forked from spinesystemspublic/documentation
77 lines
1.8 KiB
Markdown
77 lines
1.8 KiB
Markdown
## Bonding
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Typical bonding configuration
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```
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modprobe i40e
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modprobe bonding
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ip link add dev bond0 type bond
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ip link set dev eth4 down
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ip link set dev eth5 down
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ip link set dev eth6 down
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ip link set dev eth7 down
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ip link set dev bond0 down
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echo 802.3ad >/sys/devices/virtual/net/bond0/bonding/mode
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echo "layer3+4" >/sys/devices/virtual/net/bond0/bonding/xmit_hash_policy
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ip link set dev eth4 master bond0
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ip link set dev eth5 master bond0
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ip link set dev eth6 master bond0
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ip link set dev eth7 master bond0
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ip link set dev eth4 up
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ip link set dev eth5 up
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ip link set dev eth6 up
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ip link set dev eth7 up
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ip link set dev bond0 up
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```
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### Cisco Nexus
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```
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interface port-channel4
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description To-GlobalOS
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switchport mode trunk
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switchport trunk native vlan 2701
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switchport trunk allowed vlan 2584-2591,2701,2798,2901-2902
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no negotiate auto
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interface Ethernet1/21
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description To-GlobalOS
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switchport mode trunk
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switchport trunk native vlan 2701
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switchport trunk allowed vlan 2584-2591,2701,2798,2901-2902
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channel-group 4 mode active
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interface Ethernet1/22
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description To-GlobalOS
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switchport mode trunk
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switchport trunk native vlan 2701
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switchport trunk allowed vlan 2584-2591,2701,2798,2901-2902
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channel-group 4 mode active
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```
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## Troubleshooting
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### Packetloss
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* This kind of fast ping need to be applied only on ethernet links with MTU 1500. No packetloss should be present.
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```
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ping -c 1000 -i 0.01 -s1472 127.0.0.1
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ping -c 1000 -i 0.01 -s1472 nearby.ip
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```
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* Check if any dropped counter are increasing
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```
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tc -s -d qdisc show
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```
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* Check SFP signal level (if SFP supports DDM/DOM)
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```
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ethtool -m eth4
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```
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You might need to tune icmp rate limit if too many people ping this host:
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```
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net.ipv4.icmp_msgs_per_sec = 10000
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net.ipv4.icmp_ratelimit = 100000
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net.ipv4.icmp_msgs_burst=1000
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```
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