Westermo RedFox Series - Manual (Page 172)

Westermo OS Management Guide
Version 4.17.0-0
8.1.6.1 Restrictions on inbound rate limiting
On RedFox units, some of the interface modules have hardware dependent re-
strictions regarding the inbound rate limit function. These restrictions are de-
scribed in this section.
Which Ethernet ports on RedFox have the restrictions de-
scribed here?
The restrictions apply to Ethernet ports of switchcores MV88E6095 and
MV88E6185. Please see Detailed System Overview page in the Web (
sec-
tion 4.4.2 ) or use the ”show system-information” in the CLI ( section 7.3.2 )
to find definite information about what switchcore(s) is used in your product.
An informative list of products/modules where the restrictions apply is given
below:
❼ RedFox Industrial (RFI) with Corazon platform[ 48 ]: Only Ethernet ports
on modules ”F4G” and ”F4G-T4G” (MV88E6185) have these restric-
tions.
❼ RedFox Industrial (RFI) with Atlas platform[
47 ]: Ethernet ports on all
modules except module ”F8” have these restrictions.
❼ RedFox Industrial Rack (RFIR)[
49 ]: Only Ethernet ports in the 8-port
group/module with Gbit/s ports (4 Gbit/s SFP and 4 Gbit/s Copper ports;
MV88E6185) have these restrictions.
❼ RedFox Rail (RFR) with Corazon platform[
50 ]: No Ethernet ports on the
RFR-212 have these restrictions.
❼ RedFox Rail (RFR) with Atlas platform (not for sale): All Ethernet ports
on the RFR-12 have these restrictions.
❼ TCP traffic: When the data rate rises above the given threshold on these
Ethernet ports, packets will be dropped in a manner ”punishing” TCP traffic
relatively hard. Thus, activating inbound rate limiting applicable to unicast
traffic may have an undesired impact on your TCP traffic,.
❼ Traffic types: When restricting the inbound rate limit to a certain traffic
type (broadcast, multicast and/or unknown unicast) on these Ethernet ports,
there are dependencies between the settings:
– Unknown unicast: Selecting ”unknown unicast” implies that ”unknown
unicast”, ”multicast” and ”broadcast” traffic will be subject to inbound
rate limiting.
– Multicast: Selecting ”multicast” implies that ”multicast” and ”broad-
cast” traffic will be subject to inbound rate limiting.
172 ➞ 2015 Westermo Teleindustri AB