3com 5104M-FIB User Manual
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SET PROTOCOLS FORWARDING
SET PROTOCOLS
FORWARDING
FORWARDING
Use the SET PROTOCOLS FORWARDING command to create filters that filter
according to a specific type of protocol and define thresholds at which
broadcast packets of a certain protocol type are rate limited (discarded). For
example, use this feature to prevent broadcast storms by limiting ARP
broadcasts on a SwitchModule.
according to a specific type of protocol and define thresholds at which
broadcast packets of a certain protocol type are rate limited (discarded). For
example, use this feature to prevent broadcast storms by limiting ARP
broadcasts on a SwitchModule.
Format
set protocols
dsap
enet
slot.1
forwarding
snap
unknown
type field
all
high_priority
normal_priority
all
none
port
name
to_defaults
enable_rate_limit
disable_rate_limit
pkt_chan_port
none
name
slot.1
Selects a slot (1 through 17) for setting protocol forwarding. Subslot is
always 1.
always 1.
dsap
Specifies that the filter you create affects DSAP protocol packets.
enet
Specifies that the filter you create affects Ethernet protocol packets.
snap
Specifies that the filter you create affects SNAP (SubNetwork Access
Protocol) packets.
Protocol) packets.
to_defaults
Deletes all user-created entries from the protocol forwarding table. The
default protocol filters remain in the table.
default protocol filters remain in the table.
unknown
Specifies a protocol that is not a default protocol in the protocol
forwarding table.
forwarding table.
type field
Filters are based on the location of the protocol ID field (type field) in a
packet.
packet.
high_priority
The protocol you are creating a filter for transmits at higher priority
(experiences lower latency levels) than other protocols.
(experiences lower latency levels) than other protocols.
normal_priority
The protocol you are creating a filter for transmits at the normal priority
level.
level.
all
Specifies that all ports on the SwitchModule are affected.
none
Specifies that no ports on the SwitchModule are affected.
pkt_chan_port
Specifies the PacketChannel backplane port.
port
The port (1 through 24) you want to be affected by the filter you
create.
create.
name
The name (up to 16 characters) you want to identify this filter.
enable_rate_limit Limits the broadcast packets for this protocol.
disable_rate_limit Does not limit the broadcast packets for this protocol. This is the
factory setting.