Hi there,
I am trying to build up the following topology:
H1 <----> OVS Switch1 < --- > Quagga BGP router 1 < ----- > Quagga BGP
Router 2 < --- > OVS Switch 2 < --- > H2.
Basically I am trying to keep H1 and OVS1, BGP1 as a same subnet, same
thing for H2, OVS2 and BGP2. My goal is to make H1 and H2 be able to ping
each other. In order to do that, I think I need BGP redistribution in order
to exchange routing knowledge between BGP and Linux routing table.
The problem is: after I did all above, I still not be able to ping from H1
to H2. Currently, I can ping from H1 to BGP1 ( even the interface that
facing BGP 2 ), similarly I can ping from H2 to BGP2. I can also between
BGP routers, the BGP peer established the neighbor relationship and they
can advertise the network without a problem.
More details:
1 ) Nodes Info
H1: IP : 10.0.0.3
BGP Router 1: 10.0.0.2 and 100.0.0.1
BGP Router 2: 20.0.0.2 and 100.0.0.2
H2 : 20.0.0.3
2 ) Quagga Router bgpd.conf Info
BGP router 1
! path logfile for bgpd daemon
log file /var/log/quagga/bgpd.log
! password for telnet authentication
password bgpuser
router bgp 100
bgp router-id 10.0.0.2
neighbor 100.0.0.2 remote-as 200
neighbor 100.0.0.2 next-hop-self
network 10.0.0.2
redistribute connected
BGP Router 2
! path logfile for bgpd daemon
log file /var/log/quagga/bgpd.log
! password for telnet authentication
password bgpuser
router bgp 200
bgp router-id 20.0.0.2
neighbor 100.0.0.1 remote-as 100
neighbor 100.0.0.1 next-hop-self
network 20.0.0.2/24
redistribute connected
3 ) Routing Table Info
mininext> h1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
0.0.0.0 10.0.0.2 0.0.0.0 UG 0 0 0
h1-eth0
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0
h1-eth0
BGP1 Routing Table:
mininext> as1 route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use
Iface
2.2.2.0 100.0.0.2 255.255.255.0 UG 1 0 0
as1-eth1
10.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0
as1-eth0
20.0.0.0 100.0.0.2 255.255.255.0 UG 0 0 0
as1-eth1
100.0.0.0 0.0.0.0 255.255.255.0 U 0 0 0
as1-eth1
mininext> as1 vtysh -c "show ip bgp"
BGP table version is 0, local router ID is 10.0.0.2
Status codes: s suppressed, d damped, h history, * valid, > best, i -
internal,
r RIB-failure, S Stale, R Removed
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 1.1.1.0/24 0.0.0.0 1 32768 ?
*> 2.2.2.0/24 100.0.0.2 1 0 200 ?
*> 10.0.0.0 0.0.0.0 0 32768 i
*> 10.0.0.0/24 0.0.0.0 1 32768 ?
*> 20.0.0.0/24 100.0.0.2 0 0 200 i
* 100.0.0.0/24 100.0.0.2 1 0 200 ?
*> 0.0.0.0 1 32768 ?
On AS1 node(BGP 1 I mentioned above), I can see the BGP does exchange its
neighbor information to the routing table as I use BGP redistribution. So I
currently have no clue where is incorrect, I think I might need some help
from here. If somebody can give some hint I will really appreciated, thanks
in advance!
Qing
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