troubleshooting Question

bgp ibgp/ebgp & as_path attribute - query

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mikey250 asked on
RoutersNetworkingNetworking ProtocolsNetwork ManagementNetwork Architecture
8 Comments2 Solutions550 ViewsLast Modified:
hi ive configured a small test network representing both 'ibgp & ebgp with router 1 connected to both router 2 & 3.

1st task:

note: router 1 & 2 have configured both 'bgp & ospf representing igp'

- router 1 is connected via a serial cable to router 3
- router 1 is also connected via a fastethernet cable to router 2
- router 1 also has a single loopback

- router 2 is connected to router 1
- router 2 also has a single loopback

- router 3 is also configured with just 'bgp & not ospf' as it is external
- router 3 has also a fastethernet connection to a lan

ive configured on router 1 & router 3 for example:

router 1

router bgp 200
network 172.16.1.0 mask 255.255.255.0

router 3

router bgp 100
network 192.168.1.32 mask 255.255.255.224

2nd task:

ive configured a small network for using the 'as_path attribute' - but instead of configuring something simular to above 'mask' command ive done the following:

router 1

router bgp 300
no synchronization
neighbor 192.168.1.5 remote-as 100
neighbor 172.16.1.18 remote-as 65000
network 202.2.2.0

router 2

router bgp 100
no synchronization
neighbor 192.168.1.6 remote-as 300
network 201.1.1.0

router 3

router bgp 65000
no synchronization
neighbor 172.24.1.17 remote-as 300
network 203.3.3.0

question.  i assume it is something to do with how ibgp & ebgp distinguish itself with 'bgp' as why step 2 does not use the 'mask' command ?
ASKER CERTIFIED SOLUTION
pergr

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