The key feature, that is most valuable to us, is the Split-Multi link Trunking (SMLT). This feature allows us to create a very redundant/fault tolerant network across multiple data centers in multiple locations using our own fiber runs. We have been very fortunate to have such redundancy in place saving us some major outages. This redundancy has also allowed network upgrades to have much less of an impact to the customers. Also, the different interfaces provided with various modules have allowed us to migrate from one technology to another in various areas of our network without a complete overhaul, but in stages.
Another feature it has, is that the platform has changed both in software and hardware over the years. They have done it with new technology, features, and capacity, by simply upgrading/adding newer modules to adapt to our ever changing and growing network needs.
It has worked extremely well in our environment, and grown with us as our needs have grown over the years. Two ERS8800’s make up our core with another two in an aggregation layer servicing our customer segments.
The redundancy gained by utilizing SMLT has proven itself invaluable during a couple of events that could have been devastating to our bottom line. We experienced a major fiber cut between two data centers, and, although it affected several of our uplinks, the redundancy automatically kept our production network running, and the customers were unaffected as business went on as usual from their perspective. This redundancy also allowed us to move one of our data centers from one location to another without disrupting production and allowing us to make several of the migrations during work hours.