I am trying to set up a GRE tunnel between two linux routers. The routers have a 400 MHz Processor.
Linux .2 65.0.0.2 Linux
LAN1 -------- Router -------- INTERNET ---- Router ---- LAN2
10.10.10.0 .1 208.1.0.1 (Simulated) .1 .1 192.168.2.0/24
/24
Scripts to Create the tunnel
ip tunnel add tun0 mode gre remote 65.0.0.1 local 208.1.0.1 dev eth1 ttl 255
ip addr add 192.18.0.1 dev tun0
ip route add 192.18.0.2 dev tun0
ip route add 192.168.2.0/24 dev tun0
I change the remote and local ip and setup the tunnel ad the other end.
The tunnel is up and i am able to send data through the tunnel. But its very slow. Without the tunnels i could send 50Mbps and with the tunnels its aroud 1-2 Mbps.
--- Kernel Config --- --
CONFIG_NETFILTER=y
# CONFIG_NETFILTER_DEBUG is not set
# CONFIG_FILTER is not set
CONFIG_UNIX=y
CONFIG_INET=y
CONFIG_IP_MULTICAST=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_IP_ROUTE_FWMARK=y
CONFIG_IP_ROUTE_NAT=y
CONFIG_IP_ROUTE_MULTIPATH=y
CONFIG_IP_ROUTE_MULTIPATH_SEQUENTIAL=y
CONFIG_IP_ROUTE_TOS=y
# CONFIG_IP_ROUTE_VERBOSE is not set
# CONFIG_IP_PNP is not set
# CONFIG_NET_ARP_LIMIT is not set
# CONFIG_NET_IPIP is not set
CONFIG_NET_IPGRE=y
# CONFIG_NET_IPGRE_BROADCAST is not set
# CONFIG_IP_MROUTE is not set
# CONFIG_ARPD is not set
------------------------------------------------------
Any ideas to tune up the tunnel performance would be greatly Appreciated.
Thanks,
Kavitha
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