There are two possible scenarios here. One is to divide the user community
into two - half will use one gateway, the other will use the second gateway.
To accomplish this 2 HSRP groups will be configured on the routers. Each
router will be active for one group, and backup for the other group. 2 DHCP
servers will then need to be setup, each serving half of the scope with the
gateway set to one of the HSRP groups. This solution will, in principle,
divide the traffic evenly. Obviously, in practice, several issues such as
traffic pattern, and DHCP availability will need to be considered.
The second solution depends on whether you are running a routing protocol
with your ISPs. If you receive full or partial routes from your ISPs, then
it is possible to have one HSRP group, but enable ICMP redirect on the
routers. This will have the effect of using both links intelligently, using
which ever router has a better route/metric to the destination.
I don't think that HSRP can be used to invoke a backup link, depending on
the traffic threshold.
CM
-----Original Message-----
From: Sam Sneed
To: [EMAIL PROTECTED]
Sent: 29/06/01 20:58
Subject: HSRP [7:10428]
I was doing a little research on HSRP and had a question for anyone who
has
configured it. I read the whole RFC 2281 and could not find my answer
there.
If you have two routers running HSRP with T1 lines to the internet, 1 is
the
standby and one is the active. Does all traffic only go through the
active
at all times unless it dies? If so isn't it a waste not ever utilizing
the
T1 line thats on standby (of course until the active fails)?
If bandwidth exceeded 1.5MB would the second router kick in to share the
load or would it totally take over?
With these 2 routers acting as a single virtual router would throughput
ever be able to exceed 1.54 MB assuming each has its own T1 connection?
thanks
Message Posted at:
http://www.groupstudy.com/form/read.php?f=7&i=10496&t=10428
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