Gre Key; Gre Sequence-Datagrams - 3Com 3C13618 Command Reference Manual

2.1.4 gre key

Syntax
gre key key-number
undo gre key
View
Tunnel interface view
Parameter
key-number: Key IDs at both ends of the tunnel, ranging from 0 to 4294967295.
Description
Using the gre key command, you can configure the gre key at the tunnel interface.
Using the undo gre key command, you can cancel the gre key.
By default, no gre key is set.
RFC 1701 provides that: if the KEY field in the GRE header is set, then both the
receiver and sender will authenticate the gre key. Only when the gre keys set at both
ends of the tunnel are the same will the authentication succeed, otherwise the packet
will be discarded.
For related commands, see interface tunnel.
Example
# Set up a tunnel between RouterA and RouterB, and the tunnel interfaces are
tunnel0 and tunnel1, respectively. It is required that the gre key be set.
[RouterA] interface tunnel 0
[RouterA-Tunnel0] gre key 123456789
[RouterB] interface tunnel 1
[RouterB-Tunnel1] gre key 123456789

2.1.5 gre sequence-datagrams

Syntax
gre sequence-datagrams
undo gre sequence-datagrams
VPN
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