Services

This section contains the following topics:

Configuring DHCP with Quick Configuration

This section contains the following topics:

Configuring DHCP Service with Quick Configuration

The DHCP Quick Configuration pages allow you to set up the DHCP service on the router. From the DHCP Service Quick Configuration page, click each of the tabs to configure global settings, DHCP pools for subnets, and static bindings for DHCP clients.

To configure the DHCP service with Quick Configuration:

  1. In the J-Web user interface, select Configuration>Quick Configuration>DHCP Service.
  2. Enter information into the DHCP Service Quick Configuration pages as described in Table 121.
  3. From the DHCP Service Quick Configuration page, click one of the following buttons:
    • To apply the configuration and stay on the current Quick Configuration page, click Apply.
    • To apply the configuration and return to the DHCP Service Quick Configuration main page, click OK.
    • To cancel your entries and return to the DHCP Quick Configuration main page, click Cancel.

Table 121: DHCP Service Quick Configuration Summary

Field

Function

Your Action

Configuring Global Settings 
Server Information

Server Identifier

Specifies the IP address of the DHCP server reported to a client.

Type the IP address of the Services Router. If you do not specify a server identifier, the primary address of the interface on which the DHCP exchange occurs is used.

Domain Name

Specifies the domain name that the clients must use to resolve hostnames.

Type the domain name.

Next Server

Specifies the IP address of the next DHCP server that the clients need to contact.

Type the IP address of the next DHCP server.

Propagate Interface

Specifies the name of the interface on the router through which the resolved DHCP queries are propagated to the DHCP pool.

Type the name of the interface.

Domain Search

Specifies the order—from top to bottom—in which clients must append domain names when resolving hostnames using DNS.

Do one of the following:

  • To add a domain name, type the name next to the Add button, and click Add.
  • To delete a domain name, select the name in the Domain Search box, and click Delete.

Name Servers

Defines a list of DNS servers the client can use, in order of preference—from top to bottom.

Do one of the following:

  • To add a DNS server, type an IP address next to the Add button, and click Add.
  • To remove a DNS server, select the IP address in the Name Servers box, and click Delete.

Gateway Routers

Defines a list of routers on the subnet that are configured as DHCP relay agents, in order of preference—from top to bottom.

Do one of the following:

  • To add a relay agent, type an IP address next to the Add button, and click Add.
  • To remove a relay agent, select the IP address in the Gateway Routers box, and click Delete.

WINS Servers

Specifies the name of the SNMP trap group being configured.

Do one of the following:

  • To add a NetBIOS name server, type an IP address next to the Add button, and click Add.
  • To remove a NetBIOS name server, select the IP address in the WINS Servers box, and click Delete.
Lease Time

Maximum Lease Time (seconds)

Specifies the maximum length of time a client can hold a lease. (Dynamic BOOTP lease lengths can exceed this maximum time.)

Type a number between 60 and 1,209,600 (seconds).

Default Lease Time (seconds)

Specifies the length of time a client can hold a lease, for clients that do not request a specific lease length.

Type a number between 60 and 2,419, 200 (seconds).

Boot Options

Boot File

Specifies the path and filename of the initial boot file to be used by the client.

Type the path and a file name.

Boot Server

Specifies the TFTP server that provides the initial boot file to the client.

Type the IP address or hostname of the TFTP server.

Option Table

Code/Type/Value

Defines a list of option codes, types, and values, in order of preference—from top to bottom. It is mandatory to define all the options.

Do the following:

  • Option Code—Type a number.
  • Option Type—Select a type from the list corresponding to the code.
  • Option Value—Type a valid option value based on the type.
Configuring DHCP Pools

DHCP Pools

Enables you to define address pools for DHCP clients.

To configure a new DHCP pool, click Add under DHCP Pools.

Address Pool Subnet (required)

Specifies the pool subnet on which DHCP is configured.

Type an IP address prefix.

Address Range Low (required)

Specifies the lowest address in the IP address pool range.

Type an IP address that is part of the subnet specified in Address Pool Subnet.

Address Range High (required)

Specifies the highest address in the IP address pool range.

Type an IP address that is part of the subnet specified in Address Pool Subnet. This address must be greater than the address specified in Address Range Low.

Exclude Addresses

Specifies addresses to exclude from the IP address pool.

Do one of the following:

  • To add an excluded address, type the address next to the Add button, and click Add.
  • To delete an excluded address, select the address in the Exclude Addresses box, and click Delete.
Configuring DHCP Static Bindings

DHCP Static Bindings

Enables you to assign DHCP clients to static IP addresses.

To configure a new static binding, click Add under DHCP Static Bindings.

DHCP MAC Address (required)

Specifies the MAC address of the client to be permanently assigned a static IP address.

Type the hexadecimal MAC address of the client.

Host Name

Specifies the client hostname associated with its IP address used by the DHCP messages exchanged between the server and the client. The name must be unique to the client within the subnet on which the client resides.

Type a client hostname.

Fixed IP Address (required)

Defines a list of IP addresses permanently assigned to the client. A static binding must have at least one fixed address assigned to it, but multiple addresses are also allowed.

Do one of the following:

  • To add an IP address, type the address next to the Add button, and click Add.
  • To remove an IP address, select the address in the Fixed IP Addresses box, and click Delete.

Client Identifier

Specifies the name of the client used by the DHCP server to index its database of address bindings. The client identifier can be an ASCII or hexadecimal string.

Do either of the following:

  • Select the client identifier type from the list. If you select Hexadecimal, you must type the client identifier using numbers 0 through 9, and letters A through F.
  • Type the client identifier.

Configuring the Router as a DHCP Client with Quick Configuration

The DHCP Client Quick Configuration page allows you to configure a server to act as a DHCP client and receive the TCP/IP settings and the IP address for any physical interface.

To configure the DHCP client with Quick Configuration:

  1. In the J-Web user interface, select Configuration > Quick Configuration > DHCP Client.
  2. Under DHCP Client, click Add and enter information into the DHCP Client Quick Configuration page as described in Table 122
  3. From the DHCP Client Quick Configuration page, click one of the following buttons:
    • To apply the configuration and stay on the Quick Configuration page for DHCP Client, click Apply.
    • To apply the configuration and return to the DHCP Client Quick Configuration main page, click OK.
    • To cancel your entries and return to the DHCP Client Quick Configuration main page, click Cancel.

Table 122: DHCP Client Quick Configuration Summary

Field

Function

Your Action

DHCP Client 

DHCP Client

Enables you to configure the router to operate as a DHCP client.

From the DHCP Quick Configuration page, click Add under DHCP Client.

Interface (required)

Specifies the interface on which to configure the DHCP client.

Type the name of the interface.

Client Identifier

Specifies the name of the client used by the DHCP server to index its database of address bindings.

The client identifier can be an ASCII or hexadecimal string.

Do either of the following:

  • Select the client identifier type from the list. If you select Hexadecimal, you must type the client identifier using numbers 0 through 9, and letters A through F.
  • Type the client identifier.

Lease Time (seconds)

Specifies the time to negotiate and exchange DHCP messages.

Type a number between 60 and 2,147,483,647 (seconds).

Retransmission Attempt

Specifies the number of attempts the router is allowed to retransmit a DHCP packet fallback.

Type a number between 0 and 6.

The default is 4.

Retransmission Interval (seconds)

Specifies the time interval allowed between successive retransmission attempts.

Type a number between 4 and 64.

The default is 4.

DHCP Server Address

Specifies the preferred DHCP server the DHCP clients contact with DHCP queries.

Type the IPv4 address of the DHCP server.

Vendor Class ID

Specifies the vendor class identity number for the DHCP client.

Type the vendor class ID.

Update Server

Specifies whether the propagation of TCP/IP settings is enabled on the specified interface (if it is acting as a DHCP client) to the DHCP server configured on the router.

To enable the propagation of TCP/IP settings to the DHCP server configured on the router, select Update Server check box.

Configuring BOOTP or DHCP Relay with Quick Configuration

The Bootp/DHCP Relay Quick Configuration page allows you to configure the router as a relay agent to forward the incoming BOOTP or DHCP requests from BOOTP or DHCP clients to a BOOTP server.

To configure the router as a DHCP relay agent with Quick Configuration:

  1. In the J-Web user interface, select Configuration > Quick Configuration > Bootp/DHCP Relay.
  2. Enter information into the Bootp/DHCP Relay Quick Configuration page as described in Table 123
  3. From the Bootp/DHCP Relay Quick Configuration page, click one of the following buttons:
    • To apply the configuration and stay on the Quick Configuration page for Bootp/DHCP Relay, click Apply.
    • To apply the configuration and return to the previous page, click OK.
    • To cancel your entries and return to the previous page, click Cancel.

Table 123: Bootp/DHCP Relay Quick Configuration Summary

Field

Function

Your Action

DHCP Relay Agent

Specifies if the DHCP relay agent is enabled to relay BOOTP or DHCP messages to a BOOTP server.

To enable the relay agent, select DHCP Relay Agent check box.

VPN Encryption

Specifies if VPN encryption is enabled to allow client requests to pass through a VPN tunnel.

To enable VPN encryption, select VPN Encryption check box.

Client Response TTL

Specifies the IP time-to-live value, in seconds, to set in responses to clients.

Type a number between 1 and 225.

Maximum Hop Count

Specifies the maximum number of hops allowed per packet.

Type a number between 4 and 16.

Minimum Wait Time

Specifies the minimum number of seconds before requests are forwarded to the BOOTP server.

Type a number between 0 and 30,000.

Description of Server

Specifies the description for the BOOTP server.

Type the description in the Description of the Server text box.

Servers/Routing Instance

Defines a list of IP addresses of the servers and routing instances, in order of preference—from top to bottom.

  1. Do the following:
    • Type the IP address of the server.
    • Select a routing instance. A routing instance is optional.
  2. Do one of the following:
    • To add a server, type an IP address next to the Add button, and click Add.
    • To remove a server, select the IP address in the Servers/Routing Instance list, and click Delete.

Interfaces

Defines a list of the incoming BOOTP or DHCP request forwarding interfaces, in order of preference—from top to bottom.

Do one of the following:

  • To add a DNS server, type an IP address next to the Add button, and click Add.
  • To remove a DNS server, select the IP address in the Interfaces list, and click Delete.

Configuring SNMP with Quick Configuration

J-Web Quick Configuration allows you to define system identification information, create SNMP communities, create SNMP trap groups, and configure health monitor options. Quick Configuration Page for SNMP shows the Quick Configuration page for SNMP.

To configure SNMP features with Quick Configuration:

  1. In the J-Web user interface, select Configure>Services>SNMP.
  2. Enter information into the Quick Configuration page for SNMP, as described in Table 124.
  3. From the SNMP Quick Configuration page, click one of the following buttons:
    • To apply the configuration and stay on the Quick Configuration page for SNMP, click Apply.
    • To apply the configuration and return to the Quick Configuration SNMP page, click OK.
    • To cancel your entries and return to the Quick Configuration for SNMP page, click Cancel.

Table 124: SNMP Quick Configuration Summary

Field

Function

Your Action

Identification 

Contact Information

Free-form text string that specifies an administrative contact for the system.

Type any contact information for the administrator of the system (such as name and phone number).

System Description

Free-form text string that specifies a description for the system.

Type any system information that describes the system (J4350 with 4 PIMs, for example).

Local Engine ID

Provides an administratively unique identifier of an SNMPv3 engine for system identification.

The local engine ID contains a prefix and a suffix. The prefix is formatted according to specifications defined in RFC 3411. The suffix is defined by the local engine ID. Generally, the local engine ID suffix is the MAC address of Ethernet management port 0.

Type the MAC address of Ethernet management port 0.

System Location

Free-form text string that specifies the location of the system.

Type any location information for the system (lab name or rack name, for example).

System Name Override

Free-form text string that overrides the system hostname.

Type the name of the system.

Communities

Click Add.

Community Name

Specifies the name of the SNMP community.

Type the name of the community being added.

Authorization

Specifies the type of authorization (either read-only or read-write) for the SNMP community being configured.

Select the desired authorization (either read-only or read-write) from the list.

Traps

Click Add.

Trap Group Name

Specifies the name of the SNMP trap group being configured.

Type the name of the SNMP trap group being configured.

Categories

Specifies which trap categories are added to the trap group being configured.

  • To generate traps for authentication failures, select Authentication.
  • To generate traps for chassis and environment notifications, select Chassis.
  • To generate traps for configuration changes, select Configuration.
  • To generate traps for link-related notifications (up-down transitions), select Link.
  • To generate traps for remote operation notifications, select Remote operations.
  • To generate traps for remote network monitoring (RMON), select RMON alarm.
  • To generate traps for routing protocol notifications, select Routing.
  • To generate traps on system warm and cold starts, select Startup.
  • To generate traps on Virtual Router Redundancy Protocol (VRRP) events (such as new-master or authentication failures), select VRRP events.

Targets

One or more hostnames or IP addresses that specify the systems to receive SNMP traps generated by the trap group being configured.

  1. Enter the hostname or IP address, in dotted decimal notation, of the target system to receive the SNMP traps.
  2. Click Add.
Health Monitoring

Enable Health Monitoring

Enables the SNMP health monitor on the device. The health monitor periodically (the time you specify in the interval field) checks the following key indicators of device health:

  • Percentage of file storage used
  • Percentage of Routing Engine CPU used
  • Percentage of Routing Engine memory used
  • Percentage of memory used for each system process
  • Percentage of CPU used by the forwarding process
  • Percentage of memory used for temporary storage by the forwarding process

Select the check box to enable the health monitor and configure options. If you do not select the check box, the health monitor is disabled.

Note: If you select only the Enable Health Monitoring check box and do not specify the options, then SNMP health monitoring is enabled with the default values for the options.

Interval

Determines the sampling frequency, in seconds, over which the key health indicators are sampled and compared with the rising and falling thresholds.

For example, if you configure the interval as 100 seconds, the values are checked every 100 seconds.

Enter an interval time, in seconds, between 1 and 2147483647.

The default value is 300 seconds (5 minutes).

Rising Threshold

Value at which you want SNMP to generate an event (trap and system log message) when the value of a sampled indicator is increasing.

For example, if the rising threshold is 90 (the default), SNMP generates an event when the value of any key indicator reaches or exceeds 90 percent.

Enter a value between 0 and 100.

The default value is 90.

Falling Threshold

Value at which you want SNMP to generate an event (trap and system log message) when the value of a sampled indicator is decreasing.

For example, if the falling threshold is 80 (the default), SNMP generates an event when the value of any key indicator falls back to 80 percent or less.

Enter a value between 0 and 100.

The default value is 80.

Note: The falling threshold value must be less than the rising threshold value.