Dcn Performance; Supported Dcn Design Examples - Nortel Optical Multiservice Edge 6130 Planning Manual

•
•

DCN performance

This section details the guidelines for DCN performance.
•
•
•

Supported DCN design examples

In order to have a complete understanding of the DCN for OME6130 and to
ensure that the DCN has the proper level of resiliency and connectivity for all
the network elements in the configuration, the following needs to be reviewed
while designing the DCN:
•
•
•
— MTU packet size should be 66 bytes less than the MTU for LAPD
Telnet session
— on the number of concurrent sessions per network element
— Session timeout is not supported
TL-1 sessions
— maximum of 4 concurrent sessions per network element
Native IP forwarding capability:
— 400 kbps for typical management messages without OSI interworking
— 320 kbps with IP tunnelling through OSI with GRE
Maximum MS DCC throughput for IP packets is 400 kbps.
DCN Loading:
— Minimum link required for OMEA management is 128 kbps
— Minimum link for Craft only connection is 15kbps under normal
conditions
— Average native IP traffic per NE is 4 kbps
— Average resulting OSI traffic per NE with GRE is 6-8 kbps for the core
DCN
— Maximum number of IP DCC hops is 15
Physical and logical connectivity - Ethernet LAN port, DCC ports, and IP
via OSI tunnels usage and provisioning.
IP network design - IP class, subnets, and IP routing scheme (static or
dynamic OSPF).
Note: For configurations using OSPF routing in the examples below, the
default OSPF area 0.0.0.1 is used. In actual network implementations, the
OSPF area may be changed, along with the other interfaces, to a unique
value.
OSI network design (if applicable) - Area addresses, IS-IS or iIS-IS
routing.
Planning Guide NT6Q92MA Rel 1.0 Iss 1 Standard September 2006
Appendix A: Data communications planning 10-25