Setting Rate-Limits (2-Port X2 Module); Configuring Mac Rate-Limits - HP procurve 8100fl series Management And Configuration Manual

Performance Monitoring

Setting Rate-Limits (2-port X2 Module)

C a u t i o n
19-12
LAGs, and ports used within a LAG (link aggregated group), cannot be
■
used as a destination for port mirroring.
The mirror monitor-port command is not available from the Interface lag
context. However, it is available from the Interface port context, even on
a port that is a member of a LAG. So although you can enable mirroring
on a link aggregated port, this is not a supported configuration and
unexpected results may occur.
Setting Rate-Limits (2-port X2 Module)
The 2-Port X2 10GbE Interface Module (J8737A) is a 2:1 over-subscribed
module that carries traffic from two10-Gig ports in to a single 10-Gig interface.
Since the incoming aggregate traffic on both ports may exceed the 10-Gig
processing capacity, the module's MAC chip prioritizes certain control frames
(such as ARP, OSPF, IGMP, BPDU's, RIP, DHCP, PIM, and so forth) to ensure
that these frames never get dropped and network topologies remain intact. By
default, rate-control on the 2-port X2 module is applied in such a way that
bandwidth can be shifted between each port depending on the incoming rate
of traffic. However, if you need to define a preset limit to one or other of the
two ports, you can configure a MAC rate limit via the CLI.

Configuring MAC Rate-Limits

The mac-rate-limit command provides a manual method to configure an
inbound usage level on either of the two oversubscribed ports on the 2-port
X2 module. It can be used as a tool for enforcing maximum service level
commitments granted to network users. For example, in a scenario where one
port is connected to a high traffic network and the other port to a low traffic
network, you can pre-provision the appropriate bandwidth to each port.
Syntax: [no] mac rate-limit <1 – 10000>
Configures an inbound traffic rate limit on the port in terms
of Megabits/second. You can configure a rate limit from the
interface configuration context. The "no" form of the
command disables rate-limiting on the specified ports.