Alteon Application Switch Operating System Application Guide
Bandwidth Management
772 Document ID: RDWR-ALOS-V2900_AG1302
— To configure socket delivery usage, issue the following command:
Note: To obtain graphs with this data, the data must be collected and processed by an external
entity through SNMP.
Statistics and Management Information Bases
• For existing BWM classes—The MP maintains per-contract rate usage statistics. These are
obtainable via a private MIB.
• When BWM services are not enabled—Even when BWM is not enforced, the MP can still
collect classification information and report it, allowing an administrator to observe a network
for a while before deciding how to configure it. This feature can be disabled using
/cfg/bwm/
force dis
. When this command is used, no limits are applied on any contract.
Synchronizing BWM Configurations in VRRP
BWM configurations are optionally synchronized to a backup Alteon during VRRP synchronization.
However, port contracts and VLAN contracts are not synchronized. For more information on VRRP
and synchronized configurations, see Configuring VRRP Peers for Synchronization, page 569.
Packet Coloring (TOS bits) for Burst Limit
Whenever the soft limit is exceeded, optional packet coloring can be done to allow downstream
routers to use diff-serv mechanisms (that is, writing the Type-Of-Service (TOS) byte of the IP
header) to delay or discard these out-of-profile frames. Frames that are not out-of-profile are
marked with a different, higher priority value. This feature can be enabled or disabled on a per-
contract basis, using the wtos option under the contract menu (/cfg/bwm/cont <x> /wtos) to
enable/disable overwriting IP TOS.
The actual values used by Alteon for overwriting TOS values (depending on whether traffic is over or
under the soft TOS limit) are set in the bandwidth policy menu (
/cfg/bwm/pol <x>) with the utos
and
otos options. The values allowed are 0 through 255. Typically, the values specified should
match the appropriate diff-serv specification, but can be different, depending on the customer
environment.
>> Main# /cfg/sys/mmgmt/report {mgmt | data}
(Select to use the management or
data port to communicate with the
reporting server).
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