IPv6 Server: Router Advertisement Daemon (radvd) - Revision history

Onnowpurbo: /* 22.4.2. Debugging */

2013-07-19T01:56:20Z

22.4.2. Debugging

← Older revision		Revision as of 01:56, 19 July 2013
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	Route ini perlu di ganti setiap kali prefix berubah, yaitu sesudah address IPv4 baru di berikan di interface dial-up.		Route ini perlu di ganti setiap kali prefix berubah, yaitu sesudah address IPv4 baru di berikan di interface dial-up.

	==~~22.4.2.~~ Debugging==		==Debugging==

	A program ~~called~~ “radvdump” ~~can help you looking into sent or received advertisements~~. ~~Simple to use~~:		Sebuah program bernama “radvdump” dapat menolong kita untuk melihat advertisement yang dikirim atau di terima. Cara penggunaan yang sederhananya adalah sebagai berikut:

			# radvdump

	~~# radvdump~~
	Router advertisement from fe80::280:c8ff:feb9:cef9 (hoplimit 255)		Router advertisement from fe80::280:c8ff:feb9:cef9 (hoplimit 255)
	AdvCurHopLimit: 64		AdvCurHopLimit: 64
Line 100:		Line 101:
	AdvSourceLLAddress: 00 80 12 34 56 78		AdvSourceLLAddress: 00 80 12 34 56 78

	Output ~~shows you each~~ advertisement ~~package in readable~~ format. ~~You should see your configured values here again~~, ~~if not, perhaps it's not your~~ radvd ~~which sends the advertisement..~~.~~look for another~~ router ~~on the~~ link ~~(and take the~~ LLAddress, ~~which is the~~ MAC address ~~for tracing)~~.		Output menunjukan setiap paket advertisement dalam format yang dapat kita baca. Kita akan melihat nilai yang dikonfigurasi disini. Jika tidak, maka kemungkinan advertisement yang dikirim bukan dari radvd kita. Lihat router yang lain yang ada di link; catat LLAddress, yang merupakan MAC address untuk penelusuran.

Onnowpurbo: /* Konfigurasi khusus 6to4 */

2013-07-19T01:38:28Z

Konfigurasi khusus 6to4

← Older revision		Revision as of 01:38, 19 July 2013
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	};		};

	~~This results on~~ client ~~side in~~ (~~assuming~~, ppp0 ~~has currently~~ 1.2.3.4 ~~as local IPv4 address~~):		Contoh hasil di sisi client (asumsinya, ppp0 memperoleh IPv4 address 1.2.3.4):

	# /sbin/ip -6 addr show eth0		# /sbin/ip -6 addr show eth0
Line 66:		Line 66:
	inet6 fe80::2e0:12ff:fe34:1234/10 scope link		inet6 fe80::2e0:12ff:fe34:1234/10 scope link

	~~Because a small~~ lifetime ~~was defined~~, ~~such~~ prefix ~~will be thrown away quickly~~, ~~if no related~~ advertisement ~~was received~~.		Karena lifetime yang pendek, maka prefix tersebut akan cepat dibuang, jika tidak ada advertisement yang di terima.

	~~Additional note~~: ~~if you do not used special~~ 6to4 ~~support in initscripts~~, ~~you have to setup a special~~ route ~~on the~~ internal interface ~~on the~~ router, ~~otherwise you will get some~~ backrouting ~~problems~~. ~~for the example showh here~~:		Catatan tambahan: jika kita tidak menggunakan initscript khusus untuk mendukung 6to4, kita harus mensetup route spesial di internal interface di router, jika tidak kita akan terkena masalah backrouting. Contoh route spesial tersebut adalah sebagai berikut:

	# /sbin/ip -6 route add 2002:0102:0304:f101::/64 dev eth0 metric 1		# /sbin/ip -6 route add 2002:0102:0304:f101::/64 dev eth0 metric 1

	~~This route needs to be replaced every time the~~ prefix ~~changes~~, ~~which is the case after a new~~ IPv4 ~~address was assigned to the~~ dial-up ~~interface~~.		Route ini perlu di ganti setiap kali prefix berubah, yaitu sesudah address IPv4 baru di berikan di interface dial-up.

	==22.4.2. Debugging==		==22.4.2. Debugging==

Onnowpurbo: /* Konfigurasi khusus 6to4 */

2013-07-19T01:20:05Z

Konfigurasi khusus 6to4

← Older revision		Revision as of 01:20, 19 July 2013
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	Sejak versi 0.6.2pl3 mendukung re-generasi automatis dari prefix tergantung dari IPv4 yang digunakan di interface. Ini dapat digunakan untuk distribusi advertisement di LAN setelah tunnel 6to4 berubah. Umumnya digunakan di belakang router Linux dial-on-demand. Karena prefix demikian mempunyai lifetime yang lebih pendek (setelah setiap dial-up, prefix lain yang valid), maka lifetime harus dikonfigurasi ke nilai yang minimal:		Sejak versi 0.6.2pl3 mendukung re-generasi automatis dari prefix tergantung dari IPv4 yang digunakan di interface. Ini dapat digunakan untuk distribusi advertisement di LAN setelah tunnel 6to4 berubah. Umumnya digunakan di belakang router Linux dial-on-demand. Karena prefix demikian mempunyai lifetime yang lebih pendek (setelah setiap dial-up, prefix lain yang valid), maka lifetime harus dikonfigurasi ke nilai yang minimal:


	interface eth0 {		interface eth0 {

Onnowpurbo: /* Konfigurasi khusus 6to4 */

2013-07-19T01:19:54Z

Konfigurasi khusus 6to4

← Older revision		Revision as of 01:19, 19 July 2013
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	===Konfigurasi khusus 6to4===		===Konfigurasi khusus 6to4===

	~~Version since~~ 0.6.2pl3 ~~support the automatic (~~re)-~~generation of the~~ prefix ~~depending on an~~ IPv4 ~~address of a specified~~ interface. ~~This can be used to distribute advertisements in a~~ LAN ~~after the~~ 6to4 ~~tunneling has changed~~. ~~Mostly used behind a dynamic~~ dial-on-demand ~~Linux router~~. ~~Because of the sure shorter~~ lifetime ~~of such prefix~~ (~~after each~~ dial-up, ~~another~~ prefix is valid), ~~the~~ lifetime ~~configured to~~ minimal ~~values~~:		Sejak versi 0.6.2pl3 mendukung re-generasi automatis dari prefix tergantung dari IPv4 yang digunakan di interface. Ini dapat digunakan untuk distribusi advertisement di LAN setelah tunnel 6to4 berubah. Umumnya digunakan di belakang router Linux dial-on-demand. Karena prefix demikian mempunyai lifetime yang lebih pendek (setelah setiap dial-up, prefix lain yang valid), maka lifetime harus dikonfigurasi ke nilai yang minimal:


	interface eth0 {		interface eth0 {

Onnowpurbo at 01:04, 19 July 2013

2013-07-19T01:04:10Z

← Older revision		Revision as of 01:04, 19 July 2013
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	* Prefix (needed)		* Prefix (needed)
	* Lifetime ~~of the~~ prefix		* Lifetime dari prefix
	* ~~Frequency of sending advertisements~~ (optional)		* Banyaknya pengiriman advertisement (optional)

	~~After a proper configuration~~, ~~the~~ daemon ~~sends advertisements through specified interfaces and clients are hopefully receive them and auto~~-~~magically configure addresses with received~~ prefix ~~and the~~ default ~~route~~.		Sesudah di konfigurasi dengan benar, daemon akan mengirimkan advertisement melalui interface yang di tentukan dan client "semoga" menerima-nya dan mengkonfigurasi adddress secara automatis dengan prefix yang di terima dan route default.


	==~~2.4.1. Configuring~~ radvd==		==Konfigurasi radvd==

	===~~22.4.1.1. Simple configuration~~===		===Konfigurasi Sederhana===

	Radvd~~'s config file is normally~~ /etc/radvd.conf. ~~An simple example looks like following~~:		File konfigurasi Radvd biasa /etc/radvd.conf. Contoh sederhana sekali adalah sebagai berikut:

	interface eth0 {		interface eth0 {
Line 27:		Line 27:
	};		};

	~~This results on~~ client ~~side in~~		Hasil yang akan di peroleh di sisi client adalah:

	# ip -6 addr show eth0		# ip -6 addr show eth0
Line 36:		Line 36:
	inet6 fe80::2e0:12ff:fe34:1234/10 scope link		inet6 fe80::2e0:12ff:fe34:1234/10 scope link

	~~Because no~~ lifetime ~~was defined~~, ~~a very high value was used~~.		Jika tidak ada lifetime yang di definisikan, maka nilai yang sangat tinggi yang akan di gunakan.

	===~~22.4.1.2. Special~~ 6to4 ~~configuration~~===
			===Konfigurasi khusus 6to4===

	Version since 0.6.2pl3 support the automatic (re)-generation of the prefix depending on an IPv4 address of a specified interface. This can be used to distribute advertisements in a LAN after the 6to4 tunneling has changed. Mostly used behind a dynamic dial-on-demand Linux router. Because of the sure shorter lifetime of such prefix (after each dial-up, another prefix is valid), the lifetime configured to minimal values:		Version since 0.6.2pl3 support the automatic (re)-generation of the prefix depending on an IPv4 address of a specified interface. This can be used to distribute advertisements in a LAN after the 6to4 tunneling has changed. Mostly used behind a dynamic dial-on-demand Linux router. Because of the sure shorter lifetime of such prefix (after each dial-up, another prefix is valid), the lifetime configured to minimal values:

Onnowpurbo at 09:22, 17 July 2013

2013-07-17T09:22:08Z

← Older revision		Revision as of 09:22, 17 July 2013
Line 1:		Line 1:
	22.4. ~~Router Advertisement Daemon (radvd)~~		Daemon router advertisement sangat bermanfaat di LAN, terutama jika client yang ada bisa di konfigurasi secara automatis. Daemon itu sendiri harus di jalankan di router Linux yang merupakan default gateway IPv6. Perlu di catat bahwa belum tentu gateway IPv6 adalah gateway IPv4 juga.

	~~The router~~ advertisement ~~daemon is very useful on a LAN, if clients should be auto-configured~~. ~~The daemon itself should run on the Linux default IPv6 gateway router (it's not required that this is also the default IPv4 gateway, so pay attention who on your LAN is sending router advertisements).~~		Kita dapat menentukan beberapa informasi dan flag yang harus di bawa di advertisement. Yang banyak digunakan adalah:

	~~You can specify some information and flags which should be contained in the advertisement. Common used are~~

	* Prefix (needed)		* Prefix (needed)

Onnowpurbo at 06:56, 27 June 2013

2013-06-27T06:56:07Z

Show changes

Onnowpurbo: New page: 22.4. Router Advertisement Daemon (radvd) The router advertisement daemon is very useful on a LAN, if clients should be auto-configured. The daemon itself should run on the Linux default ...

2013-05-23T00:04:53Z

New page: 22.4. Router Advertisement Daemon (radvd) The router advertisement daemon is very useful on a LAN, if clients should be auto-configured. The daemon itself should run on the Linux default ...

New page

22.4. Router Advertisement Daemon (radvd)

The router advertisement daemon is very useful on a LAN, if clients should be auto-configured. The daemon itself should run on the Linux default IPv6 gateway router (it's not required that this is also the default IPv4 gateway, so pay attention who on your LAN is sending router advertisements).

You can specify some information and flags which should be contained in the advertisement. Common used are

Prefix (needed)

Lifetime of the prefix

Frequency of sending advertisements (optional)

After a proper configuration, the daemon sends advertisements through specified interfaces and clients are hopefully receive them and auto-magically configure addresses with received prefix and the default route.
22.4.1. Configuring radvd
22.4.1.1. Simple configuration

Radvd's config file is normally /etc/radvd.conf. An simple example looks like following:

interface eth0 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
prefix 2001:0db8:0100:f101::/64 {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
};

This results on client side in

# ip -6 addr show eth0
3: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
inet6 2001:0db8:100:f101:2e0:12ff:fe34:1234/64 scope global dynamic
valid_lft 2591992sec preferred_lft 604792sec
inet6 fe80::2e0:12ff:fe34:1234/10 scope link

Because no lifetime was defined, a very high value was used.
22.4.1.2. Special 6to4 configuration

Version since 0.6.2pl3 support the automatic (re)-generation of the prefix depending on an IPv4 address of a specified interface. This can be used to distribute advertisements in a LAN after the 6to4 tunneling has changed. Mostly used behind a dynamic dial-on-demand Linux router. Because of the sure shorter lifetime of such prefix (after each dial-up, another prefix is valid), the lifetime configured to minimal values:

interface eth0 {
AdvSendAdvert on;
MinRtrAdvInterval 3;
MaxRtrAdvInterval 10;
prefix 0:0:0:f101::/64 {
AdvOnLink off;
AdvAutonomous on;
AdvRouterAddr on;
Base6to4Interface ppp0;
AdvPreferredLifetime 20;
AdvValidLifetime 30;
};
};

This results on client side in (assuming, ppp0 has currently 1.2.3.4 as local IPv4 address):

# /sbin/ip -6 addr show eth0
3: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
inet6 2002:0102:0304:f101:2e0:12ff:fe34:1234/64 scope global dynamic
valid_lft 22sec preferred_lft 12sec
inet6 fe80::2e0:12ff:fe34:1234/10 scope link

Because a small lifetime was defined, such prefix will be thrown away quickly, if no related advertisement was received.

Additional note: if you do not used special 6to4 support in initscripts, you have to setup a special route on the internal interface on the router, otherwise you will get some backrouting problems. for the example showh here:

# /sbin/ip -6 route add 2002:0102:0304:f101::/64 dev eth0 metric 1

This route needs to be replaced every time the prefix changes, which is the case after a new IPv4 address was assigned to the dial-up interface.
22.4.2. Debugging

A program called “radvdump” can help you looking into sent or received advertisements. Simple to use:

# radvdump
Router advertisement from fe80::280:c8ff:feb9:cef9 (hoplimit 255)
AdvCurHopLimit: 64
AdvManagedFlag: off
AdvOtherConfigFlag: off
AdvHomeAgentFlag: off
AdvReachableTime: 0
AdvRetransTimer: 0
Prefix 2002:0102:0304:f101::/64
AdvValidLifetime: 30
AdvPreferredLifetime: 20
AdvOnLink: off
AdvAutonomous: on
AdvRouterAddr: on
Prefix 2001:0db8:100:f101::/64
AdvValidLifetime: 2592000
AdvPreferredLifetime: 604800
AdvOnLink: on
AdvAutonomous: on
AdvRouterAddr: on
AdvSourceLLAddress: 00 80 12 34 56 78

Output shows you each advertisement package in readable format. You should see your configured values here again, if not, perhaps it's not your radvd which sends the advertisement...look for another router on the link (and take the LLAddress, which is the MAC address for tracing).