IMPORTANT!
READ CAREFULLY BEFORE USE.
KEEP THIS GUIDE FOR FUTURE REFERENCE.
Graphics in this book may differ slightly from the product due to differences in operating systems,
operating system versions, or if you installed updated firmware/software for your device. Every
effort has been made to ensure that the information in this manual is accurate.
114IPSec VPN
116IPSec VPN Add Screen
121Technical Reference
121IPSec Architecture
122Encapsulation
123 IKE Phases
124Negotiation Mode
124IPSec and NAT
125VPN, NAT, and NAT Traversal
126ID Type and Content
127Pre-Shared Key
128Diffie-Hellman (DH) Key Groups
129Chapter 17: Certificates
129Local Certificates
130Create Certificate Request
132Load Signed Certificate
132Trusted CA
134View Trusted CA Certificate
135Import Trusted CA Certificate
136Chapter 18: Power Management
136Power Management
138Chapter 19: Multicast
138Multicast
140Chapter 20: Wireless
140Wireless Basic
143Wireless Security
Contents 5
147Wireless MAC Filter
148Wireless MAC Filter Add
149Wireless Advanced
152Wireless Station Info
153Wireless 5GHz Basic
156Wireless 5GHz Advanced Screen
157Wireless 5GHz WPS
159Push Button Configuration
160Wireless 5GHz MAC Filter
161Wireless MAC Filter Add
162Wireless 5GHz Bridge
163Wireless 5GHz Station Info
165Chapter 21: Voice
165 SIP Account
170SIP Server
176Dial Plan Rules
177Phone Region
178Call Rule
179Call History Summary
180Outgoing Calls
181Incoming Calls
181Technical Reference
190Quality of Service (QoS)
191Phone Services Overview
197Chapter 22: Diagnostics
197Diagnostics
198Ping/TraceRoute/Nslookup
199Chapter 23: Settings
199Backup Configuration Using the Web Configurator
200Restore Configuration Using the Web Configurator
201Restoring Factory Defaults
202Chapter 24: Logs
202Logs
202What You Need To Know
203System Log
204System Log Configuration
205Security Log
207Chapter 25: SNMP
Contents 6
207SNMP Agent
210Chapter 26: TR-069 Client
210TR-069 Client
212Chapter 27: Internet Time
212Internet Time
214Chapter 28: User Passwords
214User Passwords
215Chapter 29: GPON Password
215GPON Password
216Chapter 30: Update Software
216Update Software
218Chapter 31: Reboot
218Restart Using the Web Configurator
219Chapter 32: Troubleshooting
219Overview
219Power, Hardware Connections, and LEDs
220Router Access and Login
221Internet Access
222Wireless Internet Access
223Phone Calls and VoIP
224UPnP
225Appendix A: Safety Warnings
Contents 7
CHAPTER 1
GPT-2541 GNAC
Set-Top Box
VoIP Phone
Chapter 1
Introduction
1.1 Overview
The GPT-2541GNAC GPON ONT combines high-speed Fiber Internet access with a built-in switch, a
firewall and high-speed wireless networking capability. It has a phone port for making calls over the
Internet (Voice over IP or VoIP). It also supports IPTV service when available from your service
provider.
The following figure shows an application example of the Router. The Router is connected to a
p
rovides IPTV, VoIP services as well as wired and wireless Internet access to home devices on the
LAN.
Figure 1 Application Example
1
Chapter
Chapter 1 Introduction8
1.2 Hardware Connection
Make sure to use the proper cables and power adapter to connect the Router.
Figure 2
The following table explains the connect
Rear Panel
ors and buttons on the rear panel.
Table 1 Rear Panel
CONECTORDESCRIPTION
12V-2AConnect the provided power adapter to the 12V-1A power connector. Attach the
po
wer adapter to a proper power source.
ON/OFFUse this button to turn the Router on or off.
Fibra ÓpticaConnect the service provider’s fiber optic cable to this port.
Tel fUse a telephone cable to connect the Router to a VoIP phone for VoIP service.
Eth 1-4Use an Ethernet cable to connect a compu
configuration and/or Internet access.
Wifi/WPSUse this button to enable or disable the 2.4 GHz WiFi and WPS features on the Router.
By default, WiFi is enabled on the Router. Press this bu
To enable the WPS feature, press the button for more than 3 seconds The WPS LED on
e front panel will flash green while the Router sets up a WPS Connection with the
th
wireless device.
Note: To activate WPS, you must enable WPS in the Router and in another wireless
vice within two minutes of each other.
de
ter to one of these ports for initial
tton for 1 second to turn it off.
Chapter 1 Introduction9
Table 1 Rear Panel (continued)
CONECTORDESCRIPTION
Wifi5GHz/WPSUse this button to enable or disable the 5 GHz WiFi and WPS features on the Router.
By default, WiFi is enabled on the Router. Press this button for 1 second to turn it off.
To enable the WPS feature, press the button for more than 3 seconds The WPS LED on
the front panel will flash green while the Router sets up a WPS Connection with the
wireless device.
Note: To activate WPS, you must enable WPS in the Router and in another wireless
device within two minutes of each other.
ResetUse this button to restore the default settings of the Router. Press this button for 10
seconds to restore default values. Press 1 second or longer to restart it.
Note: If you reset the Router, you will lose all configurations that you had previously
and the password will be reset to the defaults.
Chapter 1 Introduction10
1.3 LEDs (Lights)
The following graphic displays the labels of the LEDs.
Figure 3 Fr
ont Panel LEDs
Figure 4 Rear Panel
Table 2 LED Descriptions
LEDs
LEDCOLORSTATUSDESCRIPTION
PowerBlueOnThe Router is receiving power and ready for use.
RedOnThe Router has hardware failure.
BlinkingThe Router detected an error while self-testing.
OffThe Router is not receiving power.
Eth 1-4BlueOnThe Router has a successful Ethernet connection with a device on
the LA
N.
BlinkingThe Router is sending or receiving data to/from the LAN.
OffThe Router does not have an Ethernet connection with the LAN.
Chapter 1 Introduction11
Table 2 LED Descriptions (continued)
LEDCOLORSTATUSDESCRIPTION
Tel fBlueOnThe SIP registration is successful.
BlinkingThe Router is negotiating the SIP registration.
GreenOnThere is incoming or outgoing voice traffic.
RedBlinkingThe Router has failed to register the VoIP service.
OffThere is no VoIP service.
Wifi/WPS
Wifi5GHz/
WPS
Internet
BlueOnThe 2.4 GHz wireless is on.
BlinkingThe 2.4 GHz WPS is activated. It also bli
setting up a WPS connection.
OffThe 2.4 GHz wireless is not activated.
BlueOnThe 5 GHz wireless is on.
BlinkingThe 5 GHz WPS is activated. It also b
up a WPS connection.
OffThe 5 GHz wireless is not activated.
BlueOnThe Router has a PPP connection but no traffic.
It has a WAN IP address (either static or assigned by a DHCP server),
PPP neg
BlinkingStartup process. The Router is running an automatic startup
diagnostic pr
Fast BlinkingThe Router is sending or receiving IP traffic.
The Router is synchronizing with the PON. Activation phase. The
Rou
RedOnThe Router attempted to make an IP conn
causes are no response from a DHCP server, no PPPoE response,
PPPoE authentication failed.
The GPON port failed during the POST (Power On Self Test) or there
s an error due to hardware or firmware failure.
i
otiation was successfully completed (if used).
ocess on the GPON port.
ter is negotiating a PPP connection.
nks when the Router is
links when the Router is setting
ection but failed. Possible
BlinkingThe GPON port’s optical power level is below the threshold.
OffThere is no Internet connection.
1.4 Advanced Configuration
Do the following to access the advanced configuration screens.
Chapter 1 Introduction12
cess the Client Wizard screens. Enter the IP address: http://192.168.1.1.
1Ac
2The login screen appears. The default password israndom. Please refer to the label sticker at the
bottom of the device. Enter the password. Click Entrar to enter the Client Wizard.
3The main screen appears.
Chapter 1 Introduction13
lick the Menu button and then Configuración avanzada.
4C
5Click Aceptar.
Chapter 1 Introduction14
6The
advanced configuration screens display. Use the menu on the left to navigate the screens. Refer
to the rest of this guide for details about the screens. Click Logout to exit the configuration screens.
Chapter 1 Introduction15
CHAPTER 2
Chapter 2
Device Info
2.1 Device Info Summary
Click Device Info > Summary to open this screen with general device and WAN connection status
information.
Figure 5
Device Info Summary
2
Chapter
Table 3 Device Info Summary
LABELDESCRIPTION
Board IDThis field displays the ID number of the circuit board in the Router.
Symmetric
CPU Thr
Build
Timestamp
Software
Ve
Chapter 2 Device Info16
eads
rsion
This field displays the number of threads in the Router’s CPU.
This field displays the date (YYMMDD) and time (
This field displays the current version of the firmware inside the Router.
HHMM) of the firmware in the Router.
Table 3 Device Info Summary (continued)
LABELDESCRIPTION
Bootloader
(CFE) Version
Wireless
Driver Version
Voice Service
Version
UptimeThis field displays how long the Router has been running since it last started up.
LAN IPv4
Address
Default
Gat ewa y
Primary DNS
Server
Secondary
DNS Server
LAN IPv6 ULA
Address
LAN IPv6
Address
(Global)
This field displays the version of bootloader the Router is using.
This field displays the version of the driver for the Router’s wireless chipset.
This field displays the version of the VoIP software the Router is using.
This field displays the current IP address of the Router in the LAN.
This field displays the IP address of the gateway through which the Router sends traffic
unless it matches a static route.
The Router tries this DNS server first when it needs to resolve a domain name into a
numeric IP address.
The Router uses this DNS server first when it needs to resolve a domain name into a
numeric IP address if the primary DNS server does not respond.
This field displays the current unique local address (ULA). This is a unique IPv6 address
for use in private networks but not routable in the global IPv6 Internet.
This field displays the current global IPv6 address of the Router.
LAN IPv6 Link
Local Address
Default IPv6
Gat ewa y
Date/TimeThis field displays the Router’s current day of the week, month, hour, minute, second,
This field displays the current IPv6 address of the Router in the LAN.
This field displays the IPv6 address of the gateway through which the Router sends IPv6
traffic unless it matches a static route.
and year.
Chapter 2 Device Info17
2.2 WAN Info
Click Device Info > WAN to open this screen which lists the Router’s WAN connections and their
status.
Figure 6
WAN Info
Table 4 WAN Info
LABELDESCRIPTION
InterfaceThis shows the name of the WAN interface. veip0 s
is the foundation for veip0/* which are virtual WAN interfaces of the physical GPON line.
The ppp0.* indicates a PPP connection.
The number after the dot (.) r
through this connection. The number after the underscore (_) represents the index
number of connections through the same interface.
(null) means the entry is no
DescriptionThis is the service name of this connection.
TypeThis shows the method of encapsulation used b
over Ethernet, or bridging).
epresents the VLAN ID number assigned to traffic sent
t valid.
y this connection (IP over Ethernet, PPP
tands for a virtual Ethernet card and
VlanMuxIDThis indicates the VLAN ID number assigned to traffic sent through this connection. This
disp
lays N/A when there is no VLAN ID number assigned.
IPv6This displays whether or not IPv6 is enabled on the interface.
Igmp PxyThis shows whether IGMP (Internet Group Multicast Protocol) proxy is activated or not
for this connection.
Igmp Src EnblThis shows whether IGMP source enable is activated or no
source enable has the Router add routing table entries based on the IGMP traffic.
connection. MLD is not available when the connection uses the bridging service.
MLD Src EnblThis shows whether MLD source enable is activated or not for this connection. MLD
sour
ce enable has the Router add routing table entries based on the MLD traffic.
NATThis shows whether NAT is activated or not for this interface. N
the connection uses the bridging service.
StatusThis displays the connection state or Uncon
configured.
IGMP is not available when the connection uses the bridging service.
t for this connection. IGMP
(MLD) proxy is activated or not for this
AT is not available when
figured if the interface has not yet been
Chapter 2 Device Info18
Table 4 WAN Info (continued)
LABELDESCRIPTION
IPv4 AddressThis displays the interface’s current IPv4 address if it has one.
IPv6 AddressThis displays the interface’s current IPv6 address if it has one.
2.3 LAN Statistics
Click Device Info > Statistics > LAN to open this screen of traffic statistics counters for the Router’s
wired and wireless LAN interfaces. Use the button to clear the counters.
Figure 7
LAN Statistics
Table 5 LAN Statistics
LABELDESCRIPTION
Interface These fields identify the LAN interfaces. eth
~ 4. wlo represents the wireless LAN interface.
Received /
Transmitted
These fields display the number of bytes, packets, error packets, and dropped packets
for each interface.
0 ~ eth3 represent the ethernet LAN ports 1
Received
BytesThis indicates the number of bytes received on this interface.
PktsThis indicates the number of packets received on this interface.
ErrsThis indicates the number of frames with
DropsThis indicates the number of received packets dropped on this interface.
Transmitted
BytesThis indicates the number of bytes transmitted on this interface.
errors received on this interface.
Chapter 2 Device Info19
Table 5 LAN Statistics (continued)
LABELDESCRIPTION
PktsThis indicates the number of transmitted packets on this interface.
ErrsThis indicates the number of frames with errors transmitted on this interface.
DropsThis indicates the number of outgoing packets dropped on this interface.
Reset
Statistics
Click this to clear the screen’s statistics counters.
Chapter 2 Device Info20
2.4 WAN Statistics
Click Device Info > Statistics > WAN Service to display the total, multicast, unicast, and broadcast
traffic statistics counters for the Router’s WAN interfaces. Use the button to clear the counters.
Figure 8
WAN Statistics
Table 6 WAN Statistics
LABELDESCRIPTION
InterfaceThis shows the name of the WAN interface used by this connection.
veip0 stands for a virtual Ethernet card and is the foundation for veip0/* which are
virtual WAN interfaces of the physical GPON line. The ppp0.* indicates a PPP
connection.
eth0 ~ eth3 r
which are virtual WAN interfaces of the physical Gigabit Ethernet line.
The number after the dot (.) r
through this connection. The number after the underscore (_) represents the index
number of connections through the same interface.
(null) means the entry is no
epresent the Ethernet LAN ports 1 ~ 4 and are the foundation for eth0/*
epresents the VLAN ID number assigned to traffic sent
t valid.
DescriptionThis is the service name of this connection.
Received
BytesThis indicates the number of bytes received on this interface.
PktsThis indicates the number of packets received on this interface.
ErrsThis indicates the number of frames with
DropsThis indicates the number of received packets dropped on this interface.
Transmitted
BytesThis indicates the number of bytes transmitted on this interface.
PktsThis indicates the number of transmitted packets on this interface.
ErrsThis indicates the number of frames with
errors received on this interface.
errors transmitted on this interface.
Chapter 2 Device Info21
Table 6 WAN Statistics (continued)
LABELDESCRIPTION
DropsThis indicates the number of outgoing packets dropped on this interface.
Reset Click this to clear the screen’s statistics counters.
2.5 Route Info
Click Device Info > Route to display the Router’s IPv4 and IPv6 routing tables.
Figure 9
Route Info
Table 7 Route Info
LABELDESCRIPTION
DestinationThis displays the IP address to which this entry applies.
Gat ewa y This displays the gateway the Router uses to send tr
address.
Subnet Mask This displays the subnet mask of the destination net.
Flag This displays whether the route is up (U), t
(!), the route uses a gateway (G), the target is in the neighbor cache (C), the target is a
host (H), reinstate route for dynamic routing (R), the route was dynamically installed by
redirect (D), or modified from redirect (M).
he Router drops packets for this destination
affic to the entry’s destination
Metric The metric represents the “cost” of transmission for routing purposes. IP routing uses
hop count as the measurement of cost, with a minimum of 1 for directly-connected
networks.
Service The name of a specific service to which the route applies if one is specified.
Interface The interface through which this route sends traffic.
Chapter 2 Device Info22
2.6 ARP Info
Click Device Info > ARP to display the Router’s IPv4 Address Resolution Protocol and IPv6 neighbor
tables.
This screen lists the IP addresses the Router has mapped to MAC addresses.
Figure 10
ARP Info
Table 8 ARP Info
LABELDESCRIPTION
IPv4 / IPv6
ad
dress
Flags Static - static entry, Dynamic - dynamic entry that is not yet complete, Complete -
HW Address The MAC address of the device with the listed IP address.
Device The interface through which the Router sends traffic to the device listed in the entry.
The learned IP address of a device connected to one of the system’s ports.
dynamic entry that is complete.
Chapter 2 Device Info23
2.7 DHCP Leases
Click Device Info > DHCP to display the Router’s list of IP address currently leased to DHCP clients.
Figure 11 DHCP Leases
Table 9 DHCP Le
LABELDESCRIPTION
Hostname This field displays the name used to identify thi
MAC Address This field displays the MAC address to which the IP addr
IP Address This field displays the IP address currently assigned to a DHCP client or reserved for a
Expires In This field displays how much longer the IP address is leased to the DHCP client.
ases
s device on the network (the computer
name). The Router learns these from the DHCP client requests. “None” shows here for a
static DHCP entry.
ess is currently assigned or for
which the IP address is reserved. Click the column’s heading cell to sort the table entries
by MAC address. Click the heading cell again to reverse the sort order.
specific MAC address. Click the column’s heading cell to sort the table entries by IP
address. Click the heading cell again to reverse the sort order.
Chapter 2 Device Info24
CHAPTER 3
Chapter 3
WAN
3.1 GPON Layer2 Interface
The Router must have a layer-2 interface to allow users to use the GPON port to access the Internet.
Log into the Router’s Web Configurator and click Advanced Setup > Layer2 Interface > GPON Interface to manage the GPON layer-2 interface.
The GPON and ETH layer-2 interfaces cannot work at the same time.
Figure 12 GPON Interface
3
Chapter
The following table describes the fields in this screen.
Table 10 GPON In
LABELDESCRIPTION
Interface/(Name)The name of a configured layer-2 interface. veip0 stands fo
Connection ModeThis shows the connection mode of the layer-2 interface.
RemoveSelect an interface and click the Remo
AddClick this button to create a new layer-2 interface. Y
terface
and is the foundation for veip0/* which are virtual WAN interfaces of the physical
GPON line.
The number after the dot (.) r
through this connection. The number after the underscore (_) represents the index
number of connections through the same interface.
layer-2 interface when a WAN service is associated with it.
2 interface at a time.
epresents the VLAN ID number assigned to traffic sent
ve button to delete it. You cannot remove a
ou can only have one GPON layer
r a virtual Ethernet card
Chapter 3 WAN25
3.1.1 Layer-2 GPON Interface Configuration
Click the Add button in the Layer2 Interface: GPON Interface screen to open the following screen.
Use this screen to create a new layer-2 interface.
Figure 13 GPON In
Select the GPON port and click Apply/Save.
The following table describes the fields in this screen.
Table 11 GPON In
LABELDESCRIPTION
Select a GPON
port
BackClick this button to return to the previous scr
Apply/SaveClick this button to save your changes and go back
terface Configuration
terface Configuration
Select a GPON port. veip0 stand
for veip0/* which are virtual WAN interfaces of the physical GPON line.
s for a virtual Ethernet card and is the foundation
een without saving any changes.
to the previous screen.
3.2 Ethernet Layer2 Interface
The Router must have a layer-2 interface to allow users to use the Gigabit Ethernet port to access
the Internet. Log into the Router’s Web Configurator and click Advanced Setup > Layer2 Interface > ETH Interface to manage the Ethernet layer-2 interface.
The GPON and ETH layer-2 interfaces cannot work at the same time.
Figure 14 ETH Interface
Chapter 3 WAN26
The following table describes the fields in this screen.
Table 12 ETH
LABELDESCRIPTION
Interface/(Name)The name of a configured layer-2 interface. eth
Connection ModeThis shows the connection mode of the layer-2 interface.
RemoveSelect an interface and click the Remo
AddClick this button to create a new layer-2 interface. Y
Interface
ports 1 ~ 4.
layer-2 interface when a WAN service is associated with it.
interface at a time.
3.2.1 Ethernet Layer-2 Interface Configuration
Click the Add button in the Layer2 Interface: ETH Interface screen to open the following screen.
Use this screen to create a new layer-2 interface.
Figure 15 ETH Interfa
ce Configuration
0 ~ eth3 represent the ethernet LAN
ve button to delete it. You cannot remove a
ou can only have one ETH layer 2
The following table describes the fields in this screen.
Table 13 ETH Interface
LABELDESCRIPTION
Select a ETH portSelect an Ethernet port. eth
BackClick this button to return to the previous scr
Apply/SaveClick this button to save your changes and go back
3.3 WAN Service
Use this screen to change your Router’s WAN settings. Click Advanced Setup > WAN Service. The
summary table shows you the configured WAN services (connections) on the Router.
Chapter 3 WAN27
Configuration
0 ~ eth3 represent the ethernet LAN ports 1 ~ 4.
een without saving any changes.
to the previous screen.
To use NAT, firewall or IGMP proxy in the Router, you need to configure a WAN connection with
PPoE or IPoE.
P
When a layer-2 interface is in VLAN MUX Mode, you can configure up to five WAN services
on the Router.
Figure 16 WAN Service
Table 14 WAN Service
LABELDESCRIPTION
InterfaceThis shows the name of the interface used by this connection.
veip0 stands for a virtual Ethernet card and is the foundation for veip0/* which are virtual
WAN interfaces of the physical GPON line. The ppp0.* indicates a PPP connection.
The number after the dot (.) r
through this connection. The number after the underscore (_) represents the index number
of connections through the same interface.
means the entry is not valid.
(null)
epresents the VLAN ID number assigned to traffic sent
DescriptionThis is the service name of this connection.
TypeThis shows the method of encapsulation used by this connection (IP over Ethernet, PPP
o
ver Ethernet, or bridging).
IPThis displays the IP address the
does not have an IP address.
ReleaseUse the buttons in this column to renew, r
displays N/A for a connection with a static IP address.
Vlan8021pThis indicates the 802.1P priority level assigned to tr
displays N/A when there is no priority level assigned.
VlanMuxIdThis indicates the VLAN ID number assigned to tr
displays N/A when there is no VLAN ID number assigned.
VlanTpidThis field displays the VLAN Tag Protocol Identi
from 0000 to FFFF that the OLT adds to the matched packets.
Igmp ProxyThis shows whether IGMP (Internet Group Multicast Protocol) proxy is activated or not for
this connection. IGMP is no
connection uses. This displays N/A when the connection
elease, or connect a WAN connection. This
affic sent through this connection. This
affic sent through this connection. This
fier (TPID), a four-digit hexadecimal number
t available when the connection uses the bridging service.
Chapter 3 WAN28
Table 14 WAN Service (continued)
LABELDESCRIPTION
NATThis shows whether NAT is activated or not for this interface. NAT is not available when the
connection uses the bridging service.
IPv6This shows whether IPv6 is activated or not for this connection.
the connection uses the bridging service.
Mld ProxyThis shows whether Multicast Listener Discovery (MLD) proxy is activated or not for this
connection. MLD is not available when the connection uses the bridging service.
MLD SourceThis shows whether MLD source is activated or not for this connection.
RemoveSelect an interface and click the Remo
interface when a WAN service is associated with it.
EditClick the Edi
Click the Remo
AddClick Add to cr
t button to configure the WAN connection.
ve icon to delete the WAN connection.
eate a new connection.
3.3.1 WAN Connection Configuration
Click the Edit or Add button in the WAN Service screen to configure a WAN connection.
3.3.1.1 WAN Interface
This screen displays when you add a new WAN connection.
IPv6 is not available when
ve button to delete it. You cannot remove a layer-2
Figure 17 W
AN Configuration: WAN Interface
Table 15 WAN Configuration: WAN Interface
LABELDESCRIPTION
Select a layer 2
interfac
service
e for this
Select the port this WAN service uses for data transmission.
veip0/veip0 is the GPON p
eth0 ~ eth
3 represent the ethernet LAN ports 1 ~ 4.
ort.
Chapter 3 WAN29
Table 15 WAN Configuration: WAN Interface (continued)
LABELDESCRIPTION
BackClick this button to return to the previous screen.
NextClick this button to continue.
3.3.1.2 WAN Service Configuration
This screen displays after you select the WAN interface for a new WAN connection.
Figure 18 W
AN Configuration: WAN Service Configuration
Table 16 WAN Configuration: WAN Service Configuration
LABELDESCRIPTION
Select WAN
servic
e type
Allow as IGMP
Multicast Sour
Select the method of encapsulation used by your ISP.
Choices are PPP
This displays when you select the Bridging service type. Select this to have
ce
the Router add routing table entries based on the IGMP traffic.
over Ethernet (PPPoE), IP over Ethernet and Bridging.
Chapter 3 WAN30
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