Routing or ISP Problem

José Sanabria

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May 17, 2017, 12:32:53 AM5/17/17

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Hi people!

I need your help to solve the next problem.

I have an conection ADSL, one fiber and one more by coaxial cable.

The first two connection I have run with pppoe.. and run fine and the he coaxial cable work fine. Both works without problems.

But, in the ADSL conection I have 2 Publics IP, and on the Fiber conection have other 2 Public IP. And on the coaxial conection have 1 Public IP.

My configuration:

OS: Centos 7 x64

My IP's:

Fiber - IP1: 201.217.200.177

Fiber - IP2: 201.217.200.178

ADSL - IP1: 201.217.40.113

ADSL - IP2: 201.217.40.114

Coxial - IP1: 192.135.126.214 (Connected to the server with DMZ - IP: 192.168.2.1)

[root@orion ~]# ifconfig

enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet 192.168.2.2 netmask 255.255.255.252 broadcast 192.168.2.3

inet6 fe80::1aa6:f7ff:fe00:8bde prefixlen 64 scopeid 0x20<link>

ether 18:a6:f7:00:8b:de txqueuelen 1000 (Ethernet)

RX packets 2841698 bytes 2604496089 (2.4 GiB)

RX errors 0 dropped 16 overruns 0 frame 0

TX packets 2166431 bytes 374843488 (357.4 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet 192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255

inet6 fe80::9ade:d0ff:fe02:4e21 prefixlen 64 scopeid 0x20<link>

ether 98:de:d0:02:4e:21 txqueuelen 1000 (Ethernet)

RX packets 7290829 bytes 1519331662 (1.4 GiB)

RX errors 0 dropped 2891 overruns 0 frame 0

TX packets 8379288 bytes 6885545072 (6.4 GiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet6 fe80::32b5:c2ff:fe02:cc97 prefixlen 64 scopeid 0x20<link>

ether 30:b5:c2:02:cc:97 txqueuelen 1000 (Ethernet)

RX packets 2314477 bytes 1773978865 (1.6 GiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1580784 bytes 458121935 (436.8 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500

inet6 fe80::32b5:c2ff:fe02:dc1d prefixlen 64 scopeid 0x20<link>

ether 30:b5:c2:02:dc:1d txqueuelen 1000 (Ethernet)

RX packets 2833733 bytes 2516008101 (2.3 GiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 2212207 bytes 579000151 (552.1 MiB)

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 279076 bytes 38305358 (36.5 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 279076 bytes 38305358 (36.5 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo:1: flags=73<UP,LOOPBACK,RUNNING> mtu 65536

inet 201.217.200.177 netmask 255.255.255.252

loop txqueuelen 1 (Local Loopback)

lo:2: flags=73<UP,LOOPBACK,RUNNING> mtu 65536

inet 201.217.200.178 netmask 255.255.255.252

loop txqueuelen 1 (Local Loopback)

lo:3: flags=73<UP,LOOPBACK,RUNNING> mtu 65536

inet 201.217.40.113 netmask 255.255.255.252

loop txqueuelen 1 (Local Loopback)

lo:4: flags=73<UP,LOOPBACK,RUNNING> mtu 65536

inet 201.217.40.114 netmask 255.255.255.252

loop txqueuelen 1 (Local Loopback)

ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1492

inet 177.250.211.84 netmask 255.255.255.255 destination 201.217.1.7

ppp txqueuelen 3 (Point-to-Point Protocol)

RX packets 2217508 bytes 1719366392 (1.6 GiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 1483802 bytes 419658294 (400.2 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ppp1: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1492

inet 190.23.233.68 netmask 255.255.255.255 destination 201.217.1.8

ppp txqueuelen 3 (Point-to-Point Protocol)

RX packets 2638848 bytes 2445890749 (2.2 GiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 2115164 bytes 526637726 (502.2 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

root@orion ~]# ip route ls

default

nexthop via 192.168.2.1 dev enp2s0 weight 15

nexthop via 201.217.1.8 dev ppp1 weight 3

nexthop via 201.217.1.7 dev ppp0 weight 2

192.135.126.214 via 192.168.2.1 dev enp2s0

192.168.0.0/24 dev enp3s5 proto kernel scope link src 192.168.0.1

192.168.2.0/30 dev enp2s0 proto kernel scope link src 192.168.2.2

201.217.1.7 dev ppp0 proto kernel scope link src 177.250.211.84

201.217.1.8 dev ppp1 proto kernel scope link src 190.23.233.68

201.217.31.10 via 201.217.1.7 dev ppp0 (One destination over Fiber)

201.217.200.176/30 dev lo proto kernel scope link src 201.217.200.176

201.217.40.113/30 dev lo proto kernel scope link src 201.217.40.113

[root@orion ~]#

The problem:

I can't ping all Public IPs.

Any idea?

Thanks!

Jatin Parmar

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May 17, 2017, 5:55:08 AM5/17/17

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Dear José,

Install the traceroute pkg and check with that command where the request is getting stuck.

root@server:~$ traceroute 201.217.1.8

also check with source ping in which you are facing the issue.

root@server:~$ ping 201.217.1.8 -c 192.168.0.1 (For example only)

root@server:~$ ping 201.217.1.8 -c 192.168.2.2 (For example only)

JATIN PARMAR

M.Tech BITS Pilani

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José Sanabria

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May 18, 2017, 12:22:20 AM5/18/17

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Dear Jatin!

Thanks for your help.. but, that's not my problem: I have internet conection to navigate..

I paste my network map, for explain with graphics. Please note: I not have a ping or conection from external networks to any of the publics ip.

That's my problem.

Thanks in advance!

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José Sanabria

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May 18, 2017, 12:22:20 AM5/18/17

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My network

__________***

/

+----------------+ |

| Provider 01 | |

+-------eth1+--------| PUBLIC IP.1:13 |-------|

| lo:1 | PUBLIC IP.2:14 | |

| lo:2 | TYPE=ADSL | |

| +----------------+ |

| |

| +-----------------+ |

+--------------------+ +--------------+ | | Provider 02 | |

| LAN | | LINUX ROUTER |-----+------eth2+---------| PUBLIC IP.1:177 |------| INTERNET

| IP:192.168.0.1 |-----+eth0+-----+ OS: CENTOS 7 | | lo:3 | PUBLIC IP.2:178 | |

| MASK:255.255.255.0 | | X64 | | lo:4 | TYPE=FIBER | |

+--------------------+ +--------------+ | | |

| +-----------------+ |

| | Provider 03 | |

+------eth3+---------| PUBLIC IP:1 |------|

by DMZ | COAXIAL | |

+-----------------+ |

\__________***

José Sanabria

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May 18, 2017, 12:22:20 AM5/18/17

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FROM ADSL.PPP1:

[root@orion ~]# ping 201.217.40.113 -I ppp1 -c 2

PING 201.217.40.113 (201.217.40.113) from 177.251.54.95 ppp1: 56(84) bytes of data.

--- 201.217.40.113 ping statistics ---

2 packets transmitted, 0 received, 100% packet loss, time 999ms

FROM FIBER.PPP0:

[root@orion ~]# ping 201.217.40.113 -I ppp0 -c 2

PING 201.217.40.113 (201.217.40.113) from 177.250.60.193 ppp0: 56(84) bytes of data.

--- 201.217.40.113 ping statistics ---

2 packets transmitted, 0 received, 100% packet loss, time 1000ms

FROM LAN.ETH:

[root@orion ~]# ping 201.217.40.113 -I enp3s5 -c 2

PING 201.217.40.113 (201.217.40.113) from 192.168.0.1 enp3s5: 56(84) bytes of data.

--- 201.217.40.113 ping statistics ---

2 packets transmitted, 0 received, 100% packet loss, time 999ms

FROM COAXIAL:

[root@orion ~]# ping 201.217.40.113 -I enp2s0 -c 2

PING 201.217.40.113 (201.217.40.113) from 192.168.2.2 enp2s0: 56(84) bytes of data.

--- 201.217.40.113 ping statistics ---

2 packets transmitted, 0 received, 100% packet loss, time 999ms

FROM LOCALHOST:

[root@orion ~]# ping 201.217.40.113 -I lo -c 2

ping: Warning: source address might be selected on device other than lo.

PING 201.217.40.113 (201.217.40.113) from 201.217.40.113 lo: 56(84) bytes of data.

64 bytes from 201.217.40.113: icmp_seq=1 ttl=64 time=0.072 ms

64 bytes from 201.217.40.113: icmp_seq=2 ttl=64 time=0.057 ms

--- 201.217.40.113 ping statistics ---

2 packets transmitted, 2 received, 0% packet loss, time 999ms

rtt min/avg/max/mdev = 0.057/0.064/0.072/0.011 ms

[root@orion ~]#

Jatin Parmar

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May 18, 2017, 2:29:05 AM5/18/17

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Dear Jose,

Suspecting the internal routing issue.

Would you please crosscheck the configuration?

JATIN PARMAR

M.Tech BITS Pilani

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José Sanabria

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May 18, 2017, 8:49:40 AM5/18/17

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Now, I have:

[root@orion ~]# ifconfig
enp2s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet 192.168.2.2 netmask 255.255.255.252 broadcast 192.168.2.3
        inet6 fe80::1aa6:f7ff:fe00:8bde prefixlen 64 scopeid 0x20<link>
        ether 18:a6:f7:00:8b:de txqueuelen 1000 (Ethernet)

RX packets 387320 bytes 447015661 (426.3 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 228276 bytes 50054698 (47.7 MiB)

        TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s5: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet 192.168.0.1 netmask 255.255.255.0 broadcast 192.168.0.255
        inet6 fe80::9ade:d0ff:fe02:4e21 prefixlen 64 scopeid 0x20<link>
        ether 98:de:d0:02:4e:21 txqueuelen 1000 (Ethernet)

        RX packets 366846 bytes 53091956 (50.6 MiB)
        RX errors 0 dropped 12 overruns 0 frame 0
        TX packets 487038 bytes 454551915 (433.4 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet6 fe80::32b5:c2ff:fe02:cc97 prefixlen 64 scopeid 0x20<link>
ether 30:b5:c2:02:cc:97 txqueuelen 1000 (Ethernet)

RX packets 62769 bytes 16108236 (15.3 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 44021 bytes 24620619 (23.4 MiB)

        TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

enp3s7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet6 fe80::32b5:c2ff:fe02:dc1d prefixlen 64 scopeid 0x20<link>
        ether 30:b5:c2:02:dc:1d txqueuelen 1000 (Ethernet)

RX packets 40211 bytes 3167112 (3.0 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 8337 bytes 561712 (548.5 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 38136 bytes 4018818 (3.8 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 38136 bytes 4018818 (3.8 MiB)

        TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo:1: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
        inet 201.217.200.177 netmask 255.255.255.252
        loop txqueuelen 1 (Local Loopback)

lo:2: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
        inet 201.217.200.178 netmask 255.255.255.252
        loop txqueuelen 1 (Local Loopback)

lo:3: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
        inet 201.217.40.113 netmask 255.255.255.252
        loop txqueuelen 1 (Local Loopback)

lo:4: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
        inet 201.217.40.114 netmask 255.255.255.252
        loop txqueuelen 1 (Local Loopback)

ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1492

inet 177.250.60.193 netmask 255.255.255.255 destination 201.217.1.7

ppp txqueuelen 3 (Point-to-Point Protocol)

RX packets 55142 bytes 14436450 (13.7 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 36387 bytes 23361782 (22.2 MiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

ppp1: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1492

inet 177.251.54.95 netmask 255.255.255.255 destination 201.217.1.8

ppp txqueuelen 3 (Point-to-Point Protocol)

RX packets 22849 bytes 1596220 (1.5 MiB)

RX errors 0 dropped 0 overruns 0 frame 0

TX packets 702 bytes 87885 (85.8 KiB)

TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

[root@orion ~]# route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.2.1     0.0.0.0         UG    0      0        0 enp2s0
169.254.0.0     0.0.0.0         255.255.0.0     U     1002   0        0 enp2s0
169.254.0.0     0.0.0.0         255.255.0.0     U     1003   0        0 enp3s5
169.254.0.0     0.0.0.0         255.255.0.0     U     1004   0        0 enp3s6
192.168.0.0     0.0.0.0         255.255.255.0   U     0      0        0 enp3s5
192.168.2.0     0.0.0.0         255.255.255.252 U     0      0        0 enp2s0
201.217.1.7     0.0.0.0         255.255.255.255 UH    0      0        0 ppp0
201.217.1.8     0.0.0.0         255.255.255.255 UH    0      0        0 ppp1
201.217.31.10   201.217.1.7     255.255.255.255 UGH   0      0        0 ppp0
201.217.200.176 0.0.0.0         255.255.255.252 U     0      0        0 lo
201.217.40.12   0.0.0.0         255.255.255.252 U     0      0        0 lo
[root@orion ~]# ip route ls

default
nexthop via 192.168.2.1 dev enp2s0 weight 15

nexthop via 201.217.1.7 dev ppp0 weight 2
nexthop via 201.217.1.8 dev ppp1 weight 3

169.254.0.0/16 dev enp2s0 scope link metric 1002
169.254.0.0/16 dev enp3s5 scope link metric 1003
169.254.0.0/16 dev enp3s6 scope link metric 1004

192.168.0.0/24 dev enp3s5 proto kernel scope link src 192.168.0.1
192.168.2.0/30 dev enp2s0 proto kernel scope link src 192.168.2.2

201.217.1.7 dev ppp0 proto kernel scope link src 177.250.60.193
201.217.1.8 dev ppp1 proto kernel scope link src 177.251.54.95

201.217.31.10 via 201.217.1.7 dev ppp0

201.217.200.176/30 dev lo proto kernel scope link src 201.217.200.177
201.217.40.12/30 dev lo proto kernel scope link src 201.217.40.113
[root@orion ~]#

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