Information Technology Reference
In-Depth Information
Then there will be about
domains, and the total number of connections is:
×
1
Normally, one client uses one computer at the same time and we assume each
computer generate 1
(request per second). We use the well-known NOX as con-
troller, and NOX could process about 30K
[23]. The number of
online
people or
customer on campus are usually less than 100,000, in enterprise is usually less than
500,000, in DC/AS (Autonomous System), it is usually less than 3,000,000 [14].
Table 3.
Number of domain and connection degree
People/Customer
(Online)
Domain
Number
Connection
Degree
Campus
≤
100,000
4
3
Enterprise
≤
500,000
17
16
3,000,000
100
99
DC or AS
The 16bits TCP port can support
2
65536
connections in theory, and it is
will very easily to support 3,000,000 (the numbers of online users in 99.5% ASes are
less than 3,000,000 [14]) online users with 99 connections. Thus, the estimate of table
3 is feasible.
With the EWBridge, about 99.5% of all the ASes can use the full mesh topology,
and about 0.5% Autonomous Systems need to use connection degree less than
1
.
5
Conclusion and Future Work
This paper designed a high-performance mechanism for heterogeneous NOSes to
exchange network view for enterprise, data center, and intra-domain networks. It
defined what information should be shared and how it is shared. For network privacy,
EWBridge proposed to abstract the physical network to a virtual network view.
Enabled by the characteristic of JSON, EWBridge supports NOSes from different
vendors. The implementation proved the feasibility of the EWBridge and the evalua-
tion proved that EWBridge is a high performance system. In the future, we are going
to deploy it to three SDN networks: SDN networks in CERNET, INTERNET2, and
CSTNET.
Acknowledgment.
Supported by the National High-tech R&D Program ("863" Pro-
gram) of China (No.2013AA010605), the National Science Foundation of China
(No.61073172), and National Key Basic Research Program ("973" Program) of China
(No. 2009CB320501).
