Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manuel d'utilisateur télécharger pdf (Page 93)

Configuring BGP Peers

308628-15.0 Rev 00

4-11

Specifying a Holddown Time

The holddown time is the amount of time that either peer waits for a keepalive or

update message before declaring the connection down.

A BGP speaker that initiates a connection inserts a holddown time value into the

open message. The peer responds with an open message that also contains a

holddown time value. If the BGP speakers establish a session, they use the lesser

value (which must be greater than 2 seconds). There are two exceptions to this

rule:

• If one peer sends a nonzero holddown time, the peers use the nonzero

holddown time on the session.

• If both peers send zero holddown times, the peers observe no holddown time

on the session.

By default, BGP inserts a value of 90 seconds into the open message.

You can use the BCC or Site Manager to reset the holddown time value or to

disable the holddown function by setting this value to 0.

Using the BCC

To specify a holddown time, go to a BGP peer prompt (for example,

box; ip; /jointfilesconvert/97454/bgp;

peer/2.2.2.2/2.2.2.3

) and enter:

holddown

seconds

is the number of seconds (from 3 through 2,147,483,647) that BGP waits

for a keepalive or update message before declaring the connection down.

For example, the following command sets the holddown time to 60 seconds for

the peer session established between interfaces 2.2.2.2 and 2.2.2.5:

peer/2.2.2.2/2.2.2.5#

holddown 60

peer/2.2.2.2/2.2.2.5#

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Avaya Configuring IP Exterior Gateway Protocols (BGP and EGP) Manuel d'utilisateur Page 93