## Color coding:
#########################
##  Main FRR: #f08080  red
##  Switches: #d0e0d0  gray
##  RIP:      #19e3d9  Cyan
##  RIPng:    #fcb314  dark yellow
##  OSPFv2:   #32b835  Green
##  OSPFv3:   #19e3d9  Cyan
##  ISIS IPv4 #fcb314  dark yellow
##  ISIS IPv6 #9a81ec  purple
##  BGP IPv4  #eee3d3  beige
##  BGP IPv6  #fdff00  yellow
##### Colors (see http://www.color-hex.com/)

graph ospf_topo1 {
	label="ospf topo1";

	# Routers
	r1 [
		label="r1\nrtr-id 10.0.255.1/32",
		shape=doubleoctagon,
		fillcolor="#f08080",
		style=filled,
	];
	r2 [
		label="r2\nrtr-id 10.0.255.2/32",
		shape=doubleoctagon,
		fillcolor="#f08080",
		style=filled,
	];
	r3 [
		label="r3\nrtr-id 10.0.255.3/32",
		shape=doubleoctagon,
		fillcolor="#f08080",
		style=filled,
	];
	r4 [
		label="r4\nrtr-id 10.0.255.4/32",
		shape=doubleoctagon,
		fillcolor="#f08080",
		style=filled,
	];

	# Switches
	s1 [
		label="s1\n10.0.1.0/24\n2001:db8:1::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];
	s2 [
		label="s2\n10.0.2.0/24\n2001:db8:2::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];
	s3 [
		label="s3\n10.0.3.0/24\n2001:db8:3::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];
	s4 [
		label="s4\n10.0.10.0/24\n2001:db8:100::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];
	s5 [
		label="s5\n172.16.0.0/24\n2001:db8:200::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];
	s6 [
		label="s6\n172.16.1.0/24\n2001:db8:300::/64",
		shape=oval,
		fillcolor="#d0e0d0",
		style=filled,
	];

	# Connections
  subgraph cluster0 {
    label="area 0"

	  r1 -- s1 [label="eth0\n.1\n::1"];
	  r1 -- s3 [label="eth1\n.2\n::2"];

	  r2 -- s2 [label="eth0\n.1\n::1"];
	  r2 -- s3 [label="eth1\n.3\n::3"];

	  r3 -- s3 [label="eth0\n.1\n::1"];
	  r3 -- s4 [label="eth1\n.1\n::1"];
  }

  subgraph cluster1 {
    label="area 1"

	  r3 -- s5 [label="eth2\n.2\n::2"];

	  r4 -- s5 [label="eth0\n.1\n::1"];
	  r4 -- s6 [label="eth1\n.100\n::100"];
  }
}