Forwarding; Filtering; Network <Network_Name; Routing - 3Com 3C421600A Reference Manual

enable ip
address_pool_

filtering

enable ip

forwarding

enable ip
network
<network_name>
enable ip
rip
enable ip

routing

enable ip
security_option
commands
Permits packet filtering on all IP address pools. Use the show ip
command to view the current setting.
Allows all IP networks to forward (route) packets. You should use this
command only if you previously used the disable ip forwarding
command. Issue the show ip command to view the current setting.
Enables the specified IP network, which you previously defined using add
ip network. You can use list ip networks to see the currently
defined IP networks, as well as their current status.
Enables the RIP protocol for all IP networks. RIP protocol is set to NONE by
default. You can check the RIP version using show ip network
settings and modify it using set ip network. Use the show ip
routing command to view the current setting.
Allows all routing protocols for all IP networks. Currently, this command
enables only RIP, so it is functionally the same as enable ip rip. Use
the show ip routing command to view the current setting.
enable ip security_option drop_tcp_fragoffset1
enable ip security_option
disallow_all_header_options
enable ip security_option
disallow_source_route_options
Each of the above commands allows global filtering of all IP packets
containing the specified datagram fields (described below). This security
feature also syslogs the event when the packet is dropped. See the show
packet_logging settings command for accounting data.
The following datagram fields, when found, cause the packet to be
dropped:
fragment offset=1 — Packets with an offset equal to one are
discarded in accordance with RFC 1858. Some routers that may be
used on the same network with the RAS 1500 may be configured to
filter out specific traffic. In some cases these routers do not apply the
filter correctly for IP packets with an offset of 1. To avoid this
circumstance in the filtering mechanism, packets of this type can be
Enable Commands 91