BIRD router/route server functions

[Rae Ho (ITSC)]

You should also upgrade BIRD, version 1.4.5 is too old.
Could provide me the upgrade procedure?

Rae

From: Rae Ho (ITSC)
Sent: Wednesday, June 6, 2018 12:04 PM
To: Rae Ho (ITSC) <raeho at cuhk.edu.hk>; Ondrej Zajicek <santiago at crfreenet.org>
Cc: bird-users at network.cz
Subject: RE: BIRD router/route server functions


tcpdump -i ens160 'tcp port 179 and host 192.168.199.13'

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on ens160, link-type EN10MB (Ethernet), capture size 65535 bytes

11:52:14.026373 IP bird1.cuhk.edu.hk.54372 > 192.168.199.13.bgp: Flags [S], seq 256428900, win 29200, options [mss 1460,sackOK,TS val 2230497637 ecr 0,nop,wscale 7], length 0

11:52:14.401556 IP 192.168.199.13.51631 > bird1.cuhk.edu.hk.bgp: Flags [S], seq 3989668659, win 29200, options [mss 1460,sackOK,TS val 2230734469 ecr 0,nop,wscale 7], length 0

11:52:18.031631 IP bird1.cuhk.edu.hk.58460 > 192.168.199.13.bgp: Flags [S], seq 3350460062, win 29200, options [mss 1460,sackOK,TS val 2230501642 ecr 0,nop,wscale 7], length 0

11:52:19.405962 IP 192.168.199.13.54429 > bird1.cuhk.edu.hk.bgp: Flags [S], seq 573528156, win 29200, options [mss 1460,sackOK,TS val 2230739473 ecr 0,nop,wscale 7], length 0



tcpdump -i ens160 'tcp port 179 and host 192.168.199.12'

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on ens160, link-type EN10MB (Ethernet), capture size 65535 bytes

11:52:03.595665 IP 192.168.199.12.53662 > bird2.cuhk.edu.hk.bgp: Flags [S], seq 708312977, win 29200, options [mss 1460,sackOK,TS val 2230487710 ecr 0,nop,wscale 7], length 0

11:52:03.884791 IP bird2.cuhk.edu.hk.39590 > 192.168.199.12.bgp: Flags [S], seq 2978908357, win 29200, options [mss 1460,sackOK,TS val 2230724456 ecr 0,nop,wscale 7], length 0

11:52:07.600739 IP 192.168.199.12.54354 > bird2.cuhk.edu.hk.bgp: Flags [S], seq 562475138, win 29200, options [mss 1460,sackOK,TS val 2230491715 ecr 0,nop,wscale 7], length 0

11:52:07.889979 IP bird2.cuhk.edu.hk.59598 > 192.168.199.12.bgp: Flags [S], seq 2985453764, win 29200, options [mss 1460,sackOK,TS val 2230728462 ecr 0,nop,wscale 7], length 0



Seems the problem is domain name?



-----Original Message-----
From: Bird-users <bird-users-bounces at network.cz<mailto:bird-users-bounces at network.cz>> On Behalf Of Rae Ho (ITSC)
Sent: Wednesday, June 6, 2018 11:13 AM
To: Ondrej Zajicek <santiago at crfreenet.org<mailto:santiago at crfreenet.org>>
Cc: bird-users at network.cz<mailto:bird-users at network.cz>
Subject: RE: BIRD router/route server functions



Last error:       Socket: No route to host <--



-----Original Message-----

From: Ondrej Zajicek <santiago at crfreenet.org<mailto:santiago at crfreenet.org>>

Sent: Tuesday, June 5, 2018 8:57 PM

To: Rae Ho (ITSC) <raeho at cuhk.edu.hk<mailto:raeho at cuhk.edu.hk>>

Cc: Quan Zhou <quanzhou822 at gmail.com<mailto:quanzhou822 at gmail.com>>; bird-users at network.cz<mailto:bird-users at network.cz>

Subject: Re: BIRD router/route server functions



On Tue, Jun 05, 2018 at 09:29:08AM +0000, Rae Ho (ITSC) wrote:

> Dear Quan Zhou, Thanks. Rae



Hi



Your setup looks OK. You could use tcpdump on ens160 to see if there are BGP connection attempts in both directions. Also, is there anything interesting in BIRD logs?



You should also upgrade BIRD, version 1.4.5 is too old.



--

Elen sila lumenn' omentielvo



Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org<mailto:santiago at crfreenet.org>) OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3, wwwkeys.pgp.net) "To err is human -- to blame it on a computer is even more so."


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