## 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 template {
  label="bfd-topo2";

  # Routers
  r1 [
    shape=doubleoctagon,
    label="r1",
    fillcolor="#f08080",
    style=filled,
  ];
  r2 [
    shape=doubleoctagon
    label="r2",
    fillcolor="#f08080",
    style=filled,
  ];
  r3 [
    shape=doubleoctagon
    label="r3",
    fillcolor="#f08080",
    style=filled,
  ];
  r4 [
    shape=doubleoctagon
    label="r4",
    fillcolor="#f08080",
    style=filled,
  ];

  # Switches
  sw1 [
    shape=oval,
    label="sw1\n2001:db8:1::/64",
    fillcolor="#d0e0d0",
    style=filled,
  ];
  sw2 [
    shape=oval,
    label="sw2\n10.0.3.0/24",
    fillcolor="#d0e0d0",
    style=filled,
  ];
  sw3 [
    shape=oval,
    label="sw3\n2001:db8:4::/64",
    fillcolor="#d0e0d0",
    style=filled,
  ];

  # Connections
  r1 -- sw1 [label="eth0"];
  r2 -- sw1 [label="eth0"];

  r2 -- sw2 [label="eth1"];
  r3 -- sw2 [label="eth0"];

  r2 -- sw3 [label="eth2"];
  r4 -- sw3 [label="eth0"];
}