Advanced Configuration and Management Guide

 

Table 10.11: BGP4 Route-Attribute Entries Information (Continued)

 

 

 

This Field...

 

Displays...

 

 

 

Next Hop

 

The IP address of the next hop router for routes that have this set of

 

 

attributes.

 

 

 

Metric

 

The cost of the routes that have this set of attributes.

 

 

 

Origin

 

The source of the route information. The origin can be one of the

 

 

following:

 

 

• EGP – The routes with this set of attributes came to BGP through

 

 

 

EGP.

 

 

• IGP – The routes with this set of attributes came to BGP through

 

 

 

IGP.

 

 

•

INCOMPLETE – The routes came from an origin other than one

 

 

 

of the above. For example, they may have been redistributed

 

 

 

from OSPF or RIP.

 

 

When BGP4 compares multiple routes to a destination to select the

 

 

best route, IGP is preferred over EGP and both are preferred over

 

 

INCOMPLETE.

 

 

 

Originator

 

The originator of the route in a route reflector environment.

 

 

 

Cluster List

 

The route-reflector clusters through which this set of attributes has

 

 

passed.

 

 

 

Aggregator

 

Aggregator information:

 

 

•

AS Number shows the AS in which the network information in the

 

 

 

attribute set was aggregated. This value applies only to

 

 

 

aggregated routes and is otherwise 0.

 

 

• Router-IDshows the router that originated this aggregator.

 

 

 

Atomic

 

Whether the network information in this set of attributes has been

 

 

aggregated and this aggregation has resulted in information loss.

 

 

• TRUE – Indicates information loss has occurred

 

 

• FALSE – Indicates no information loss has occurred

 

 

Note: Information loss under these circumstances is a normal part of

 

 

BGP4 and does not indicate an error.

 

 

 

Local Pref

 

The degree of preference for routes that use this set of attributes

 

 

relative to other routes in the local AS.

 

 

 

Communities

 

The communities that routes with this set of attributes are in.

 

 

 

AS Path

 

The ASs through which routes with this set of attributes have passed.

 

 

The local AS is shown in parentheses.

 

 

 

 

USING THE WEB MANAGEMENT INTERFACE

1.Log on to the device using a valid user name and password for read-only or read-write access. The System configuration panel is displayed.

2.Click on the plus sign next to Monitor in the tree view to expand the list of monitoring options.

3.Click on the plus sign next to BGP in the tree view to expand the list of BGP option links.

4.Click on the Attributes link to display the BGP Attributes Entries panel.

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