Amer Networks E5Web GUI - Manual (Page 670)

before ssh-in and telnet-in, then traffic will reach std-in at the lowest precedence only
and hence compete for the 250 Kbps of available bandwidth with other traffic.
10.1.7. Pipe Groups
cOS Core provides a further level of control within pipes through the ability to split pipe
bandwidth into individual resource users within a group and to apply a limit and guarantee to
each user.
Individual users can be distinguished according to one of the following:
• Source IP
• Destination IP
• Source Network
• Destination Network
• Source Port (includes the IP)
• Destination Port (includes the IP)
• Source Interface
• Destination Interface
This feature is enabled by enabling the Grouping option in a pipe. The individual users of a group
can then have a limit and/or guarantee specified for them in the pipe. For example, if grouping is
done by source IP then each user corresponds to each unique source IP address.
A Port Grouping Includes the IP Address
If a grouping by port is selected then this implicitly also includes the IP address. For example,
port 1024 of host computer A is not the same as port 1024 of host computer B. It is the
combination of port and IP address that identifies a unique user in a group.
Grouping by Networks Requires the Size
If the grouping is by source or destination network then the network size must also be specified
In other words the netmask for the network must be specified for cOS Core.
Specifying Group Limits
Once the way the method of grouping is selected, the next step is to specify the Group Limits.
These limits can consist of one or both of the following:
• Group Limit Total
This value specifies a limit for each user within the grouping. For example, if the grouping is
by source IP address and the total specified is 100 Kbps then this is saying that no one IP
address can take more than 100 Kbps of bandwidth.
• Group Precedence Guarantees
Chapter 10: Traffic Management
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