3. Amazon EC2
- VPC
- direct connect
- extends our internal network
- secondary ip address limitations
4. Overlay network
- GRE
- MTU issues
- EC2 instances with jumbo frame support
CC2, C3, R3, CG1, CR1
G2, HS1, HI1, I2, M3
5. GRE configuration
#ip tunnel del gre1
ip tunnel add gre1 mode gre remote 67.215.78.24 local 10.70.74.187 ttl 255
ip tunnel add gre1 mode gre remote 10.1.1.1 local 10.70.74.187 ttl 255
ip link set gre1 up
ip addr add 10.71.0.2/30 dev gre1
echo 200 quadranet >> /etc/iproute2/rt_tables
ip rule add from 10.71.1.0/24 table quadranet
ip route add default via 10.71.0.1 dev gre1 table quadranet
12. Linux Network Namespaces
# Add the address to the containers loopback interface
ip netns exec "${NSPID}" ip addr add "${GUEST_IPADDR}" dev lo
# Add a route to the host's table for the guest's new IP
ip route add "${GUEST_IPADDR}/32" via "${DOCKER_IPADDR}"