Peplink Balance_One Router Manual PDF (Setup & Configuration Guide)

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USER MANUAL

Peplink Balance Series

http://www.peplink.com

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12.3

WAN Health Check

To ensure traffic is routed to healthy WAN connections only, the Peplink Balance can periodically check

the health of each WAN connection.

Health

Check

settings

for

each

WAN

connection

can

be

independently

configured

via

Network>Interfaces>WAN

>

Health Check Settings

.

Enable Health Check by selecting

PING

,

DNS Lookup

, or

HTTP

from the

Health Check Method

drop-

down menu.

Health Check Settings

Method

This setting specifies the health check method for the WAN connection. This value can be

configured as

Disabled

,

PING

, or

DNS Lookup

. The default method is

DNS Lookup

. For

mobile Internet connections, the value of

Method

can be configured as

Disabled

or

SmartCheck

.

Health Check Disabled

When

Disabled

is chosen in the

Method

field, the WAN connection will always be considered as up. The

connection will

NOT

be treated as down in the event of IP routing errors.

Health Check Method: PING

ICMP ping packets will be issued to test the connectivity with a configurable target IP address or hostname. A WAN

connection is considered as up if ping responses are received from either one or both of the ping hosts.

PING Hosts

This setting specifies IP addresses or hostnames with which connectivity is to be tested via

ICMP ping. If

Use first two DNS servers as Ping Hosts

is checked, the target ping host

will be the first DNS server for the corresponding WAN connection. Reliable ping hosts with

a high uptime should be considered. By default, the first two DNS servers of the WAN

connection are used as the ping hosts.

Health Check Method: DNS Lookup

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DNS lookups will be issued to test connectivity with target DNS servers. The connection will be treated as up if DNS

responses are received from one or both of the servers, regardless of whether the result was positive or negative.

Health Check DNS

Servers

This field allows you to specify two DNS hosts’ IP address

es with which connectivity is to be

tested via DNS Lookup.

If

Use first two DNS servers as Health Check DNS Servers

is checked, the first two DNS

servers will be the DNS lookup targets for checking a connection's health. If the box is not

checked,

Host 1

must be filled, while a value for

Host 2

is optional.

If

Include public DNS servers

is selected and no response is received from all specified

DNS servers, DNS lookups will also be issued to some public DNS servers. A WAN

connection will be treated as down only if there is also no response received from the public

DNS servers.

Connections will be considered as up if DNS responses are received from any one of the

health check DNS servers, regardless of a positive or negative result. By default, the first

two DNS servers of the WAN connection are used as the health check DNS servers.

Health Check Method: HTTP

HTTP connections will be issued to test the connectivity with configurable URLs and strings to match.

URL1

WAN Settings>WAN Edit>Health Check Settings>URL1

The URL will be retrieved when performing an HTTP health check. When

String to Match

is left blank, a health check will pass if the HTTP return code is between 200 and 299

(Note: HTTP redirection codes 301 or 302 are treated as failures). When

String to Match

is

filled, a health check will pass if the HTTP return code is between 200 and 299 and if the

HTTP response content contains the string.

URL 2

WAN Settings>WAN Edit>Health Check Settings>URL2

If

URL2

is also provided, a health check will pass if either one of the tests passed.

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Other Health Check Settings

Timeout

This setting specifies the timeout in seconds for ping/DNS lookup requests. The default

timeout is set to

5 seconds

.

Health Check

Interval

This setting specifies the time interval in seconds between ping or DNS lookup requests.

Default health check interval is

5 seconds

.

Health Check

Retries

This setting specifies the number of consecutive ping/DNS lookup timeouts after which the

Peplink Balance is to treat the corresponding WAN connection as down. Default health

retries is set to

3

.Using the default

Health Retries

setting of

3

, the corresponding WAN

connection will be treated as down after three consecutive

timeouts.

Recovery Retries

This setting specifies the number of consecutive successful ping/DNS lookup responses

that must be received before the Peplink Balance treats a previously down WAN connection

as up again. By default,

Recover Retries

is set to

3

.Using the default setting, a WAN

connection that is treated as down will be considered as up again upon receiving three

consecutive successful ping/DNS lookup responses.

Note

If a WAN connection goes down, all of the WAN connections not set with a

Connection Type

of

Always-on

will

also be brought up until any one of higher priority WAN connections is up and found to be healthy. This design

could increase overall network availability.

For example, if WAN1, WAN2, and WAN3 have the connection types of

Always-on

,

Backup Priority Group 1

, and

Backup Priority Group 2

, respectively, when WAN1 goes down, WAN2 and WAN3 will try to connect. If WAN3 is

connected first, WAN2 will still be kept connecting. If WAN2 is connected, WAN3 will disconnect or abort making

connection.

Automatic Public DNS Server Check on DNS Test Failure

When the health check method is set to

DNS Lookup

and checks fail, the Balance will automatically perform DNS

lookups on some public DNS servers. If the tests are successful, the WAN may not be down but rather the target

DNS server malfunctioned. You will see the following warning message on the main page:

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USER MANUAL

Peplink Balance Series

http://www.peplink.com

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12.4

Bandwidth Allowance Monitor

The Bandwidth Allowance Monitor helps track your network usage. Please refer to section 26.7 to view

usage statistics.

Bandwidth Allowance Monitor

Action

If

Email Notification

is enabled, you will be notified by email when usage hits 75% and

95% of the monthly allowance.

If

Disconnect when usage hits 100% of monthly allowance

is checked, this WAN

connection will be disconnected automatically when the usage hits the monthly allowance.

It will not resume connection unless this option has been turned off or the usage has been

reset when a new billing cycle starts.

Start Day

This option allows you to define which day of the month each billing cycle begins.

Monthly Allowance

This field is for defining the maximum bandwidth usage allowed for the WAN connection

each month.

Disclaimer

Due to different network protocol overheads and conversions, the amount of data as reported by this Peplink device

is not representative of actual billable data usage as metered by your network provider. Peplink disclaims any

obligation or responsibility for any events arising from the use of the numbers shown here.

Page 90 / 234

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Peplink Balance Series

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12.5

Additional Public IP Settings

IP Address List

represents the list of fixed Internet IP addresses assigned by the ISP in the

event that more than one Internet IP address is assigned to this WAN connection. Enter the

fixed Internet IP addresses and the corresponding subnet mask, and then click the

Down

Arrow

button to populate IP address entries to the

IP Address List

.

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