Command Manual – GRE
H3C S9500 Series Routing Switches
Chapter 1 GRE Configuration Commands
1-3
Field
Description
Add tunnel key failed.
Failed to add GRE key option
information into the tunneled packet.
Add tunnel checksum failed.
Failed to add GRE checksum option
information into the tunneled packet.
Adding IPv4 header failed.
Failed to add IPv4 header for the
tunneled packet.
Adding IPv6 header failed.
Failed to add IPv6 header for the
tunneled packet.
The packet version field error.
The version field of the GRE header is
not all 0s. The packet is to be discarded.
Failed to get GRE optional data.
Failed to get the GRE tunnel mode data
according to the tunnel interface index.
Key not equal.
The key values of the two GRE tunnel
ends are not consistent. The GRE
packet is to be discarded.
Can not get tunnel transport protocol.
Failed to get the transport protocol type
according to the tunnel mode.
Encapsulation limit check failed.
Failed in encapsulation limit check of the
tunnel IPv6 packet.
Transmit packet failed.
The GRE packet was not sent because
the tunnel interface failed in sending it.
Table 1-2
Description on the fields of the
debugging gre packet
command
Field
Description
Tunnel
num
packet: Encapsulation
protocol is
pro-type
The encapsulation protocol of interface
Tunnel
num
is
pro-type.
gre packet: Decapsulate tunnel packet
Outer packet header
ip-address1
->
ip-address2
(length =
length
)
Decapsulating a packet. The source and
destination addresses of the packet are
ip-address1
and
ip-address2
respectively
and the packet size is
length.
Tunnel
num
packet: After
decapsulation,
Outgoing packet header
ip-address1
->
ipaddress2
(length =
length
)
On interface Tunnel
num
: After the
decapsulation, the source and destination
addresses in the packet header are
ip-address1
and
ip-address2
respectively
and the packet size is
length
.
Examples
# Enable GRE debugging. Then, ping the destination address of a tunnel to view the
output information.