DGS-3630 Series Layer 3 Stackable Managed Switch Web UI Reference Guide 
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BGP Route Preference Settings 
This window is used to display and configure the BGP route preference settings. 
To view the following window, click L3 Features > BGP > BGP Route Preference Settings, as shown below: 
 
Figure 6-176 BGP Route Preference Settings Window 
 
The fields that can be configured are described below: 
Parameter  Description 
Address Family 
Select the address family that will be used here. Options to choose from are: 
•  IPv4 Unicast - Specifies to use the IPv4 unicast address family in this 
configuration. 
•  IPv4 VRF - Specifies to use a VRF instance in this configuration. Enter the 
name of the VRF instance in the space provided or click the Please Select 
button to select a pre-configured VRF instance that will be used here. This 
name can be up to 12 characters long. 
•  IPv6 Unicast - Specifies to use the IPv6 unicast address family in this 
configuration. 
Distance EGBP 
Enter the distance eBGP route preference value here. The range is from 1 to 255 
for an IPv4 address family and 1 to 254 for IPv6 address family. 
Distance IBGP 
Enter the distance iBGP route preference value here. The range is from 1 to 255 
for an IPv4 address family and 1 to 254 for IPv6 address family. 
Click the Apply button to accept the changes made. 
 
After clicking the Please Select button, the following page will appear. 
 
Figure 6-177 BGP Route Preference Settings (Please Select) Window 
 
Select the VRF entry and click the OK button to use the selected VRF entry. 
Enter a page number and click the Go button to navigate to a specific page when multiple pages exist. 
 
BGP Dampening Settings 
This window is used to display and configure the BGP dampening settings. The purpose of this feature is to eliminate 
the advertising of unstable routes and thus to avoid unstable networks caused by flapping routes.