Table of Contents

1 Auto Detect Configuration Commands· 1-1

Auto Detect Configuration Commands· 1-1

detect-group· 1-1

detect-list 1-2

display detect-group· 1-2

ip route-static detect-group· 1-3

option· 1-4

retry· 1-5

standby detect-group· 1-5

timer loop· 1-6

timer wait 1-7

 

Auto Detect Configuration Commands

 

 

detect-group

Syntax

detect-group group-number

undo detect-group group-number

View

System view

Parameters

group-number: Detected group number ranging from 1 to 50.

Description

Use the detect-group command to create a detected group and enter detected group view.

Use the undo detect-group command to remove a detected group.

 

 

Examples

# Create detected group 10.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10]

detect-list

Syntax

detect-list list-number ip address ip-address [ nexthop ip-address ]

undo detect-list list-number

View

Detected group view

Parameters

list-number: Sequence number of the IP address to be detected. This argument ranges from 1 to 10.

ip address ip-address: Specifies the destination IP address (in dotted decimal notation) to be detected.

nexthop ip-address: Specifies the next hop IP address for Auto Detect.

Description

Use the detect-list command to add a detected object to a detected group and specify the detection sequence number of the detected object.

Use the undo detect-list command to remove a specified detected object.

When performing Auto Detect, a device detects the configured detected objects in the order specified by their sequence numbers.

If you have configured multiple detected objects, you can use the option command to set the logical relationships between the detected objects.

Related commands: option.

Examples

# Add the detected object 202.13.1.55 to detected group 10, with the detection sequence number set to 1, and the next hop IP address set to 1.2.3.4.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10] detect-list 1 ip address 202.13.1.55 nexthop 1.2.3.4

display detect-group

Syntax

display detect-group [ group-number ]

View

Any view

Parameters

group-number: Detected group number ranging from 1 to 25.

Description

Use the display detect-group command to display the configuration of the specified detected group or all detected groups.

Examples

# Display the configuration of detected group 1.

<device> display detect-group 1

detect-group 1 :

 detect loop time(s) : 15

   ping wait time(s) : 2

  detect retry times : 2

    detect ip option : and

         group state : not detecting

 register module num : 0

     detect ip count : 1

detect-list  ip address       next hop

1            202.13.1.55      1.2.3.4

Table 1-1 display detect-group command output description

Field	Description
detect-group 1	Detected group number 1
detect loop time(s)	Detecting interval, in seconds.
ping wait time(s)	Timeout time of a ping operation, in seconds.
detect retry times	Number of retries of an auto detect operation.
detect ip option	The logic relationship between the detected objects in the detected group. It can be and or or.
group state	Current state of the detected group
register module num	Number of registered modules (that is, the number of the modules utilizing the detected group.)
detect ip count	Number of the IP addresses contained in a detected group
detect-list	Sequence number of an IP address contained in a detected group
ip address	IP address to be detected
next hop	Next hop IP address

 

ip route-static detect-group

Syntax

ip route-static ip-address { mask | mask-length } { interface-type interface-number | next-hop } [ preference preference-value ] [ reject | blackhole ] detect-group group-number

undo ip route-static ip-address { mask | mask-length } [ interface-type interface-number | next-hop ] [ preference preference-value ]

View

System view

Parameters

ip-address: IP address in dotted decimal notation.

mask: Subnet mask.

mask-length: Length of the subnet mask, that is, the number of successive bits in the subnet mask whose values are 1.

interface-type interface-number: Interface type and interface number.

next-hop: Next hop IP address in dotted decimal notation.

preference-value: Priority of the route. This argument ranges from 1 to 255.

reject: Specifies the route to be unreachable. If you specify this keyword when executing this command, any packet destined for the specified IP address is discarded, and the system informs the source that the destination is unreachable.

blackhole: Specifies the route to be a blackhole route. If you specify this keyword when executing this command, all outbound interfaces of the static route are the NULL 0 interfaces regardless of the next hop. In addition, the system discards any packet transmitted along this route without informing the source.

group-number: Detected group number ranging from 1 to 50.

Description

Use the ip route-static detect-group command to configure a static route, whose validity depends on detecting results as follows:

l          The route is valid when the detecting result is reachable.

l          The route is invalid when the detecting result is unreachable.

Use the undo ip route-static command to remove an existing static route.

Examples

# Configure a static route to 192.168.1.5/24 with 192.168.0.2 as the next hop, and control the static route validity using the detecting result of detected group 10.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] ip route-static 192.168.1.5 24 192.168.0.2 detect-group 10

After the configuration, if detected group 10 is reachable, the static route is valid; if detected group 10 is unreachable, the static route is invalid.

option

Syntax

option [ and | or ]

undo option

View

Detected group view

Parameters

and: Specifies the relationship between detected objects as logic AND, which means that the detecting result is reachable only when all the detected objects contained in the detected group are reachable.

or: Specifies the relationship between detected objects as logic OR, which means that the detecting result is reachable if one of the detected objects contained in the detected group is reachable.

Description

Use the option command to specify the way to generate detecting results.

Use the undo option command to restore the default way to generate detecting results.

By default, the relationship between the detected objects is and.

When a detecting operation is being carried out, the device detects each detected object contained in the detected group in turn by their sequence number.

l          If you specify the and keyword, the device returns reachable as the detecting result only if all the detected objects in the detected group are detected reachable.

l          If you specify the or keyword, the device returns reachable as the detecting result only if one of the detected objects in the detected group is detected reachable and the remaining detected objects will not be detected any more.

Examples

# Specify the relationship between the three detected objects in detected group 10 as or.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10] detect-list 1 ip address 202.13.1.55 nexthop 1.2.3.4

[device-detect-group-10] detect-list 2 ip address 202.13.1.56 nexthop 1.2.3.4

[device-detect-group-10] detect-list 3 ip address 202.13.1.57 nexthop 1.2.3.4

[device-detect-group-10] option or

After the configuration, if one of the three detected objects is reachable, the system will consider detected group 10 reachable.

retry

Syntax

retry retry-times

undo retry

View

Detected group view

Parameters

retry-times: Maximum retry times during a detect operation. This argument ranges from 0 to 10 and defaults to 2.

Description

Use the retry command to set the maximum retry times during a detect operation. Use the undo retry command to restore the default times.

By default, the maximum retry times during a detect operation is two.

Examples

# Specify the maximum number of retires to 3 for detected group 10.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10] retry 3

standby detect-group

Syntax

standby detect-group group-number

undo standby detect-group

View

VLAN interface view

Parameters

group-number: Detected group number ranging from 1 to 50.

Description

Use the standby detect-group command to configure the interface backup function by using the auto detect function.

Use the undo standby detect-group command to disable the interface backup function.

After you configure the standby detect-group command, whether the backup interface is enabled depends on the auto detecting results:

l          The primary interface keeps in use when the detected group is reachable.

l          The backup interface is enabled when the detected group is unreachable.

l          The backup interface is disabled and the primary interface is re-enabled when the link between the primary interface and the destination resumes, that is, the detected group is reachable again.

Examples

# Specify to enable VLAN-interface 2 (the backup interface) when the detected group 10 is unreachable.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] interface vlan-interface 2

[device-Vlan-interface2] standby detect-group 10

After the configuration, if detected group 10 is reachable, the backup interface VLAN-interface 2 will be in the disabled state, and if detected group 10 is unreachable, VLAN-interface 2 will be enabled.

timer loop

Syntax

timer loop interval

undo timer loop

View

Detected group view

Parameters

seconds: Detecting interval. This argument ranges form 1 to 86,400 (in seconds) and defaults to 15.

Description

Use the timer loop command to set the detecting interval, that is, the frequency to perform auto detect operations.

Use the undo timer loop command to restore the default.

By default, auto detect operations are performed on all detected groups every 15 seconds.

Examples

# Set the detecting interval to 60 seconds for detected group 10.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10] timer loop 60

timer wait

Syntax

timer wait seconds

undo timer wait

View

Detected group view

Parameters

seconds: Timeout waiting for an ICMP reply. This argument ranges from 1 to 30 (in seconds) and defaults to 2.

Description

Use the timer wait command to set a timeout waiting for an ICMP reply.

Use the undo timer wait command to restore the default.

By default, timeout waiting for an ICMP reply in an auto detect operation is 2 seconds.

Examples

# Set a timeout of 3 seconds waiting for an ICMP reply in detected group 10.

<device> system-view

System View: return to User View with Ctrl+Z.

[device] detect-group 10

[device-detect-group-10] timer wait 3