© Copyright Lenovo 2017
Chapter 34: Virtual Router Redundancy Protocol
527
Active-Active Redundancy
In
an
active
‐
active
configuration,
shown
in
two
switches
provide
redundancy
for
each
other,
with
both
active
at
the
same
time.
Each
switch
processes
traffic
on
a
different
subnet.
When
a
failure
occurs,
the
remaining
switch
can
process
traffic
on
all
subnets.
For
a
configuration
example,
see
Figure 61.
Active
‐
Active
Redundancy
Hot-Standby Redundancy
The
primary
application
for
VRRP
‐
based
hot
‐
standby
is
to
support
Server
Load
Balancing
when
you
have
configured
Network
Adapter
Teaming
on
your
server
blades.
With
Network
Adapter
Teaming,
the
NICs
on
each
server
share
the
same
IPv4
address,
and
are
configured
into
a
team.
One
NIC
is
the
primary
link,
and
the
others
are
backup
links.
For
more
details,
refer
to
the
relevant
network
adapter
documentation.
The
hot
‐
standby
model
is
shown
in
.
Figure 62.
Hot
‐
Standby
Redundancy
Routing Switch
Enterprise
Internet
Servers
Switch 1
Switch 2
Active (subnet A and C)
Active (subnet B and D)
Active
Standby
Switch 1
Switch 2
Clients
Enterprise
Routing Switch
10.10.10.1
10.10.10.2
Servers
Interswitch
Link
Backup Link
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