Dear Matthew,

Thanks a lot. Rae

Router1

netstat -lnt

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 0.0.0.0:179 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:902 0.0.0.0:* LISTEN

tcp6 0 0 :::22 :::* LISTEN

tcp6 0 0 ::1:631 :::* LISTEN

tcp6 0 0 ::1:25 :::* LISTEN

tcp6 0 0 :::902 :::* LISTEN

Router2

netstat -lnt

Active Internet connections (only servers)

Proto Recv-Q Send-Q Local Address Foreign Address State

tcp 0 0 0.0.0.0:111 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:179 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:631 0.0.0.0:* LISTEN

tcp 0 0 127.0.0.1:25 0.0.0.0:* LISTEN

tcp 0 0 0.0.0.0:902 0.0.0.0:* LISTEN

tcp6 0 0 :::111 :::* LISTEN

tcp6 0 0 :::22 :::* LISTEN

tcp6 0 0 ::1:631 :::* LISTEN

tcp6 0 0 ::1:25 :::* LISTEN

tcp6 0 0 :::902 :::* LISTEN

From: Matthew Walster <matthew@walster.org>
Sent: Wednesday, June 6, 2018 2:26 PM
To: Rae Ho (ITSC) <raeho@cuhk.edu.hk>
Cc: Ondrej Zajicek <santiago@crfreenet.org>; Bird Users <bird-users@network.cz>
Subject: Re: BIRD router/route server functions

On Tue, 5 Jun 2018 at 21:04, Rae Ho (ITSC) <raeho@cuhk.edu.hk> wrote:

Seems the problem is domain name?

No, I think either you've got a firewall (iptables etc) running and blocking tcp/179, or you haven't put "listen bgp" into your configuration, so bird is not listening on tcp/179.

What is the output of "netstat -lnt"?