High Availability Server Clustering without ILB(Internal Load Balancer) (MEMO) 20-Feb-2015 SAKURA Internet Research Center. Senior Researcher / Naoto MATSUMOTO

1. 20-Feb-2015
SAKURA Internet Research Center.
Senior Researcher / Naoto MATSUMOTO

2. Basic Ideas
Break the public cloud's limitation using l2tpv3 & ospfv3 on linux.

3. How does it works
The Internal traffic go through "OSPFv3 over L2TPv3" selected route.

4. Failover scenario
OSPFv3 LSA update and IPv6 Anycast (redistributed connected)

5. DB Configuration (CentOS7)
$ sudo su
# yum install -y quagga iptables-services net-tools traceroute tcpdump
# echo "net.ipv6.conf.all.forwarding = 1" > /etc/sysctl.conf
# cp -p /etc/quagga/zebra.conf /etc/quagga/ospf6d.conf
# setsebool -P zebra_write_config 1
# systemctl mask firewalld ; systemctl disable ip6tables
# systemctl enable ospf6d ; systemctl start ospf6d
# modprobe l2tp_eth
# ip l2tp add tunnel tunnel_id 5555 peer_tunnel_id 5555 udp_sport 5555 udp_dport 5555 encap udp
remote 100.78.18.43 local 100.78.28.127
# ip l2tp add session name eoip0000 tunnel_id 5555 session_id 5555 peer_session_id 5555
:
# vtysh
# conf t
# interface lo
# ipv6 address fd50:d026:9ade:99::99/64
# router ospf6
# router-id 10.0.0.99
# redistribute connected
# area 0.0.0.0 range ::/0
# interface eoip0000 area 0.0.0.0
# interface eoip0001 area 0.0.0.0

6. Web Configuration (CentOS7)
$ sudo su
# yum install -y quagga iptables-services net-tools traceroute tcpdump
# echo "net.ipv6.conf.all.forwarding = 1" > /etc/sysctl.conf
# cp -p /etc/quagga/zebra.conf /etc/quagga/ospf6d.conf
# setsebool -P zebra_write_config 1
# systemctl mask firewalld ; systemctl disable ip6tables
# systemctl enable ospf6d ; systemctl start ospf6d
# modprobe l2tp_eth
# ip l2tp add tunnel tunnel_id 5555 peer_tunnel_id 5555 udp_sport 5555 udp_dport 5555 encap udp
local 100.78.18.43 remote 100.78.28.127
# ip l2tp add session name eoip0000 tunnel_id 5555 session_id 5555 peer_session_id 5555
# vtysh
# conf t
# router ospf6
# router-id 10.0.0.1
# area 0.0.0.0 range ::/0
# interface eoip0000 area 0.0.0.0
# end
# wri

7. OSPFv3 Interval Adjustment
# vtysh
# conf t
# int eoip0000
# ipv6 ospf6 hello-interval 1
# ipv6 ospf6 retransmit-interval 2
# ipv6 ospf6 dead-interval 3
# int eoip0001
# ipv6 ospf6 hello-interval 1
# ipv6 ospf6 retransmit-interval 2
# ipv6 ospf6 dead-interval 3
:
# end
# wri
OSPFv3 Interval Adjustment

8. Thanks for your interset.
SAKURA Internet Research Center.