Route Aggregation Example for IPV4
The following figure shows the topology for
this example.
Route Aggregation Example
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Configure router A.
Configure router A.
create vlan "v3"
create vlan "v1"
create vlan "v2"
configure vlan v3 add ports 1
configure vlan v1 add ports 23
configure vlan v2 add ports 16
configure v1 ipaddress 10.1.1.1/24
configure v2 ipaddress 10.1.2.1/24
configure v3 ipaddress 10.1.4.1/24
enable ipforwarding
configure bgp AS-number 100
configure bgp routerid 1.1.1.1
create bgp neighbor 10.1.1.2 remote-AS-number 64500
create bgp neighbor 10.1.2.2 remote-AS-number 64505
create bgp neighbor 10.1.4.2 remote-AS-number 64510
enable bgp neighbor all
enable bgp
enable bgp aggregation
configure bgp add aggregate-address 172.16.0.0/16 as-set summary-only
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Configure router B.
Configure router B.
create vlan "v1"
create vlan "net"
configure vlan v1 add ports 5:33
configure vlan net add ports 5:20
configure v1 ipaddress 10.1.1.2/24
configure net ipaddress 172.16.1.1/24
enable ipforwarding
configure bgp AS-number 64500
configure bgp routerid 1.1.1.2
configure bgp add network address-family 172.16.1.0/24
create bgp neighbor 10.1.1.1 remote-AS-number 100
enable bgp neighbor 10.1.1.1
enable bgp
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Configure router C.
Configure router C.
create vlan "v1"
create vlan "net"
configure vlan net add ports 2:15
configure vlan v1 add ports 2:16
configure v1 ipaddress 10.1.2.2/24
configure net ipaddress 172.16.2.1/24
enable ipforwarding
configure bgp AS-number 64505
configure bgp routerid 2.1.1.2
configure bgp add network 172.16.2.0/24
create bgp neighbor 10.1.2.1 remote-AS-number 100
enable bgp neighbor 10.1.2.1
enable bgp
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Configure router D.
Configure router D.
create vlan "v1"
configure vlan v1 add ports 24
configure v1 ipaddress 10.1.4.2/24
enable ipforwarding
configure bgp AS-number 64510
configure bgp routerid 5.1.1.2
create bgp neighbor 10.1.4.1 remote-AS-number 100
enable bgp neighbor 10.1.4.1
enable bgp
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The following command displays the aggregated route at
Router D:
* Switch.22 # show bgp routes all
Routes:
Destination Peer Next-Hop LPref Weight MED AS-Path
----------------------------------------------------------------------------------------
*>i 172.16.0.0/16 10.1.4.1 10.1.4.1 100 1 0 100 300
Flags: (*) Preferred BGP route, (>) Active, (d) Suppressed, (h) History
(s) Stale, (m) Multipath, (u) Unfeasible
Origin: (?) Incomplete, (e) EGP, (i) IGP
BGP Route Statistics
Total Rxed Routes : 1
Feasible Routes : 1
Active Routes : 1
Rejected Routes : 0
Unfeasible Routes : 0
Route Statistics on Session Type
Routes from Int Peer: 0
Routes from Ext Peer: 1
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