User Documentation
Planning
2053260000/05/2015
13
Redundancies
Redundancies increase the availability of networks.Redundancy can relate to
devices on the one hand, and to cabling on the other. Redundancies in the device
require special components in every case. This is always vendor-specic and is
not to be found in any standard. Redundancies for cabling are more common. For
this you can select between the standardised redundancy methods STP, RSTP as
well as vendor-specic methods.
Determine:
• Which components are are networked redundantly
• The art of redundancy:
• Standardised (STP, RSTP):
The advantage of this method is that it is supported by many managed switches.
The disadvantage is the sometimes very long recovery times
• Vendor-specic:
The advantage in this case is the signicantly shorter recovery time.
The disadvantage is that these protocols are only supported by one or a few
manufacturers and not compatible with each other.