Active-Backup

These scenarios cover some aspects related to link-aggregation (combining multiple network connections simultaneously to increase throughput, provide redundancy, or both). In OSDx, this can be achieved through bonding interfaces.

../../../../_images/topology.svg

Test Active-Backup

Description

A bonding interface is configured in DUT0 using the active-backup mode. This mode can be used to achieve a higher degree of fault-tolerance.

Scenario

Example 1

Step 1: Set the following configuration in DUT0 :

set interfaces bonding bond0 address 192.168.100.10/24
set interfaces bonding bond0 miimon 100
set interfaces bonding bond0 mode active-backup
set interfaces ethernet eth0p0 bond-group bond0
set interfaces ethernet eth1 bond-group bond0
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces bridge br0 address 192.168.100.20/24
set interfaces bridge br0 stp version rstp
set interfaces ethernet eth0 bridge-group bridge br0
set interfaces ethernet eth2 bridge-group bridge br0
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces bonding show at DUT0 and check if output matches the following regular expressions:

bond0\s+192.168.100\.10\/24\s+up\s+up
Show output
---------------------------------------------------------------
Name          IP Address          Admin  Oper  Vrf  Description
---------------------------------------------------------------
bond0  192.168.100.10/24          up     up
       fe80::2a0:26ff:fe16:16/64

Step 4: Run command interfaces bonding bond0 show ports at DUT0 and check if output contains the following tokens:

Bonding Mode: fault-tolerance (active-backup)
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0p0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:a0:26:16:00:16
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 5: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 1 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.586 ms

--- 192.168.100.20 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.586/0.586/0.586/0.000 ms

Warning

Now, it is important to disconnect one of the bonded interfaces.

Step 6: Run command interfaces ethernet clear at DUT0.

Step 7: Run command interfaces bonding bond0 show ports at DUT0 and check if output matches the following regular expressions:

Currently Active Slave: eth0p0
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0p0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth1
MII Status: down
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:a0:26:16:00:16
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 8: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 5 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.338 ms
64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.321 ms
64 bytes from 192.168.100.20: icmp_seq=3 ttl=64 time=0.348 ms
64 bytes from 192.168.100.20: icmp_seq=4 ttl=64 time=0.300 ms
64 bytes from 192.168.100.20: icmp_seq=5 ttl=64 time=0.325 ms

--- 192.168.100.20 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4085ms
rtt min/avg/max/mdev = 0.300/0.326/0.348/0.016 ms

Step 9: Run command interfaces ethernet show counters at DUT0 and check if output matches the following regular expressions:

eth1 \s+down\s+\d+\s+\d+\s+\d+\s+0\s+0
Show output
------------------------------------------------------------------------------
 Name   Oper  Rx Packets  Rx Bytes  Rx Errors  Tx Packets  Tx Bytes  Tx Errors
------------------------------------------------------------------------------
eth0p0  up             6       794          0           5       490          0
eth0p1  down           0         0          0           0         0          0
eth0p2  down           0         0          0           0         0          0
eth0p3  down           0         0          0           0         0          0
eth0p4  down           0         0          0           0         0          0
eth0p5  down           0         0          0           0         0          0
eth0p6  down           0         0          0           0         0          0
eth0p7  down           0         0          0           0         0          0
  eth1  down           0         0          0           0         0          0
  eth2  down           0         0          0           0         0          0

Warning

Now, it is important to disconnect the remaining bonded interface, and reconnect the previous one.

Step 10: Run command interfaces ethernet clear at DUT0.

Step 11: Run command interfaces bonding bond0 show ports at DUT0 and check if output matches the following regular expressions:

Currently Active Slave: eth1
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:a0:26:16:00:16
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: down
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 12: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 5 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.579 ms
64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.364 ms
64 bytes from 192.168.100.20: icmp_seq=3 ttl=64 time=0.400 ms
64 bytes from 192.168.100.20: icmp_seq=4 ttl=64 time=0.358 ms
64 bytes from 192.168.100.20: icmp_seq=5 ttl=64 time=0.381 ms

--- 192.168.100.20 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4077ms
rtt min/avg/max/mdev = 0.358/0.416/0.579/0.082 ms

Step 13: Run command interfaces ethernet show counters at DUT0 and check if output matches the following regular expressions:

eth0p0 \s+down\s+\d+\s+\d+\s+\d+\s+0\s+0
Show output
------------------------------------------------------------------------------
 Name   Oper  Rx Packets  Rx Bytes  Rx Errors  Tx Packets  Tx Bytes  Tx Errors
------------------------------------------------------------------------------
eth0p0  down           0         0          0           0         0          0
eth0p1  down           0         0          0           0         0          0
eth0p2  down           0         0          0           0         0          0
eth0p3  down           0         0          0           0         0          0
eth0p4  down           0         0          0           0         0          0
eth0p5  down           0         0          0           0         0          0
eth0p6  down           0         0          0           0         0          0
eth0p7  down           0         0          0           0         0          0
  eth1  up             6       550          0          11      1050          0
  eth2  down           0         0          0           0         0          0

Example 2

Step 1: Set the following configuration in DUT0 :

set interfaces bonding bond0 address 192.168.100.10/24
set interfaces bonding bond0 miimon 100
set interfaces bonding bond0 mode active-backup
set interfaces ethernet eth0p0 bond-group bond0
set interfaces ethernet eth0p1 bond-group bond0
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 2: Set the following configuration in DUT1 :

set interfaces bridge br0 address 192.168.100.20/24
set interfaces bridge br0 stp version rstp
set interfaces ethernet eth2 bridge-group bridge br0
set interfaces ethernet eth3 bridge-group bridge br0
set system login user admin authentication encrypted-password '$6$GSjsCj8gHLv$/VcqU6FLi6CT2Oxn0MJQ2C2tqnRDrYKNF8HIYWJp68nvXvPdFccDsT04.WtigUONbKYrgKg8d6rEs8PjljMkH0'

Step 3: Run command interfaces bonding show at DUT0 and check if output matches the following regular expressions:

bond0\s+192.168.100\.10\/24\s+up\s+up
Show output
--------------------------------------------------------------
Name          IP Address         Admin  Oper  Vrf  Description
--------------------------------------------------------------
bond0  192.168.100.10/24         up     up
       fe80::a0:26ff:fe16:15/64

Step 4: Run command interfaces bonding bond0 show ports at DUT0 and check if output contains the following tokens:

Bonding Mode: fault-tolerance (active-backup)
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0p0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth0p1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 02:a0:26:16:00:15
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 5: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 1 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.510 ms

--- 192.168.100.20 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.510/0.510/0.510/0.000 ms

Warning

Now, it is important to disconnect one of the bonded interfaces.

Step 6: Run command interfaces ethernet clear at DUT0.

Step 7: Run command interfaces bonding bond0 show ports at DUT0 and check if output matches the following regular expressions:

Currently Active Slave: eth0p1
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0p1
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth0p1
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 0
Permanent HW addr: 02:a0:26:16:00:15
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: down
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 8: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 5 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.335 ms
64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.375 ms
64 bytes from 192.168.100.20: icmp_seq=3 ttl=64 time=0.365 ms
64 bytes from 192.168.100.20: icmp_seq=4 ttl=64 time=0.340 ms
64 bytes from 192.168.100.20: icmp_seq=5 ttl=64 time=0.341 ms

--- 192.168.100.20 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4073ms
rtt min/avg/max/mdev = 0.335/0.351/0.375/0.015 ms

Step 9: Run command interfaces ethernet show counters at DUT0 and check if output matches the following regular expressions:

eth0p0 \s+down\s+\d+\s+\d+\s+\d+\s+0\s+0
Show output
------------------------------------------------------------------------------
 Name   Oper  Rx Packets  Rx Bytes  Rx Errors  Tx Packets  Tx Bytes  Tx Errors
------------------------------------------------------------------------------
eth0p0  down           0         0          0           0         0          0
eth0p1  up             6       794          0           5       490          0
eth0p2  down           0         0          0           0         0          0
eth0p3  down           0         0          0           0         0          0
eth0p4  down           0         0          0           0         0          0
eth0p5  down           0         0          0           0         0          0
eth0p6  down           0         0          0           0         0          0
eth0p7  down           0         0          0           0         0          0
  eth1  down           0         0          0           0         0          0
  eth2  down           0         0          0           0         0          0

Warning

Now, it is important to disconnect the remaining bonded interface, and reconnect the previous one.

Step 10: Run command interfaces ethernet clear at DUT0.

Step 11: Run command interfaces bonding bond0 show ports at DUT0 and check if output matches the following regular expressions:

Currently Active Slave: eth0p0
Show output
Ethernet Channel Bonding Driver: v6.12.20

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth0p0
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 0
Down Delay (ms): 0
Peer Notification Delay (ms): 0

Slave Interface: eth0p1
MII Status: down
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 02:a0:26:16:00:15
Slave queue ID: 0

Slave Interface: eth0p0
MII Status: up
Speed: 1000 Mbps
Duplex: full
Link Failure Count: 1
Permanent HW addr: 00:a0:26:16:00:15
Slave queue ID: 0

Step 12: Ping IP address 192.168.100.20 from DUT0:

admin@DUT0$ ping 192.168.100.20 count 5 size 56 timeout 1
Show output
PING 192.168.100.20 (192.168.100.20) 56(84) bytes of data.
64 bytes from 192.168.100.20: icmp_seq=1 ttl=64 time=0.580 ms
64 bytes from 192.168.100.20: icmp_seq=2 ttl=64 time=0.385 ms
64 bytes from 192.168.100.20: icmp_seq=3 ttl=64 time=0.353 ms
64 bytes from 192.168.100.20: icmp_seq=4 ttl=64 time=0.315 ms
64 bytes from 192.168.100.20: icmp_seq=5 ttl=64 time=0.346 ms

--- 192.168.100.20 ping statistics ---
5 packets transmitted, 5 received, 0% packet loss, time 4101ms
rtt min/avg/max/mdev = 0.315/0.395/0.580/0.094 ms

Step 13: Run command interfaces ethernet show counters at DUT0 and check if output matches the following regular expressions:

eth0p1 \s+down\s+\d+\s+\d+\s+\d+\s+0\s+0
Show output
------------------------------------------------------------------------------
 Name   Oper  Rx Packets  Rx Bytes  Rx Errors  Tx Packets  Tx Bytes  Tx Errors
------------------------------------------------------------------------------
eth0p0  up             9      1462          0          11      1050          0
eth0p1  down           0         0          0           0         0          0
eth0p2  down           0         0          0           0         0          0
eth0p3  down           0         0          0           0         0          0
eth0p4  down           0         0          0           0         0          0
eth0p5  down           0         0          0           0         0          0
eth0p6  down           0         0          0           0         0          0
eth0p7  down           0         0          0           0         0          0
  eth1  down           0         0          0           0         0          0
  eth2  down           0         0          0           0         0          0