From: Bill Carter (bcarter@xxxxxxxxxxxxxx)
Date: Fri Dec 14 2001 - 19:09:06 GMT-3
Normally for this configuration I set up a 2nd Ethernet port on the routers
and run IBGP over that path.
isp1 isp2
| |
r1---X-over IBGP--r2
| |
|------HSRP-------|
|
|
PIX
This way if R1 is the HSRP primary and it receives a packet from the PIX it
can have an alternate path through R2 and forward it through R2. I have
verified this with traceroutes.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Lupi, Guy
Sent: Friday, December 14, 2001 3:35 PM
To: 'ccielab@groupstudy.com'
Subject: HSRP and Load Balancing
Ok, want to get something straight in my head. You have 2 routers, each is
connected to an ISP, you are running bgp. Each router has an ethernet port
that is on the same network, they are bgp neighbors. They are running hsrp,
connected to the same ethernet network is a PIX that has a default route to
the virtual ip of the hsrp group. Now, since they are bgp neighbors, they
exchange route information and have routes from each other to networks for
which they are best path. Now for the questions:
If you weren't running HSRP, the router would send an ICMP redirect to the
PIX if the other router was best path for that network, correct?
If you are running HSRP, what happens? I have this set up and the router
that is the active router for the HSRP group is getting all the traffic from
the PIX and forwarding it, nothing is getting sent to the standby router.
Is this the correct behavior, even if the standby router has a better path
to the destination network? Thanks.
r1 r2
| |
| |
|------------|-----------|
|
|
Pix
Guy H. Lupi
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