[Rdo-list] Problem with floating IP
pauline phaure
phaurep at gmail.com
Fri Apr 17 09:52:43 UTC 2015
hey Miguel, thank you for your response, plz found below the output of the
commands:
*ip netns exec qrouter-f7194985-eb13-41bf-8158-f0e78fc932c4 ip a*
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
12: qr-207805ae-39: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UNKNOWN
link/ether fa:16:3e:1c:62:a8 brd ff:ff:ff:ff:ff:ff
inet 10.0.0.1/24 brd 10.0.0.255 scope global qr-207805ae-39
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fe1c:62a8/64 scope link
valid_lft forever preferred_lft forever
13: qg-52b4d686-58: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UNKNOWN
link/ether fa:16:3e:34:d5:6e brd ff:ff:ff:ff:ff:ff
inet 192.168.2.70/24 brd 192.168.2.255 scope global qg-52b4d686-58
valid_lft forever preferred_lft forever
inet *192.168.2.72/32 <http://192.168.2.72/32>* brd 192.168.2.72 scope
global *qg-52b4d686-58*
valid_lft forever preferred_lft forever
inet6 fe80::f816:3eff:fe34:d56e/64 scope link
valid_lft forever preferred_lft forever
*ip netns exec qrouter-f7194985-eb13-41bf-8158-f0e78fc932c4 tcpdump -e -n
-v -v -v -i qg-52b4d686-58*
equest who-has 192.168.2.1 tell 192.168.2.72, length 28
11:49:19.705378 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:20.707292 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:22.706910 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:23.707412 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:24.709292 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:26.710264 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:27.711297 fa:16:3e:34:d5:6e > Broadcast, ethertype ARP (0x0806),
length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.1 tell
192.168.2.72, length 28
11:49:28.002005 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.42
(Broadcast) tell 192.168.2.1, length 46
11:49:28.002064 fa:16:3e:34:d5:6e > 00:23:48:9e:85:7c, ethertype IPv4
(0x0800), length 98: (tos 0x0, ttl 63, id 58298, offset 0, flags [DF],
proto ICMP (1), length 84)
192.168.2.72 > 192.168.2.1: ICMP echo request, id 19201, seq 494,
length 64
11:49:28.002079 fa:16:3e:34:d5:6e > 00:23:48:9e:85:7c, ethertype IPv4
(0x0800), length 98: (tos 0x0, ttl 63, id 58299, offset 0, flags [DF],
proto ICMP (1), length 84)
192.168.2.72 > 192.168.2.1: ICMP echo request, id 19201, seq 495,
length 64
11:49:28.040439 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.5
(Broadcast) tell 192.168.2.1, length 46
11:49:28.079105 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.20
(Broadcast) tell 192.168.2.1, length 46
11:49:28.115671 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.34
(Broadcast) tell 192.168.2.1, length 46
11:49:28.179014 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.22
(Broadcast) tell 192.168.2.1, length 46
11:49:28.223391 00:23:48:9e:85:7c > Broadcast, ethertype ARP (0x0806),
length 60: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.2.240
(Broadcast) tell 192.168.2.1, length 46
*tcpdump -e -n -v -v -v -i eth0 *
11:41:44.953118 00:0c:29:56:d9:09 > 74:46:a0:9e:ff:a5, ethertype IPv4
(0x0800), length 166: (tos 0x10, ttl 64, id 10881, offset 0, flags [DF],
proto TCP (6), length 152)
192.168.2.19.ssh > 192.168.2.99.53021: Flags [P.], cksum 0x8651
(incorrect -> 0x9f53), seq 2550993953:2550994065, ack 2916435463, win 146,
length 112
11:41:44.953804 74:46:a0:9e:ff:a5 > 00:0c:29:56:d9:09, ethertype IPv4
(0x0800), length 60: (tos 0x0, ttl 128, id 31471, offset 0, flags [DF],
proto TCP (6), length 40)
192.168.2.99.53021 > 192.168.2.19.ssh: Flags [.], cksum 0x7b65
(correct), seq 1, ack 112, win 16121, length 0
11:41:45.017729 00:0c:29:91:4c:ea > 00:0c:29:56:d9:09, ethertype IPv4
(0x0800), length 99: (tos 0x0, ttl 64, id 17044, offset 0, flags [DF],
proto TCP (6), length 85)
192.168.2.22.45167 > 192.168.2.19.amqp: Flags [P.], cksum 0x7339
(correct), seq 2968653045:2968653078, ack 1461763310, win 123, options
[nop,nop,TS val 222978 ecr 218783], length 33
11:41:45.018242 00:0c:29:56:d9:09 > 00:0c:29:91:4c:ea, ethertype IPv4
(0x0800), length 78: (tos 0x0, ttl 64, id 47485, offset 0, flags [DF],
proto TCP (6), length 64)
192.168.2.19.amqp > 192.168.2.22.45167: Flags [P.], cksum 0x85ac
(incorrect -> 0x4c5d), seq 1:13, ack 33, win 330, options [nop,nop,TS val
223746 ecr 222978], length 12
11:41:45.018453 00:0c:29:91:4c:ea > 00:0c:29:56:d9:09, ethertype IPv4
(0x0800), length 66: (tos 0x0, ttl 64, id 17045, offset 0, flags [DF],
proto TCP (6), length 52)
192.168.2.22.45167 > 192.168.2.19.amqp: Flags [.], cksum 0x8701
(correct), seq 33, ack 13, win 123, options [nop,nop,TS val 222979 ecr
223746], length 0
2015-04-17 10:42 GMT+02:00 Miguel Angel Ajo Pelayo <mangelajo at redhat.com>:
> To troubleshoot this I’d recommend you
>
> 1) doing a tcpdump in the controller node, on the external interface
> attached to br-ex,
> and find what’s going on,
>
> tcpdump -e -n -v -v -v -i ethX
>
> note: as per your schema you may use an “external flat network”
> (no segmentation) from your network/controller node, so the packets going
> out from the router
> should not be tagged in your tcpdump.
>
> If you set the external network as vlan tagged, you may have to change it
> into flat. (such operation
> may require removing the floating ips from instances, removing legs from
> router (External, and internal),
> and then removing the router, then the external network/subnet).
>
>
> In a separate terminal, it may help to ..
> 2) look for the router netns:
>
> # ip netns
> qrouter-8f2f7e69-02c3-4b75-9b25-e23b64757935
>
> note : this is the “virtual router”, it lives in a network namespace which
> is another isolated
> instance of the linux networking stack., you will find the interfaces and
> IPs attached with
> the following command:
>
> # ip netns exec qrouter-8f2f7e69-02c3-4b75-9b25-e23b64757935 ip a
>
> (here look for the external leg of the router, it will have the external
> router IP and the floating ip attached)
> it should look like qg-xxxxxxxx-xx
>
>
> # ip netns exec qrouter-8f2f7e69-02c3-4b75-9b25-e23b64757935 tcpdump -e -n
> -v -v -v -i qg-xxxxxxx-xx
>
>
> Please tell us how is it going .
>
>
>
> > On 17/4/2015, at 9:48, pauline phaure <phaurep at gmail.com> wrote:
> >
> > Hello everyone,
> > I have some troubles making the floating IP work. When I associate a
> floating IP to my instance, the instance can reach the neutron-router and
> ping but cannot ping the external gateway. any ideas where to look?
> >
> >
> > <image.png>
> > _______________________________________________
> > Rdo-list mailing list
> > Rdo-list at redhat.com
> > https://www.redhat.com/mailman/listinfo/rdo-list
> >
> > To unsubscribe: rdo-list-unsubscribe at redhat.com
>
> Miguel Angel Ajo
>
>
>
>
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