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Chapter 59 Packet Filter Commands

IES-1248-51V User’s Guide

438

59.1.1 Packet Filter Show Command Example

The following example displays the packet type filter settings for xDSL ports 1 and

2. “V” displays for the packet types that the IES-1248-51V is to accept on the

port. “-” displays for packet types that the IES-1248-51V is to reject on the port

(packet types that are not listed are accepted). When you use PPPoE only,”#”

switch pktfilter set <portlist>

[filter]

Sets the packet type filter for the specified xDSL

port(s).

filter: Select the filter(s) separated by a space from

the following choices:

• pppoe: Reject PPPoE packets. (Point-to-Point

Protocol over Ethernet) relies on PPP and Ethernet.

PPPoE is a specification for connecting the users on

an Ethernet to the Internet through a common

broadband medium, such as a single xDSL line,

wireless device or cable modem.

• ip: Reject IP packets. Internet Protocol. The

underlying protocol for routing packets on the

Internet and other TCP/IP-based networks.

• arp: Reject ARP packets. Address Resolution

Protocol is a protocol for mapping an Internet

Protocol address (IP address) to a physical

computer address that is recognized in the local

network.

• netbios: Reject NetBIOS packets. (Network Basic

Input/Output System) are TCP or UDP packets that

enable a computer to connect to and communicate

with a LAN.

• dhcp: Reject DHCP packets. Dynamic Host

Configuration Protocol automatically assigns IP

addresses to clients when they log on. DHCP

centralizes IP address management on central

computers that run the DHCP server program.

DHCP leases addresses, for a period of time, which

means that past addresses are “recycled” and made

available for future reassignment to other systems.

• eapol: Reject EAPoL packets. EAP (Extensible

Authentication Protocol, RFC 2486) over LAN. EAP is

used with IEEE 802.1x to allow additional

authentication methods (besides RADIUS) to be

deployed with no changes to the access point or the

wireless clients.

• igmp: Reject IGMP packets. Internet Group

Multicast Protocol is used when sending packets to a

specific group of hosts.

• none: Accept all packets.

H/H

switch pktfilter pppoeonly

Sets the IES-1248-51V to allow only PPPoE traffic on

the specified xDSL port(s). The system will drop any

non-PPPoE packets.

H/H

Table 163 pktfilter Command Summary (continued)

COMMAND DESCRIPTION P

1 2 ... 433 434 435 436 437 438 439 440 441 442 443 ... 653 654

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