Comtech EF Data CME-5000 Manual - Manual (Page 51)

Digicast Micro Encapsulator (MENCAP) Revision A
Device Management via User Interfaces MN/MENCAPEDC.IOM
Great care must be exercised when using promiscuous mode, since ALL traffic
that is present on the Ethernet segment is routed over this route. All management
traffic to and from or between redundant MENCAP 50s is not routed over the
promiscuous route.
On
The route is enabled when checked.
Name
The name assigned to a given route.
IP Address
The IP Address assigned to a given route. Note a Unicast route will fall within
the range 0.0.0.0 to 223.255.255.255 (excluding broadcast or reserved IP
addresses), and a multicast route will fall within the range of 224.0.0.0 to
239.255.255.255.
Subnet Mask (SM)
The Subnet Mask,(SM), defines the range of IP addresses that will be supported
by a particular route. It is represented by a 32-bit string of 1’s (representing the
network and subnet network ID) followed by 0’s (representing the host ID). This
string when logically ‘ANDED’ with the IP address, defines the network/subnet
IP address.
The following demonstrates how the subnet mask defines the IP address range –
the MENCAP 50 uses Classless Inter-Domain Routing (CIDR) notation for
setting the subnet masks:
•
255.255.255.255 is 0 bits (used for an explicit route for a single IP address)
•
255.255.255.0 is 24 bits (used for a C-Class Mask)
•
255.255.0.0 is 16 bits (used for a B-Class Mask)
•
255.0.0.0 is 8 bits (used for an A-Class Mask)
PID
The Program Identifier (PID) assigned to a particular route. PIDs do not have to
be unique and may be assigned to one or more routes.
MAC Address
The MAC address is assigned to a given route. For Unicast, this is typically the
MAC address the route is assigned to and is determined by the end device (next-
hop) to which the data is sent. However, for Multicast, this is derived as
previously described.
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