Corp in Feb 1997
Objects in a same directory will be accessed via the same proxy.
Use URLhash2( ) instead of URLhash( ) if you prefer to use persistent
connection in HTTP 1.1
http://www.sharp.co.jp/sample/test/img/mebius.png
http://www.sharp.co.jp/sample/test/img/zaurus.png
http://www.sharp.co.jp/sample/test/img/wiz.png
<------------------------------------->
directory name hashing here
*/
function URLhash2(name)
{
var cnt=0;
var dirptr=0;
var str=name.toLowerCase(name);
if ( str.length ==0) {
return cnt;
}
/* skip filename in directory */
for(var i=str.length - 1;i >=0 ; i--) {
if ( str.substring(i,i +1) == '/' ) {
dirptr = i+1 ;
break;
}
}
for(var i=0;i < dirptr; i++) {
var ch= atoi(str.substring(i,i + 1));
cnt = cnt + ch;
}
return cnt ;
}
function atoi(charstring)
{
if ( charstring == "a" ) return 0x61; if ( charstring == "b" ) return 0x62;
if ( charstring == "c" ) return 0x63; if ( charstring == "d" ) return 0x64;
if ( charstring == "e" ) return 0x65; if ( charstring == "f" ) return 0x66;
if ( charstring == "g" ) return 0x67; if ( charstring == "h" ) return 0x68;
if ( charstring == "i" ) return 0x69; if ( charstring == "j" ) return 0x6a;
if ( charstring == "k" ) return 0x6b; if ( charstring == "l" ) return 0x6c;
if ( charstring == "m" ) return 0x6d; if ( charstring == "n" ) return 0x6e;
if ( charstring == "o" ) return 0x6f; if ( charstring == "p" ) return 0x70;
if ( charstring == "q" ) return 0x71; if ( charstring == "r" ) return 0x72;
if ( charstring == "s" ) return 0x73; if ( charstring == "t" ) return 0x74;
if ( charstring == "u" ) return 0x75; if ( charstring == "v" ) return 0x76;
if ( charstring == "w" ) return 0x77; if ( charstring == "x" ) return 0x78;
if ( charstring == "y" ) return 0x79; if ( charstring == "z" ) return 0x7a;
if ( charstring == "0" ) return 0x30; if ( charstring == "1" ) return 0x31;
if ( charstring == "2" ) return 0x32; if ( charstring == "3" ) return 0x33;
if ( charstring == "4" ) return 0x34; if ( charstring == "5" ) return 0x35;
if ( charstring == "6" ) return 0x36; if ( charstring == "7" ) return 0x37;
if ( charstring == "8" ) return 0x38; if ( charstring == "9" ) return 0x39;
if ( charstring == "." ) return 0x2e;
return 0x20;
}
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