MBNG Jan 2002

1
Some Edge (Bbone) Router requirements

• Connect to the test systems in the IP domain.
• Accept marked packets and be able to re-mark them
• Mark the packets on input according to at least
• Source dest IP address IP port
• Layer3 and Layer4 headers TCP/UDP
• Support Diffserve code points
• Perform policing and admission control
• Provide a range of Queue type options
• Several queues with different priorities
• Real-time queue
• Provide flexible Queue Scheduling
• Weighted round robin
• Weighted fair queuing
• Provide Congestion control such as
• RED
• ECN
• Be able to assign MPLS labels to the packets in a
  flexible manner.

2
MB NG SuperJANET4 Development Network
(Proposed)
Gigabit Ethernet 2.5 Gbit POS Access 2.5 Gbit
POS core MPLS Admin. Domains
RAL/ UKERNA OSM-4GE-WAN-GBIC
Dark Fiber (SSE)
3
MB NG SuperJANET4 Development Network (Minimum)
MAN WS-X6516-GBIC
Gigabit Ethernet 2.5 Gbit POS Access 2.5 Gbit
POS core MPLS Admin. Domains
RAL/ UKERNA OSM-4GE-WAN-GBIC
Dark Fibre (SSE)
4
Some Notes

• RAL/UKERNA provide access to real Grid data e.g.
  BaBar HEP data
• Advantages of the Proposed configuration
• Three MPLS Administrative domains available for
  tests
• Uniformity of blades, interfaces and software
• PXF on the blades provides for more options
  future developments
• MPLS based MANs would use these blades
• Provision for foreseen upgrade of the OSM blades
  should be included
• Background traffic (non-MPLS) can be injected
  via
• 2 Gigabit Ethernet interfaces on the Supervisor
  card
• 4 Gigabit Ethernet interfaces on the OSM POS
  cards
• ECN not yet available on any blades could be
  experimental later
• Traffic on the OSM WAN ports cannot be monitored
  (span) in the router
• Use of external CISCO 3508s
• Traffic on Supervisor ports may be monitored
• Use of header monitor on backplane

5
Equipment for the External / Edge
DomainsConnectivity
Gigabit Ethernet 2.5 Gbit POS 2.5 GbitPOS core
Spy
Load PC
Test PC
Test PC
4 1 Gigabit Ethernet blade MPLS
4 1 Gigabit Ethernet blade QoS Marking MPLS
Test PC
Test PC
Load PC
MPLS to core
2.5 Gbit POS MPLS
Load PC
Supervisor
Supervisor
Load PC
Difserve router OR MPLS Edge Router
MPLS Backbone Router OSR