User Guide

38.....Avocent® Universal Management Gateway Appliance Installer/User Guide
6. To edit an existing network, check the box next to the network under the Modify an
OSPFNetwork heading. When finished, click Apply.
7. To delete a network, check the box next to the network, then click Delete.
BGP
BGPis one of the key protocols used to achieve internet connection redundancy. BGPappliances
use TCPprotocol on port 179 to communicate with each other. BGPsends only incremental
updates containing the routing entries that have changed since the last update.
BGPpeers are established by manual configuration between appliances to create a TCPsession
on port 179. Every 30 seconds, a BGPspeaker will send keep-alive messages to maintain the
connection. Each BGPappliance maintains a separate TCP session with other BGPappliances to
which it is connected.
An Autonomous System (AS)is a group of ITnetworks run by one or more network operators with
a single, clearly defined routing policy. When exchanging routing information, each ASis identified
by a unique number. The 16-bit number range is from 0 to 65535. From 64512 to 65535 is reserved
for private use. Exterior routing protocols such as BGPare used to exchange routing information
between Autonomous Systems. An ASwill normally use some interior gateway protocol to
exchange routing information on its internal networks. The network value is in CIDRformat of an
IPaddress/netmask, for example:10.12.1.0/24. The configured network will be announced to all its
neighbors.
To configure BGP:
1. From the sidebar, click Network Settings - BGP.
2. Check the box to enable BGP.
NOTE: When BGPis enabled or disabled, an alert will be sent to the alert manager.
3. Enter the ASnumber and appliance ID, then click Apply. The appliance IDshould be an
IPaddress, but it can be any arbitrary 32-bit number.
4. To add a network, enter the address for the network then click Add.
5. To edit an existing network, check the box next to the network under the Modify a
BGPnetwork heading. When finished, click Apply.
6. To delete a network, check the box next to the network, then click Delete.
7. To add a neighbor (peer), enter its IP address and remote-ASnumber then click Add.
NOTE: The default ASnumber is 64512, which is a private ASnumber. You will need to modify it when
using BGPto make sure it's unique in the network.