Default Gateway For The Srx 210 Services Gateway - Juniper SRX 210 Services Hardware Manual

SRX 210 Services Gateway Hardware Guide
Table 23: Services Gateway Basic Connectivity Settings Details (continued)
Elements Descriptions
Default A default gateway is a static route that is used to direct
Gateway packets addressed to networks not explicitly listed in
the routing table. If a packet arrives at the services
gateway with an address for which the device does not
have routing information, the services gateway sends
the packet to the default gateway.
Backup
NOTE: This feature is currently not supported in this
Device release..
You can specify a backup device to take over when the
routing protocol process of the services gateway is not
running:
When the services gateway is starting.
When its routing protocol process has failed.
Packets arriving at a services gateway in this
situation are routed to the backup device. When
the routing protocol process starts up again, the
address of the backup device is removed from the
routing and forwarding tables of the services
gateway.
Loopback The loopback address is the IP address of the services
Address gateway. The loopback address ensures that the device
provides an IP address to management applications.
Because it must always be available to hosts attempting
to route packets to the device, the loopback address
resides on an interface that is always active, known as
the loopback interface (
Related Topics

Default Gateway for the SRX 210 Services Gateway

A default gateway is a static route that is used to direct packets addressed to networks
not explicitly listed in the routing table. If a packet arrives at the SRX 210 services
gateway with an address for which the device does not have routing information,
the services gateway sends the packet to the default gateway. The default gateway
entry is always present in the routing and forwarding tables.
Related Topics
82
Default Gateway for the SRX 210 Services Gateway
lo0.0 ).
SRX 210 Services Gateway Basic Connectivity Overview on page 78
Time Zone and System Time for the SRX 210 Services Gateway on page 80
Default Gateway for the SRX 210 Services Gateway on page 82
SRX 210 Services Gateway Basic Connectivity Overview on page 78
Settings
The default gateway entry is always present in the
routing and forwarding tables.
NOTE: The backup device must be located on the
same subnet as the primary device.
To configure a backup device, you must use the CLI
or J-Web configuration editor. You cannot configure
a backup device with J-Web Quick Configuration.
Setting a loopback address ensures that the device
can receive packets addressed to the loopback
address as long as the device is reachable though
any entry (ingress) interface. In addition,
applications such as NTP, RADIUS, and TACACS+
can use the loopback address as the source address
for outgoing packets.
If you use the J-Web Quick Configuration Set Up
page, you can either set a loopback address of your
choice or have the loopback address automatically
set to 127.0.0.1 when you click Apply or OK to
commit the configuration.