Hi Fujimoto,
This is the flow table in one of the switches;
root@sw1:/# ovs-ofctl dump-flows sw1
NXST_FLOW reply (xid=0x4):
cookie=0x0, duration=91.782s, table=0, n_packets=4, n_bytes=296,
idle_age=6, priority=120,tcp,in_port=2,tp_dst=179 actions=output:1
cookie=0x0, duration=91.781s, table=0, n_packets=12, n_bytes=888,
idle_age=14, priority=120,tcp,in_port=1,tp_dst=179 actions=output:2
cookie=0x0, duration=91.783s, table=0, n_packets=4, n_bytes=168,
idle_age=24, priority=70,arp,in_port=2 actions=output:1
cookie=0x0, duration=91.782s, table=0, n_packets=4, n_bytes=168,
idle_age=24, priority=70,arp,in_port=1 actions=output:2
Apparently, in this case the BGP packets can traverse through the
network but the controllers cannot detect it. You can see the packets
are matched in the flow table.
I did further changes on the TCP rules and I removed the destination
port check from the rule and after this elimination surprisingly the
peering established.
Probably, this is due to tcp communications among controllers which are
not performed through port 179 to establish a BGP peering. Is it right?
Best regards,
Habib
On 9/29/2017 3:54 AM, Fujimoto Satoshi wrote:
Hi, Habib
If you installed rules for ARP and BGP correctly, the peering should
be established.
Could you let me see the whole of flow table in your switches?
Thanks,
Fujimoto
On 2017年09月28日 00:39, Habib Mostafaei wrote:
Hi,
I have created two controllers as two BGP speakers like ryu
documentation (i.e., by using application.py and bgp_sample_conf.py
files).
I have two switches which are connected to controllers and the
switches are connected to each other as well.
I would like to create a BGP peering between two controllers. To
create the BGP session between controllers I have the rules to handle
the ARP traffic and after solving ARP problem, I have another two
rules on each switch in order to allow tcp packets (i.e.,
dst_port=179 for BGP packets) to enter the controller and exit from
it. The rules are also matched but the peering does not established.
I was wondering how can I solve this problem.
Thank you.
Habib
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