[nsp] Server Load Balancing Options

[Simon Hamilton-Wilkes]

We're using IOS SLB on the 6500 and 7200.
IOS SLB only supports 500 VIPs so we have a pair of CSMs on order, yes
they are expensive, but are worthwhile if you have multi gigabit throughput.

The IOS SLB I have been pretty impressed by, scalability aside.  We have the
NPE-G1s in our 7200s and CPU is not a problem.  We have RADIUS / VPN / HTTP
/
HTTPS / SSH etc behind the LB with no problems.

My only issue is with reporting, I want to run MRTG against the individual
VIPs
shout out anyone who's got that working!

The HA is dealt with by HSRP as you say between multiple chassis, or by RPR+
within a chassis which works for us - I've used it to upgrade IOS with only
a 35 second outage.

I don't see how you could price 7200 IOS SLB so cheap, the feature set alone
to support it is 5K + the hardware.

Simon Hamilton-Wilkes, CCIE #9448


-----Original Message-----
From: cisco-nsp-bounces at puck.nether.net
[mailto:cisco-nsp-bounces at puck.nether.net]On Behalf Of Jason Greenberg
Sent: Wednesday, March 26, 2003 10:40 AM
To: cisco-nsp at puck.nether.net
Subject: [nsp] Server Load Balancing Options



Hello, would someone please validate this list, and or recommend less
alternatives?  I would appreciate it a lot!

Our requirements:
	1) Server Load Balancing (IP address translation) LAYER 3 ONLY
	2) Server availability monitoring (ping?)
	3) Redundant Switch Capability (SLB HSRP?)
	4) medium load - DNS, LDAP, mail, radius, etc..

As far as I can tell, my options are

1) 6500 SLB CSM - 40-100 grand ?? what modules are needed here?
2) 6500 cat/native OS SLB ??? what modules are needed here?
3) 4840G - 30 grand
4) 7200 Router IOS SLB <- 10 grand
5) IOS NAT on a 3640?? <- no high availability here, but cheap...

Here is my question - is there anything that is not so bloody expensive
that will do medium load SLB for an ISP?

--
Jason Greenberg, CCIE #11021
Network Administrator
Execulink, Inc.
<jg at execulink.com>

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