Nortel Networks WEB OS 212777 - Manual (Page 442)

Web OS 10.0 Application Guide
442 n Chapter 17: Bandwidth Management
212777-A, February 2002
Overview
To manage bandwidth, create one or more bandwidth management contracts. The switch uses
these contracts to limit individual traffic flows.
Figure 17-1 Bandwidth Management: How It Works
Each contract comprises the following:
n
A classification policy where certain frames are grouped together
n
A bandwidth policy specifying usage limitations to be applied to these frames
N OTE – At any given time, up to 1024 contracts can be created for a single Alteon AD4 or
Alteon 184 Web switch.
Internet
1. Client buys a contract
(for example, a VIP address)
2. Administrator configures
bandwidth policy and contract
3. Classification is done
on ingress port of switch
4. Bandwidth management done on
egress port of switch. Can optionally
set TOS values to reflect usage rate
5. TOS value (optional)
affects router bandwidth
Web Switch