All Looks OK but Route is not imported into Routing table
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DQi
Dec 4, 2018, 1:14:49 PM12/4/18
to exabgp-users
Hey,
Setting up exabgp between two neighbors. All look ok. but the interface route from peer is not imported into routing table. Do I need to allow for non-directly connected next-hop? If so, what's the config knob? Or I am missing something else. Really appreciate the help!
Dave
------------------------------------------------------
Neighbor 1 (lvs21)
daveqi@lvs21:~$ sudo cat /etc/exabgp/bgp.conf
# healthcheck for lb
process nlb-service {
run python -m exabgp healthcheck -s --interval 10 --increase 0 --cmd "test -f /etc/lb/lb-ready -a ! -f /etc/lb/lb-disable";
encoder text;
}
template {
neighbor lb {
router-id 10.142.0.8;
local-address 10.142.0.8;
local-as 65000;
peer-as 65000;
hold-time 6;
family {
ipv4 unicast;
}
api nlb-service {
processes [ nlb-service ];
}
}
}
# First router
neighbor 10.142.0.4 {
inherit lb;
}
daveqi@lvs21:~$ sudo cat /usr/local/etc/exabgp/exabgp.env
[exabgp.api]
ack = true
chunk = 1
cli = true
compact = false
encoder = text
pipename = 'exabgp'
respawn = false
terminate = false
[exabgp.bgp]
openwait = 60
[exabgp.cache]
attributes = true
nexthops = true
[exabgp.daemon]
daemonize = true
drop = true
pid = ''
umask = '0137'
user = 'root'
[exabgp.log]
all = false
configuration = true
daemon = true
destination = '/var/log/exabgp.log'
enable = true
level = INFO
message = false
network = true
packets = false
parser = false
processes = true
reactor = true
rib = false
routes = false
short = false
timers = false
[exabgp.pdb]
enable = false
[exabgp.profile]
enable = false
file = ''
[exabgp.reactor]
speed = 1.0
daveqi@lvs21:~$ sudo exabgp -d -e /usr/local/etc/exabgp/exabgp.env /etc/exabgp/bgp.conf
21:51:59 | 1734 | welcome | Thank you for using ExaBGP
21:51:59 | 1734 | version | 4.0.10-a8462350
21:51:59 | 1734 | interpreter | 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516]
21:51:59 | 1734 | os | Linux lvs21 4.18.0-0.bpo.1-cloud-amd64 #1 SMP Debian 4.18.6-1~bpo9+1 (2018-09-13) x86_64
21:51:59 | 1734 | installation | /usr/local
21:51:59 | 1734 | cli control | named pipes for the cli are:
21:51:59 | 1734 | cli control | to send commands /usr/local/run/exabgp.in
21:51:59 | 1734 | cli control | to read responses /usr/local/run/exabgp.out
daveqi@lvs21:~$ sudo uname -a
Linux lvs21 4.18.0-0.bpo.1-cloud-amd64 #1 SMP Debian 4.18.6-1~bpo9+1 (2018-09-13) x86_64 GNU/Linux
daveqi@lvs21:~$ sudo ifconfig lo:0 160.43.100.100 netmask 255.255.255.255 broadcast 160.43.100.100
daveqi@lvs21:~$ sudo ifconfig -a
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1460
inet 10.142.0.8 netmask 255.255.255.255 broadcast 10.142.0.8
inet6 fe80::4001:aff:fe8e:8 prefixlen 64 scopeid 0x20<link>
ether 42:01:0a:8e:00:08 txqueuelen 1000 (Ethernet)
RX packets 1995 bytes 11251413 (10.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1583 bytes 168402 (164.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 530 bytes 26500 (25.8 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 530 bytes 26500 (25.8 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo:0: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 160.43.100.100 netmask 255.255.255.255
loop txqueuelen 1000 (Local Loopback)
daveqi@lvs21:~$ sudo exabgpcli show neighbor configuration
neighbor 10.142.0.4 {
description "";
router-id 10.142.0.8;
host-name lvs21;
domain-name lvs21;
local-address 10.142.0.8;
local-as 65000;
peer-as 65000;
hold-time 6;
manual-eor false;
passive false;
group-updates true;
auto-flush true;
adj-rib-in true;
adj-rib-out true;
md5-base64 auto;
md5-ip "10.142.0.8";
capability {
asn4 enable;
route-refresh disable;
graceful-restart disable;
add-path disable;
multi-session disable;
operational disable;
aigp disable;
}
family {
ipv4 unicast;
}
add-path {
}
api {
processes [ nlb-service ];
}
}
daveqi@lvs21:~$ sudo exabgpcli show neighbor extensive
Neighbor 10.142.0.4
Session Local
local 10.142.0.8
state ESTABLISHED
up for 0:01:03
Setup Local Remote
AS 65000 65000
ID 10.142.0.8 n/a
hold-time 6 6
Capability Local Remote
multi-session: disabled disabled
route-refresh: disabled disabled
asn4: enabled enabled
operational: disabled disabled
extended-message: enabled enabled
add-path: disabled disabled
graceful-restart: disabled disabled
Families Local Remote Add-Path
ipv4 unicast: enabled enabled disabled
Message Statistic Sent Received
notification: 0 0
update: 1 1
refresh: 0 0
total: 35 35
open: 1 1
keepalive: 33 33
----------------------------------------------------------------------------------
Neighbor2 (server1)
daveqi@server1:~$ sudo cat /etc/exabgp/bgp.conf
neighbor 10.142.0.8 {
description "test peer";
router-id 10.142.0.4;
local-address 10.142.0.4;
local-as 65000;
peer-as 65000;
hold-time 6;
group-updates;
family {
ipv4 unicast;
}
}
daveqi@server1:~$ sudo cat /usr/local/etc/exabgp/exabgp.env
[exabgp.api]
ack = true
chunk = 1
cli = true
compact = false
encoder = text
pipename = 'exabgp'
respawn = false
terminate = false
[exabgp.bgp]
openwait = 60
[exabgp.cache]
attributes = true
nexthops = true
[exabgp.daemon]
daemonize = true
drop = true
#pid = '/var/run/exabgp.pid'
pid = ''
umask = '0137'
user = 'root'
[exabgp.log]
all = false
configuration = true
daemon = true
destination = '/var/log/exabgp.log'
enable = true
level = INFO
message = false
network = true
packets = false
parser = false
processes = true
reactor = true
rib = false
routes = false
short = false
timers = false
[exabgp.pdb]
enable = false
[exabgp.profile]
enable = false
file = ''
[exabgp.reactor]
speed = 1.0
[exabgp.tcp]
acl = false
bind = '10.142.0.4'
delay = 0
once = false
port = 179
daveqi@server1:~$ sudo exabgp -d -e /usr/local/etc/exabgp/exabgp.env /etc/exabgp/bgp.conf
22:01:33 | 2060 | welcome | Thank you for using ExaBGP
22:01:33 | 2060 | version | 4.0.10-a8462350
22:01:33 | 2060 | interpreter | 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516]
22:01:33 | 2060 | os | Linux server1 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64
22:01:33 | 2060 | installation | /usr/local
22:01:33 | 2060 | cli control | named pipes for the cli are:
22:01:33 | 2060 | cli control | to send commands /usr/local/run/exabgp.in
22:01:33 | 2060 | cli control | to read responses /usr/local/run/exabgp.out
daveqi@server1:~$ sudo uname -a
Linux server1 4.9.0-8-amd64 #1 SMP Debian 4.9.130-2 (2018-10-27) x86_64 GNU/Linux
daveqi@server1:~$ sudo ifconfig -a
eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1460
inet 10.142.0.4 netmask 255.255.255.255 broadcast 10.142.0.4
inet6 fe80::4001:aff:fe8e:4 prefixlen 64 scopeid 0x20<link>
ether 42:01:0a:8e:00:04 txqueuelen 1000 (Ethernet)
RX packets 2064 bytes 11275030 (10.7 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 1660 bytes 205214 (200.4 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
daveqi@server1:~$ sudo exabgpcli show neighbor configuration
neighbor 10.142.0.8 {
description "test peer";
router-id 10.142.0.4;
host-name server1;
domain-name server1;
local-address 10.142.0.4;
local-as 65000;
peer-as 65000;
hold-time 6;
manual-eor false;
passive false;
group-updates true;
auto-flush true;
adj-rib-in true;
adj-rib-out true;
md5-base64 auto;
md5-ip "10.142.0.4";
capability {
asn4 enable;
route-refresh disable;
graceful-restart disable;
add-path disable;
multi-session disable;
operational disable;
aigp disable;
}
family {
ipv4 unicast;
}
add-path {
}
}
daveqi@server1:~$ sudo exabgpcli show neighbor extensive
Neighbor 10.142.0.8
Session Local
local 10.142.0.4
state ESTABLISHED
up for 0:07:13
Setup Local Remote
AS 65000 65000
ID 10.142.0.4 n/a
hold-time 6 6
Capability Local Remote
multi-session: disabled disabled
route-refresh: disabled disabled
asn4: enabled enabled
operational: disabled disabled
extended-message: enabled enabled
add-path: disabled disabled
graceful-restart: disabled disabled
Families Local Remote Add-Path
ipv4 unicast: enabled enabled disabled
Message Statistic Sent Received
notification: 0 0
update: 1 1
refresh: 0 0
total: 219 219
open: 1 1
keepalive: 217 217
# check the log to see bgp update from neighbor
daveqi@server1:~$ sudo view /var/log/exabgp.log
.......
Mon, 03 Dec 2018 22:14:13 2060 incoming-2 << message of type UPDATE
Mon, 03 Dec 2018 22:14:13 2060 parser parsing UPDATE ( 37) 0000 001C 4001 0100 4002 0040 0304 0A8E 0008 8004 0400 0000 6440 0504 0000 0064 20A0 2B64 64
Mon, 03 Dec 2018 22:14:13 2060 parser withdrawn NLRI none
Mon, 03 Dec 2018 22:14:13 2060 parser attribute origin flag 0x40 type 0x01 len 0x01 payload 00
Mon, 03 Dec 2018 22:14:13 2060 parser attribute as-path flag 0x40 type 0x02 len 0x00
Mon, 03 Dec 2018 22:14:13 2060 parser attribute next-hop flag 0x40 type 0x03 len 0x04 payload 0A8E 0008
Mon, 03 Dec 2018 22:14:13 2060 parser attribute med flag 0x80 type 0x04 len 0x04 payload 0000 0064
Mon, 03 Dec 2018 22:14:13 2060 parser attribute local-preference flag 0x40 type 0x05 len 0x04 payload 0000 0064
Mon, 03 Dec 2018 22:14:13 2060 parser NLRI ipv4 unicast without path-information payload 20A0 2B64 64
Mon, 03 Dec 2018 22:14:13 2060 parser announced NLRI 160.43.100.100/32 next-hop 10.142.0.8
Mon, 03 Dec 2018 22:14:13 2060 peer-1 << UPDATE #2
Mon, 03 Dec 2018 22:14:13 2060 peer-1 UPDATE #2 nlri ( 5) 160.43.100.100/32 next-hop 10.142.0.8
# but it is not in routing table
daveqi@server1:~$ sudo ip route show
default via 10.142.0.1 dev eth0
10.142.0.1 dev eth0 scope link
daveqi@lvs21:~$ sudo exabgp -d -e /usr/local/etc/exabgp/exabgp.env /etc/exabgp/bgp.conf 21:51:59 | 1734 | welcome | Thank you for using ExaBGP 21:51:59 | 1734 | version | 4.0.10-a8462350 21:51:59 | 1734 | interpreter | 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516] 21:51:59 | 1734 | os | Linux lvs21 4.18.0-0.bpo.1-cloud-amd64 #1 SMP Debian 4.18.6-1~bpo9+1 (2018-09-13) x86_64 21:51:59 | 1734 | installation | /usr/local 21:51:59 | 1734 | cli control | named pipes for the cli are: 21:51:59 | 1734 | cli control | to send commands /usr/local/run/exabgp.in 21:51:59 | 1734 | cli control | to read responses /usr/local/run/exabgp.out
daveqi@lvs21:~$ sudo exabgp -d -e /usr/local/etc/exabgp/exabgp.env /etc/exabgp/bgp.conf 21:51:59 | 1734 | welcome | Thank you for using ExaBGP 21:51:59 | 1734 | version | 4.0.10-a8462350 21:51:59 | 1734 | interpreter | 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516] 21:51:59 | 1734 | os | Linux lvs21 4.18.0-0.bpo.1-cloud-amd64 #1 SMP Debian 4.18.6-1~bpo9+1 (2018-09-13) x86_64 21:51:59 | 1734 | installation | /usr/local 21:51:59 | 1734 | cli control | named pipes for the cli are: 21:51:59 | 1734 | cli control | to send commands /usr/local/run/exabgp.in 21:51:59 | 1734 | cli control | to read responses /usr/local/run/exabgp.out
daveqi@lvs21:~$ sudo exabgp -d -e /usr/local/etc/exabgp/exabgp.env /etc/exabgp/bgp.conf 21:51:59 | 1734 | welcome | Thank you for using ExaBGP 21:51:59 | 1734 | version | 4.0.10-a8462350 21:51:59 | 1734 | interpreter | 2.7.13 (default, Sep 26 2018, 18:42:22) [GCC 6.3.0 20170516] 21:51:59 | 1734 | os | Linux lvs21 4.18.0-0.bpo.1-cloud-amd64 #1 SMP Debian 4.18.6-1~bpo9+1 (2018-09-13) x86_64 21:51:59 | 1734 | installation | /usr/local 21:51:59 | 1734 | cli control | named pipes for the cli are: 21:51:59 | 1734 | cli control | to send commands /usr/local/run/exabgp.in 21:51:59 | 1734 | cli control | to read responses /usr/local/run/exabgp.out
Thomas Mangin
Dec 6, 2018, 6:16:28 PM12/6/18
to exabgp...@googlegroups.com
Hello,
Yes this is normal. ExaBGP is not a router. If you think of Apache and CGI scripts. It is the same but for BGP.
It is used either to send route (BGP SDN) or monitor what is being done by the routers.
Sincerely,
Thomas
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DQi
Dec 7, 2018, 2:10:39 PM12/7/18
to exabgp-users
Hey Thomas,
Much thanks for the explanation!
Dave
Much thanks for the explanation!
Dave
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