Configuration Hints

Lonap runs a stable Internet Exchange, because there is a set of regulations that prohibit certain types of traffic. The example configurations on this page can be used to configure your peering router interfaces, in order to prevent the prohibited traffic reaching the exchange.  We recommend that you base your configurations on the example on this page.  If you wish to share your configuration for a router that is not described on this page, then please send it to support-at-lonap-dot-net.

It is important to stress that these configurations are sample configurations and you should ensure that the recommendations will fit with your topology.  Changes to router software and new protocols released in time may require these recommendations to alter.

Cisco Router, directly connected to the exchange.

Connecting your router directly to the exchange is the recommended configuration.  This configuration is for members who connect to LONAP and take a 'single VLAN' (access) port.  This is the default port style, and the port you will be assigned unless you specifically ask for a multiple VLAN port.

interface GigabitEthernet x/y
	ip address 193.203.5.x 255.255.255.0
	description PEERING:: Lonap Internet Exchange
	no ip redirects
	no ip proxy-arp
	no cdp enable
	no ip directed-broadcast
	no mop enable
	no keepalive

Cisco Router, connected via intermedia Cisco Switch

This configuration effectively extends the number of ports on your router using 802.1q VLAN trunking. It is not the recommended configuration style, because this method can cause frames to leak from any intermediate switch, towards the exchange.  Should this occur, the exchange will shut down your port in order to protect the health of the internet exchange.

There is a wide variety of switches that can act as intermediate switches.  This configuration assumes your switch runs IOS.  If a command in this sample configuration is not accepted by your switch, you can check to see whether the feature is available on your equipment - if not then there is no need to explicitly disable the configuration.

Intermediate Switch

interface GigabitEthernet x/y
	description Port facing LONAP Internet Exchange
	switchport access vlan 300
	switchport mode access
	switchport nonegotiate
	no keepalive
	no cdp enable
	no lldp receive
	no lldp transmit
	no udld enable
	spanning-tree bpdufilter enable
end

vlan 300
	name LONAP
end

interface GigabitEthernet x/z
	description Port Facing London router xxx
	switchport mode trunk
	switchport trunk allowed vlan 300  

Router terminating BGP Sessions

interface GigabitEthernet x/y
	description Port facing London Switch yyy
	no ip address
interface GigabitEthernet x/y.300
	description PEERING:: LONAP Internet Exchange
	encapsulation dot1q 300
	ip address 193.203.5.x 255.255.255.0
	no ip redirects
	no ip proxy-arp
	no cdp enable
	no ip directed-broadcast
	no mop enable
	no keepalive

Juniper Router connected to exchange

Access Interface

ge-0/0/x {
	unit 0 {
		description "PEERING:: LONAP";
		family inet {
			no-redirects
			address 193.203.5.x/24;
		}
		family inet6 {
			address 2001:7F8:17::xxxx:1/64;
		}
	}
}

	

Tagged Interface

ge-0/0/x {
	vlan-tagging;
	unit 4 {
		description "PEERING:: LONAP";
		vlan-id 4;
		family inet {
			no-redirects
			address 193.203.5.x/24;
		}
		family inet6 {
			address 2001:7F8:17::xxxx:1/64;
		}
	}
}