A daemon, running in background on a Linux router or firewall, monitoring the state of multiple internet uplinks/providers and changing the routing accordingly. LAN/DMZ internet traffic is load balanced between the uplinks.
License: GNU General Public License v2.0
Before I added multiple uplinks, I had port forwarding working through rules like:
*nat
-A PREROUTING -p tcp -m tcp -i ppp0 --dport 8080 -j DNAT --to-destination 192.168.1.212:80
*filter
-A FORWARD -p tcp -d 192.168.1.212 --dport 8080 -j ACCEPT
Now it no longer works. What's the right way to do this once fault_tolerant_router is running things?
Hi, i have 2 ethernet uplink interfaces i wish to balance (both from office LANs). The address assignment is dhcp. Will specifying 'pop' as the type get an address from the dhcp server, or is this only for pop connections?
Cheers
Implement routing using realms: this way we could connect all of the uplinks to a single Linux physical interface through a switch, without using VLANs.
Test using VLAN interfaces: Fault Tolerant Router has always been used with physical interfaces, each uplink on it's own physical interface.
To prevent the main monitor thread to sit waiting for SMTP timeout in case the SMTP server is not reachable.
Create an Uplink class instead of using an hash.
i18n of email notifications, for non English speakers.
A web service interface to query the status of the uplinks. A customer asked me to create a web control panel, where you can see the status of all of the uplinks: headquarters and subsidiaries.
Useful to only use pay-per-traffic uplinks if no regular uplink is working.
Each uplink is a member of a priority group. The highest priority group with at least one working uplink is choosen and its members are load balanced. Lower priority group members are not used, unless all higher priority group members are down.
To avoid misspelled parameters that would otherwise be ignored:
Triggers launching external scripts when an uplink goes up or down, for example to change some parameters in a mail server.
error received when running. Attempting to route traffic from wlan0 (AP) to 2 etc{1,3} addresses:
$ fault_tolerant_router monitor
/var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplink.rb:65:in detect_ppp_ips!': undefined methodip_address' for nil:NilClass (NoMethodError)
from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplink.rb:45:in initialize' from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:innew'
from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:in block in initialize' from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:ineach'
from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:in each_with_index' from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:ineach'
from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:in map' from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/lib/fault_tolerant_router/uplinks.rb:5:ininitialize'
from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/bin/fault_tolerant_router:150:in new' from /var/lib/gems/2.1.0/gems/fault_tolerant_router-1.2.0/bin/fault_tolerant_router:150:in<top (required)>'
from /usr/local/bin/fault_tolerant_router:23:in load' from /usr/local/bin/fault_tolerant_router:23:in
Config file:
uplinks:
downlinks:
lan: wlan0
#leave blank if you have no DMZ
dmz:
tests:
#an array of IP addresses to ping to verify the uplinks state. You can add as
#many as you wish. Predefined ones are Google DNS, OpenDNS DNS, other public
#DNS. Every time an uplink is tested the IP addresses are shuffled, so listing
#order is not important.
ips:
log:
#file: "/var/log/fault_tolerant_router.log"
file: "/tmp/fault_tolerant_router.log"
#maximum log file size (in bytes). Once reached this size, the log file will
#be rotated.
max_size: 1024000
#number of old rotated files to keep
old_files: 10
email:
send: false
sender: [email protected]
recipients:
base_table: 1
base_priority: 40000
base_fwmark: 1
When I try to run the latest fault_tolerant_router package on a raspi 3 I am seeing the following issue:
$ fault_tolerant_router generate_config
/usr/local/bin/fault_tolerant_router:23:in `load': /var/lib/gems/1.8/gems/fault_tolerant_router-1.2.0/bin/fault_tolerant_router:75: odd number list for Hash (SyntaxError)
configuration_file: '/etc/fault_tolerant_router.conf',
^
/var/lib/gems/1.8/gems/fault_tolerant_router-1.2.0/bin/fault_tolerant_router:75: syntax error, unexpected ':', expecting '}'
configuration_file: '/etc/fault_tolerant_router.conf',
^
/var/lib/gems/1.8/gems/fault_tolerant_router-1.2.0/bin/fault_tolerant_router:75: syntax error, unexpected ',', expecting $end
from /usr/local/bin/fault_tolerant_router:23
Any suggestions?
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such file or directory
RTNETLINK answers: No such process
RTNETLINK answers: No such process
RTNETLINK answers: No such process
RTNETLINK answers: No such process
RTNETLINK answers: No such process
RTNETLINK answers: No such process
with cons file:
uplinks:
downlinks:
lan: wlan0
#leave blank if you have no DMZ
dmz:
tests:
#an array of IP addresses to ping to verify the uplinks state. You can add as
#many as you wish. Predefined ones are Google DNS, OpenDNS DNS, other public
#DNS. Every time an uplink is tested the IP addresses are shuffled, so listing
#order is not important.
ips:
log:
#file: "/var/log/fault_tolerant_router.log"
file: "/tmp/fault_tolerant_router.log"
#maximum log file size (in bytes). Once reached this size, the log file will
#be rotated.
max_size: 1024000
#number of old rotated files to keep
old_files: 10
email:
send: false
sender: [email protected]
recipients:
base_table: 1
base_priority: 40000
base_fwmark: 1
I've configured my adapters in the config while, and whenever I monitor, I get something like this:
# fault_tolerant_router monitor
RTNETLINK answers: Invalid argument
RTNETLINK answers: Invalid argument
bind: Cannot assign requested address
bind: Cannot assign requested address
bind: Cannot assign requested address
bind: Cannot assign requested address
bind: Cannot assign requested address
...
And here's the output with --debug:
Uplink LAN: ping 208.67.222.222... bind: Cannot assign requested address
error
Uplink LAN: ping 4.2.2.3... bind: Cannot assign requested address
error
Uplink LAN: ping 8.8.8.8... bind: Cannot assign requested address
error
Uplink LAN: ping 8.8.4.4... bind: Cannot assign requested address
error
Uplink LAN: ping 208.67.220.220... bind: Cannot assign requested address
error
Uplink LAN: avoiding more tests because too many have been failed
Uplink LAN: 0 successful tests, 5 unsuccessful tests, state down
Uplink Internal Wi-Fi: ping 4.2.2.2... bind: Cannot assign requested address
error
Uplink Internal Wi-Fi: ping 208.67.220.220... bind: Cannot assign requested address
error
Uplink Internal Wi-Fi: ping 208.67.222.222... bind: Cannot assign requested address
error
Uplink Internal Wi-Fi: ping 4.2.2.3... bind: Cannot assign requested address
error
Uplink Internal Wi-Fi: ping 8.8.8.8... bind: Cannot assign requested address
error
Uplink Internal Wi-Fi: avoiding more tests because too many have been failed
Uplink Internal Wi-Fi: 0 successful tests, 5 unsuccessful tests, state down
Choosing default route: available uplinks:
Choosing default route: highest priority group uplinks:
Choosing default route: no available uplinks, no need for an update
No waiting, because all of the priority group members are down
...
And there's my config:
#see https://github.com/drsound/fault_tolerant_router for a complete parameter
#description
#add as many uplinks as needed, in this example ppp0 is used as default route only if both eth1 and eth2 are down
uplinks:
- interface: enp2s0
type: static
ip: 192.168.1.16
gateway: 192.168.1.1
description: LAN
priority_group: 1
- interface: wlp4s0
type: static
ip: 192.168.1.116
gateway: 192.168.1.1
description: Internal Wi-Fi
downlinks:
lan: eth0
#leave blank if you have no DMZ
dmz:
tests:
#an array of IP addresses to ping to verify the uplinks state. You can add as
#many as you wish. Predefined ones are Google DNS, OpenDNS DNS, other public
#DNS. Every time an uplink is tested the IP addresses are shuffled, so listing
#order is not important.
ips:
- 8.8.8.8
- 8.8.4.4
- 208.67.222.222
- 208.67.220.220
- 4.2.2.2
- 4.2.2.3
#number of successfully pinged IP addresses to consider an uplink to be
#functional
required_successful: 2
#number of ping retries before giving up on an IP
ping_retries: 1
#seconds between a check of the uplinks and the next one
interval: 60
log:
#file: "/var/log/fault_tolerant_router.log"
file: "/tmp/fault_tolerant_router.log"
#maximum log file size (in bytes). Once reached this size, the log file will
#be rotated.
max_size: 1024000
#number of old rotated files to keep
old_files: 10
email:
send: false
sender: [email protected]
recipients:
- [email protected]
- [email protected]
- [email protected]
#see http://ruby-doc.org/stdlib-2.3.1/libdoc/net/smtp/rdoc/Net/SMTP.html
smtp_parameters:
address: smtp.gmail.com
port: 587
#domain: domain.com
authentication: :login
enable_starttls_auto: true
user_name: [email protected]
password: secret-password
#base IP route table number, just need to change if you are already using
#multiple routing tables
base_table: 1
#just need to change if you are already using ip policy routing, to avoid
#overlapping, must be higher than 32767 (the default routing table priority,
#see output of "ip rule" command)
base_priority: 40000
#just need to change if you are already using packet marking, to avoid
#overlapping
base_fwmark: 1
Fault Tolerant Router is already working fine with dynamic IP uplinks, if they provide NAT (for example DSL routers). The problem is with dynamic IP uplinks that assign such dynamic IP directly on Linux interface, for example USB 3G dongles using PPP interfaces. See issue #11.
While technically it will work (still), considering the fact that this is freshly released project I would suggest you to replace usage of iptables state module with conntrack module.
The state module is considered obsolete and conntrack is its (more powerful) replacement
Avoid using and testing a PPP interface if it has no IP address (for examle because it is in handshake phase or the DSL is down).
I have 2 uplinks, one is DSL with a static IP address, and the other is a roof top wireless ISP that spits out dynamic addresses. I don't see any instructions in the readme nor in the config file on how to specify that a particular interface is dynamically set. Am I missing where to find these instructions? Thanks!
Once fault_tolerant_router terminates, routing tables are left in their current state. This is a good thing, otherwise you could lose access to the system (suppose you are accessing via SSH). If you want to reset the routing tables to the status they were in before running fault_tolerant_router, you have to do it by hand. I would like to add a new command to avoid this manual task.
Set /proc/sys/net/ipv4/ip_forward = 1 once monitor is started, do not expect the user to know about it and to do it by himself.
Hi Guys,
When we try to run fault_tolerant_router, I am getting some syntax issue with ip route command. I am trying to replicate fault tolerant router in my local setup. I am getting is error.
base machine: Linux mint = 18
Kernel Version = 4.4.0-21 generic
Please let us know which base machine you guys tested, so that I can try to replicate.
mint@mint /tmp $ sudo fault_tolerant_router --debug monitor`
Choosing default route: available uplinks: AirTel, AirCel
Choosing default route: highest priority group uplinks: AirTel, AirCel
Choosing default route: changes detected, update needed
Command: echo 1 > /proc/sys/net/ipv4/ip_forward
Command: ip rule del priority 40000 &> /dev/null
Command: ip rule del priority 40001 &> /dev/null
Command: ip rule del priority 40002 &> /dev/null
Command: ip rule del priority 40003 &> /dev/null
Command: ip rule del priority 40004 &> /dev/null
RTNETLINK answers: No such file or directory
Command: ip rule del priority 40005 &> /dev/null
RTNETLINK answers: No such file or directory
Command: ip rule del priority 40006 &> /dev/null
RTNETLINK answers: No such file or directory
Command: ip rule del priority 40007 &> /dev/null
RTNETLINK answers: No such file or directory
Command: ip rule del priority 40008 &> /dev/null
RTNETLINK answers: No such file or directory
Command: ip rule del priority 40009 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 1 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 2 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 3 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 4 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 5 &> /dev/null
Usage: ip route { list | flush } SELECTOR
ip route save SELECTOR
ip route restore
ip route showdump
ip route get ADDRESS [ from ADDRESS iif STRING ]
[ oif STRING ] [ tos TOS ]
[ mark NUMBER ]
ip route { add | del | change | append | replace } ROUTE
SELECTOR := [ root PREFIX ] [ match PREFIX ] [ exact PREFIX ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ type TYPE ] [ scope SCOPE ]
ROUTE := NODE_SPEC [ INFO_SPEC ]
NODE_SPEC := [ TYPE ] PREFIX [ tos TOS ]
[ table TABLE_ID ] [ proto RTPROTO ]
[ scope SCOPE ] [ metric METRIC ]
INFO_SPEC := NH OPTIONS FLAGS [ nexthop NH ]...
NH := [ via [ FAMILY ] ADDRESS ] [ dev STRING ] [ weight NUMBER ] NHFLAGS
FAMILY := [ inet | inet6 | ipx | dnet | mpls | bridge | link ]
OPTIONS := FLAGS [ mtu NUMBER ] [ advmss NUMBER ] [ as [ to ] ADDRESS ]
[ rtt TIME ] [ rttvar TIME ] [ reordering NUMBER ]
[ window NUMBER] [ cwnd NUMBER ] [ initcwnd NUMBER ]
[ ssthresh NUMBER ] [ realms REALM ] [ src ADDRESS ]
[ rto_min TIME ] [ hoplimit NUMBER ] [ initrwnd NUMBER ]
[ features FEATURES ] [ quickack BOOL ] [ congctl NAME ]
[ pref PREF ]
TYPE := [ unicast | local | broadcast | multicast | throw |
unreachable | prohibit | blackhole | nat ]
TABLE_ID := [ local | main | default | all | NUMBER ]
SCOPE := [ host | link | global | NUMBER ]
NHFLAGS := [ onlink | pervasive ]
RTPROTO := [ kernel | boot | static | NUMBER ]
PREF := [ low | medium | high ]
TIME := NUMBER[s|ms]
BOOL := [1|0]
FEATURES := ecn
Command: ip route del table 6 &> /dev/null
Command: echo 0 > /proc/sys/net/ipv4/conf/all/rp_filter
Command: echo 2 > /proc/sys/net/ipv4/conf/enp2s2/rp_filter
Command: echo 2 > /proc/sys/net/ipv4/conf/ens32/rp_filter
Command: ip route replace table 1 default via 192.168.200.100 src 192.168.200.89
Command: ip rule add priority 40000 from 192.168.200.89 lookup 1
Command: ip rule add priority 40002 fwmark 1 lookup 1
Command: ip route replace table 2 default via 192.168.70.100 src 192.168.70.89
Command: ip rule add priority 40001 from 192.168.70.89 lookup 2
Command: ip rule add priority 40003 fwmark 2 lookup 2
Command: ip rule add priority 40004 from all lookup 3
Command: ip route replace table 3 default nexthop via 192.168.200.100 weight 1 nexthop via 192.168.70.100 weight 2
Command: ip route flush cache
Uplink AirTel: ping 4.2.2.2... ok
Uplink AirTel: ping 4.2.2.3... ok
Uplink AirTel: ping 8.8.8.8... ok
Uplink AirTel: ping 8.8.4.4... ok
Uplink AirTel: avoiding more tests because there are enough positive ones
Uplink AirTel: 4 successful tests, 0 unsuccessful tests, state up
Uplink AirCel: ping 8.8.8.8... ok
Uplink AirCel: ping 208.67.222.222... ok
Uplink AirCel: ping 4.2.2.2... ok
Uplink AirCel: ping 4.2.2.3... ok
Uplink AirCel: avoiding more tests because there are enough positive ones
Uplink AirCel: 4 successful tests, 0 unsuccessful tests, state up
Choosing default route: available uplinks: AirTel, AirCel
Choosing default route: highest priority group uplinks: AirTel, AirCel
Choosing default route: no changes, no need for an update
Waiting 60 seconds...
Uplink AirTel: ping 8.8.4.4... ok
Uplink AirTel: ping 4.2.2.2... ok
Uplink AirTel: ping 4.2.2.3... ok
Uplink AirTel: ping 8.8.8.8... ok
Uplink AirTel: avoiding more tests because there are enough positive ones
Uplink AirTel: 4 successful tests, 0 unsuccessful tests, state up
Uplink AirCel: ping 208.67.222.222... ok
Uplink AirCel: ping 4.2.2.2... ok
Uplink AirCel: ping 4.2.2.3... ok
Uplink AirCel: ping 208.67.220.220... ok
Uplink AirCel: avoiding more tests because there are enough positive ones
Uplink AirCel: 4 successful tests, 0 unsuccessful tests, state up
Choosing default route: available uplinks: AirTel, AirCel
Choosing default route: highest priority group uplinks: AirTel, AirCel
Choosing default route: no changes, no need for an update
Waiting 60 seconds...
`
If no uplinks are up, set tests/interval configuration option to 0, to get bandwidth as soon as an uplink comes back up.
Please test and report if PPP interface support works correctly: I only did some local tests because I have no real PPP uplink.
React
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Typescript
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