Extreme Networks ExtremeWare XOS Guide Manual page 457

Figure 49 displays a basic ESRP topology.
Figure 49: Example of a basic ESRP topology
ESRP Core Switch #1
State Domain Group
Master corpnet1 0
Master corpnet2 0
Slave corpnet3 0
Corpnet1, Corpnet2
advertised ESRP
virtual mac:
00:E0:2B:00:00:80
ESRP-aware
NOTE
If you configure the Open Shortest Path First (OSPF) routing protocol and ESRP, you must manually configure an
OSPF router identifier (ID). Be sure that you configure a unique OSPF router ID on each switch running ESRP. For
more information on configuring OSPF, see
To participate in ESRP, the following must be true:
A VLAN can belong to only one ESRP domain.
●
The IP address for the VLANs participating in an ESRP domain must be identical.
●
All switches in the ESRP network must use the same election algorithm, otherwise loss of
●
connectivity, broadcast storms, or other unpredictable behavior may occur.
If you have an untagged master VLAN, you must specify an ESRP domain ID. The domain ID must
●
be identical on all switches participating in ESRP for that particular domain.
If you have a tagged master VLAN, ESRP uses the 802.1Q tag (VLANid) of the master VLAN for the
●
ESRP domain ID. If you do not use the VLANid as the domain ID, you must specify a different
domain ID. As previously described, the domain ID must be identical on all switches participating in
ESRP for that particular domain.
ExtremeWare XOS 11.3 Concepts Guide
ESRP-aware
Chapter 25.
ESRP Core Switch #2
State Domain Group
Slave corpnet1 0
Slave corpnet2 0
Master corpnet3 0
Corpnet3
advertised virtual mac:
00:E0:2B:00:00:80
ESRP-aware
EX_099
ESRP Concepts
457