Technology: FIREWALLS
Area: Traffic restrictions
Vendor: CISCO
Software: CISCO ADAPTIVE SECURITY APPLIANCE (ASA) , ASA-OS, 8.3+
Platform: CISCO ASA 5500, 5500-X
BGP runs between routers in different autonomous systems (or the same and then it is called iBGP). BGP routing is supported in Active/Standby and Active/Active HA configurations. Only the Active unit listens on TCP port for BGP connections from peers.
To configure BGP configuration use command below:
BGP routing configuration example (external BGP – eBGP):
----- ASA1 ------
router bgp 100
address-family ipv4 unicast
neighbor 203.0.113.2 remote-as 200
network 192.168.10.0 mask 255.255.255.0
network 172.16.20.0 mask 255.255.255.0
network 10.106.44.0 mask 255.255.255.0
----- ASA2 ------
router bgp 200
address-family ipv4 unicast
neighbor 203.0.113.1 remote-as 100
network 10.10.10.0 mask 255.255.255.0
network 10.180.10.0 mask 255.255.255.0
network 172.16.30.0 mask 255.255.255.0
Read about the BGP Communities
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