Category: Networking

Bonding in active-backup using linux bridges on Ubuntu 18

Because this was WAAYY more difficult to find any decent doco on that I had ever expected, here is what worked for me

I deleted the netplan config file at /etc/netplan/01-netcfg.yaml

rm /etc/netplan/01-netcfg.yaml

Ensure that ‘bonding’ appears in /etc/modules (I’s not here by default)

echo bonding >> /etc/modules

 

Here is /etc/network/interfaces

source-directory /etc/network/interfaces.d
auto lo
iface lo inet loopback

allow-hotplug ens3f0
iface ens3f0 inet manual
bond-master bond0

allow-hotplug ens3f1
iface ens3f1 inet manual
bond-master bond0

allow-hotplug bond0
iface bond0 inet static
address 172.16.103.12/24
gateway 172.16.103.254
mtu 9000

bond-mode active-backup
bond-miimon 100
bond-slaves none

 

Linux static routes & fixing “Error: either “to” is duplicate, or gw is a garbage.”

I was having troubles adding a route using ip route, I was getting “Error: either “to” is duplicate, or “172.16.1.254” is a garbage.”

[root@adlwest-nms1 ~]# ip route add 172.16.103.0/24 172.16.1.254 dev eth1
Error: either "to" is duplicate, or "172.16.1.254" is a garbage.

But running ip route add subnet/netmask via gw worked

[root@adlwest-nms1 ~]# ip route add 172.16.103.0/24 via 172.16.1.254
[root@adlwest-nms1 ~]# ping 172.16.103.41
PING 172.16.103.41 (172.16.103.41) 56(84) bytes of data.
64 bytes from 172.16.103.41: icmp_seq=1 ttl=62 time=1.04 ms
64 bytes from 172.16.103.41: icmp_seq=2 ttl=62 time=0.992 ms

Get public IP from command line in linux

wget http://ipecho.net/plain -qO-

 

Original article here – https://www.if-not-true-then-false.com/2010/linux-get-ip-address/

Mikrotik BGP

To show what routes you are receiving from a particular peer on Mikrotik

 

ip route print detail where received-from={PeerName}

 

OR

ip route print detail where bgp-as-path=123456

Quanta LB6M commands

From http://www.kontron.com/downloads/software/fastpath-configuration-guide-v1.2.pdf?product=89439

3.2.1.2

Example 2: Set Up VLAN Routing for the VLANs and the Switch.

The following code sequence shows how to enable routing for the VLANs:

(Ethernet Fabric) #vlan database
(Ethernet Fabric) (Vlan) #vlan routing 10
(Ethernet Fabric) (Vlan) #vlan routing 20
(Ethernet Fabric) (Vlan) #exit
(Ethernet Fabric) #show ip vlan
This returns the logical interface IDs that will be used
instead of slot/port in subsequent routing commands.
Assume that VLAN 10 is assigned ID
2/1 and VLAN 20 is assigned ID 2/2.
Enable routing for the switch:
(Ethernet Fabric) (Config) #config
(Ethernet Fabric) (Config) #ip routing
(Ethernet Fabric) (Config) #exit
The next sequence shows an example of conf iguring the
IP addresses and subnet masks for the virtual router
ports.
(Ethernet Fabric) (Config) #config
(Ethernet Fabric) (Config) #interface 2/1
(Ethernet Fabric) (Config) (Interface 2/1) #ip address 192.150.3.1 255.255.255.0
(Ethernet Fabric) (Config) (Interface 2/1) #exit
(Ethernet Fabric) (Config) #interface 2/2
(Ethernet Fabric) (Config) (Interface 2/2) #ip address 192.150.4.1 255.255.255.0
(Ethernet Fabric) (Config) (Interface 2/2) #exit
(Ethernet Fabric) (Config) #exit

(S2) #ip ssh server enable

 

(S2) #show spanning-tree mst port summary 0 all

            STP                  STP            Port
Interface   Mode   Type         State           Role       Desc
--------- -------- ------- ----------------- ---------- ----------
0/1       Enabled          Disabled          Disabled
0/2       Enabled          Disabled          Disabled
0/3       Enabled          Forwarding        Root
0/4       Enabled          Discarding        Alternate
0/5       Enabled          Disabled          Disabled
0/6       Enabled          Disabled          Disabled
0/7       Enabled          Disabled          Disabled
0/8       Enabled          Disabled          Disabled
0/9       Enabled          Disabled          Disabled
0/10      Enabled          Disabled          Disabled
0/11      Enabled          Disabled          Disabled
0/12      Enabled          Disabled          Disabled
0/13      Enabled          Disabled          Disabled
0/14      Enabled          Disabled          Disabled
0/15      Enabled          Disabled          Disabled

(S2) #show port all

                  Admin    Physical   Physical   Link   Link    LACP   Actor
 Intf      Type   Mode     Mode       Status     Status Trap    Mode   Timeout
--------- ------ --------- ---------- ---------- ------ ------- ------ --------
0/1              Enable    10G Full              Down   Enable  Enable long
0/2              Enable    10G Full              Down   Enable  Enable long
0/3              Enable    10G Full   10G Full   Up     Enable  Enable long
0/4              Enable    10G Full   10G Full   Up     Enable  Enable long
0/5              Enable    10G Full              Down   Enable  Enable long
0/6              Enable    10G Full              Down   Enable  Enable long
0/7              Enable    10G Full              Down   Enable  Enable long
0/8              Enable    10G Full              Down   Enable  Enable long
0/9              Enable    10G Full              Down   Enable  Enable long
0/10             Enable    10G Full              Down   Enable  Enable long
0/11             Enable    10G Full              Down   Enable  Enable long
0/12             Enable    10G Full              Down   Enable  Enable long
0/13             Enable    10G Full              Down   Enable  Enable long
0/14             Enable    10G Full              Down   Enable  Enable long
0/15             Enable    10G Full              Down   Enable  Enable long
0/16             Enable    10G Full              Down   Enable  Enable long
0/17             Enable    10G Full   10G Full   Up     Enable  Enable long
0/18             Enable    10G Full              Down   Enable  Enable long