Nortel Optical Multiservice Edge 6130 Planning Manual page 206

10-20 Appendix A: Data communications planning
Figure 10-2
IP Packet Routing
Generic GRE implementation rules
You must observe the following rules when you implement auto or static GRE:
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•
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Static GRE implementation rules
You must observe the following rules when you implement static GRE:
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Optical Multiservice Edge 6130
OME6130 supports presentation of both auto and static GRE interfaces to
IP layer protocol. The auto GRE interface presented to the IP protocol
layer is called agre0. The static GRE interface presented to the IP protocol
layer is called sgre1.
OME6130 supports presentation of both auto and static GRE interfaces to
CLNP protocol layer.
The MTU of the GRE network interface presented to the IP must be 446
bytes. The MTU presented to CLNP must be 512 bytes. This is valid for
both auto and static GRE interfaces.
Provision the Remote Manual Area address of the tunnel destination.
The tunnel can be either in the same or remote OSI area. The default is
0x490000.
Provision the Remote System ID of the tunnel destination node. The MAC
address of the tunnel destination node can be used as the Remote System
ID. When the MAC address is entered for static GRE provisioning, remove
the colon characters. The default is 0x000000000000.
NT6Q92MA Rel 1.0 Iss 1 Standard September 2006