Dell PowerConnect 6248 User's Guide - Page 547

OSPF Route Redistribution Configuration, IP Access Control Lists

Page 547 highlights

• Metric - Sets the metric value for redistributed routes. This field displays a metric value if the source was preconfigured. The valid values are 0 to 16777214. • Metric Type - Select the OSPF metric type of redistributed routes from the drop-down menu. • Tag - Sets the tag field in routes redistributed. This field displays a tag value if the source was preconfigured, otherwise 0 is displayed. The valid values are 0 to 4294967295. • Subnets - Select whether the subnetted routes should be redistributed or not from the drop-down menu. • Distribute List - Selects the Access List that filters the routes to be redistributed by the destination protocol. Only permitted routes are redistributed. If this command refers to a non-existent access list, all routes are permitted. The drop-down menu lists the ACLs configured from the Switching→ Network Security→Access Control Lists→IP Access Control Lists pages. When used for route filtering, the only fields in an access list that get used are: - Source IP Address and netmask - Destination IP Address and netmask - Action (permit or deny) All other fields (source and destination port, precedence, tos, and so on.) are ignored. The source IP address is compared to the destination IP address of the route. The source IP netmask in the access list rule is treated as a wildcard mask, indicating which bits in the source IP address must match the destination address of the route. NOTE: A 1 in the mask indicates a Don't Care in the corresponding address bit. When an access list rule includes a destination IP address and netmask (an extended access list), the destination IP address is compared to the network mask of the route destination. The destination netmask in the access list serves as a wildcard mask, indicating which bits in the route's destination mask are significant for the filtering operation. • Redistribute - Enables or disables the redistribution for the selected source protocol. This field has to be enabled in order to be able to configure any of the route redistribution attributes. Creating an OSPF Route Redistribution Source When no redistributions are configured, the system displays only Create in the Configured Source field and possible sources in the Available Source fields. When you select an Available Source, enter configuration data, and click Apply Changes, the item displays in the Configure Source drop-down list and is removed from the Available Source drop-down list. 1. Open the OSPF Route Redistribution Configuration page. 2. Specify Create in the Configured Source field. 3. Select Static, Connected, or RIP from the Available Source field. 4. Click Apply Changes when finished. The route redistribution data is configured, and the device is updated. Configuring Routing 547

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Configuring Routing
547
Metric
— Sets the metric value for redistributed routes. This field displays a metric value if the source
was preconfigured. The valid values are 0 to 16777214.
Metric Type
— Select the OSPF metric type of redistributed routes from the drop-down menu.
Tag
— Sets the tag field in routes redistributed. This field displays a tag value if the source was
preconfigured, otherwise 0 is displayed. The valid values are 0 to 4294967295.
Subnets
— Select whether the subnetted routes should be redistributed or not from the drop-down
menu.
Distribute List
— Selects the Access List that filters the routes to be redistributed by the destination
protocol. Only permitted routes are redistributed. If this command refers to a non-existent access list,
all routes are permitted. The drop-down menu lists the ACLs configured from the
Switching
Network Security
Access Control Lists
IP Access Control Lists
pages. When used for route
filtering, the only fields in an access list that get used are:
Source IP Address and netmask
Destination IP Address and netmask
Action (permit or deny)
All other fields (source and destination port, precedence, tos, and so on.) are ignored.
The source IP address is compared to the destination IP address of the route. The source IP netmask in
the access list rule is treated as a wildcard mask, indicating which bits in the source IP address must
match the destination address of the route.
NOTE:
A 1 in the mask indicates a Don’t Care in the corresponding address bit.
When an access list rule includes a destination IP address and netmask (an extended access list), the
destination IP address is compared to the network mask of the route destination. The destination
netmask in the access list serves as a wildcard mask, indicating which bits in the route’s destination
mask are significant for the filtering operation.
Redistribute
— Enables or disables the redistribution for the selected source protocol. This field has to
be enabled in order to be able to configure any of the route redistribution attributes.
Creating an OSPF Route Redistribution Source
When no redistributions are configured, the system displays only Create in the Configured Source field
and possible sources in the Available Source fields. When you select an Available Source, enter
configuration data, and click
Apply Changes
, the item displays in the Configure Source drop-down list
and is removed from the Available Source drop-down list.
1.
Open the
OSPF Route Redistribution Configuration
page.
2.
Specify
Create
in the Configured Source field.
3.
Select Static, Connected, or RIP from the Available Source field.
4.
Click
Apply Changes
when finished.
The route redistribution data is configured, and the device is updated.