Configuring Forwarding Table (NSM Procedure)
A forwarding table contains the routes actually used
to forward packets through the device to their next-hop destination.
This feature enables you to configure forwarding table in NSM.
To configure forwarding table in NSM:
- In the navigation tree, select Device Manager
> Devices .
- In the Devices list, double click the
device to select it.
- Click the Configuration tab.
- In the configuration tree, expand Routing Options.
- Select Forwarding Table.
- Add or modify the parameters as specified in Table 1.
- Click one:
- OK—To save the changes.
- Cancel—To cancel the modifications.
- Apply—To apply the routing option settings.
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Note:
After you make changes to a device configuration, you
must push that updated device configuration to the physical security
device for those changes to take effect. You can update multiple devices
at one time. See the Updating Devices section
in the Network and Security Manager Administration Guide for more information.
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Table 1: Forwarding Table Fields
Option
|
Function
|
Your Action
|
Comment
|
Specifies the comment for the forwarding table.
|
Enter a comment.
|
None
|
Specifies that no next- hop parameter is to be added
to the forwarding table.
|
Select the option button.
|
indirect-next-hop
|
Specifies that the forwarding table supports indirectly
connected next hops.
|
Select the option button to enable indirect-next-
hop.
|
no-indirect-next-hop
|
Specifies that the forwarding table does not support
indirectly connected next hops.
|
Select the option button to enable no-indirect-next-
hop.
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Unicast Reverse Path
|
Enables you to check path validity to protect the network
from IP spoofing. A unicast reverse-path-forwarding (RPF) check performs
a routing table lookup on an IP packet’s source address and
checks the incoming interface. The device determines whether the packet
is arriving from a path that the sender would use to reach the destination.
If the packet is from a valid path, the device forwards the packet
to the destination address. If it is not from a valid path, the device
discards the packet.
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Select the path from the drop-down list.
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Export
|
Enables you to apply one or more policies to routes being
exported from the routing table into the forwarding table.
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- Expand the Forwarding Table tree and
select Export.
- Enter the export policies.
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Published: 2009-08-23
