MPLS Topology 1.1

There was a big error in the topology I put up yesterday. Even though it looked like ldp was running, the actual ldp neighbour relationships were not up. This is why when I later tested, no customer traffic went across the core.

I’ve now given each of the core routers and the access routers a loopback address in the 10.255.255.0/24 range (Each has a /32 in this range) This is advertised into OSPF. This ensures all routers have a route to all loopbacks. I then forced MPLS to use the loopback address for the ldp neighbour relationship.

Image-wise, it’s the same. Click for the larger image:

MPLS Backbone small MPLS Topology 1.1

This is the.net file contents:

#MPLS 1.0 Topology created by Darren O'Connor 22/02/10
#MPLS 1.1 Topology created by Darren O'Connor 23/02/10
#www.mellowd.co.uk/ccie
#Feel free to use and change as you see fit. However if you do use please leave my details here at the top

[localhost:7200]

workingdir = /data/dynamips/working

[[3640]]
 image = /data/dynamips/IOS_Images/3640/c3640-jk9o3s-mz.124-5a.UNCOMPRESSED.bin
 ram = 128
 disk0 = 0
 disk1 = 0
 mmap = true
 ghostios = true

###########################
#                         #
# Mpls Topology           #
#                         #
###########################

 [[Router CR1]]
  model = 3640
  console = 2001
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  s1/0 = AR1 s1/0
  s1/2 = AR3 s1/2
  Fa0/0 = CR3 Fa0/0
  Fa2/0 = CR2 Fa2/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/CR1.cfg

 [[Router CR2]]
  model = 3640
  console = 2002
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  s1/0 = AR2 s1/0
  s1/2 = AR1 s1/2
  Fa0/0 = CR4 Fa0/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/CR2.cfg

 [[Router CR3]]
  model = 3640
  console = 2003
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  Fa2/0 = CR4 Fa2/0
  s1/0 = AR3 s1/0
  s1/1 = GR1 s1/1
  s1/2 = AR4 s1/2  
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/CR3.cfg

 [[Router CR4]]
  model = 3640
  console = 2004
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  s1/0 = AR4 s1/0
  s1/2 = AR2 s1/2
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/CR4.cfg
 
 [[Router AR1]]
  model = 3640
  console = 2005
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  Fa0/0 = CPE1 Fa0/0
  Fa2/0 = CPE2 Fa0/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/AR1.cfg

 [[Router AR2]]
  model = 3640
  console = 2006
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  Fa0/0 = CPE4 Fa0/0
  Fa2/0 = CPE3 Fa0/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/AR2.cfg

 [[Router AR3]]
  model = 3640
  console = 2007
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  Fa0/0 = CPE5 Fa0/0
  Fa2/0 = CPE6 Fa0/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/AR3.cfg

 [[Router AR4]]
  model = 3640
  console = 2008
  autostart = true
  idlepc = 0x60610428
  slot0 = NM-1FE-TX
  slot1 = NM-4T
  slot2 = NM-1FE-TX
  Fa0/0 = CPE8 Fa0/0
  Fa2/0 = CPE7 Fa0/0
  cnfg = /data/dynamips/Topology/Topology_Config/mpls/AR4.cfg

 [[Router CPE1]]
  model = 3640
  console = 2009
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE2]]
  model = 3640
  console = 2010
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE3]]
  model = 3640
  console = 2011
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE4]]
  model = 3640
  console = 2012
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE5]]
  model = 3640
  console = 2013
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE6]]
  model = 3640
  console = 2014
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX

 [[Router CPE7]]
  model = 3640
  console = 2021
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX


 [[Router CPE8]]
  model = 3640
  console = 2022
  autostart = false
  idlepc = 0x60610428
  slot0 = NM-1FE-TX


 [[Router GR1]]
   model = 3640
   console = 2023
   autostart = true
   idlepc = 0x60610428
   slot0 = NM-1FE-TX
   slot1 = NM-4T
   Fa0/0 = ISP2 Fa0/0
   cnfg = /data/dynamips/Topology/Topology_Config/mpls/GR1.cfg

 [[Router ISP2]]
   model = 3640
   console = 2024
   autostart = true
   idlepc = 0x60610428
   slot0 = NM-1FE-TX
   cnfg = /data/dynamips/Topology/Topology_Config/mpls/ISP2.cfg
And most importantly, this is the updated configuration files:
flattr badge large MPLS Topology 1.1

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