3.34. GTPTunnel

Description

A GTP interface combines two different protocols: GTP Control Plane (GTP-C) and GTP Data Transfer (GTP-U), and will act as a Serving GPRS Support Node (SGSN).

Properties

Name
Name of this interface. (Identifier)
StitchInterface
Specifies the IPsec tunnel that this GTP tunnel is stitched to. (Optional)
LocalEndpoint
Specifies the outer IP address of the GTP interface. (Optional)
OuterRoutingTable
The outer Routing Table to use for the GTP-C and GTP-U traffic. (Default: main)
EndUserDNS
End User DNS that clients will use. (Optional)
FakeDHCPServer
Address to use in DHCPINFORM Responses.
ChargingCharacteristics
A set of vendor specified flags. (Optional)
OverrideGGSNEUDNS
Override any End User DNS information received from GGSN. (Default: No)
RoundRobinDNS
Use Round robin between hosts when DNS name contains multiple hosts. (Default: No)
InterceptDHCPInform
Intercept DHCPINFORM messages from clients that request P-CSCF information. (Default: No)
SeqNumCheck
Sequence Number Checking on user data packets. (Default: No)
ShortAPNDNS
Use only the first label in the APN for DNS resolving the GGSN's IP-addresses. (Default: No)
ShortAPNGGSN
Send only the first label in the APN to the GGSN. (Default: No)
SendRATType
Send the RAT-Type information element. (Default: Yes)
UsePreferredIP
Negotiate End User Address using IP address proposed by client. (Default: No)
MaxRetransmits
Maximum number of resends for a message before the system considers the link down. (Default: 30)
RetransmitInterval
Seconds between resending non-acknowledged messages. (Default: 2)
PathCheckInterval
Seconds between path checks. (Default: 60)
FailedTimeout
Seconds a failed GGSN connection is kept in memory. (Default: 0)
TunnelLimit
Maximum allowed GTP Tunnels. (Default: 100000)
MaxSeqDistance
Maximum allowed distance a sequence number can be from expected without being dropped. (Default: 5)
RecSeqSet
Number of previous accepted sequence numbers to compare against for validation. (Default: 6)
ResolveAPNInterval
Seconds between new resolve for an APN. (Default: 300)
SelectionMode
Selection mode indicates the origin of the APN. (Default: MSNotVerfied)
RATType
RAT type sent to GGSN on when establishing a tunnel. (Default: WLAN)
AllocRetPrio
Allocation/Retention Priority field of QoS sent to GGSN. (Default: Low)
TrafficClass
Traffic class. (Default: Subscribed)
TrafficHandlingPriority
Traffic handling priority. (Default: Subscribed)
MaxSDUSize
Maximum SDU size, with a granularity of ten bytes. (Default: 1500)
MaxBitRateUplink
Maximum bitrate uplink in kbps. (Default: 8640)
MaxBitRateDownlink
Maximum bitrate downlink in kbps. (Default: 16000)
DelayClass
Delay class. (Default: 4)
ReliabilityClass
Reliability class. (Default: 3)
PeakThroughput
Peak throughput. (Default: 1)
PrecedenceClass
Precedence class. (Default: 3)
MeanThroughput
Mean throughput. (Default: 0)
DeliveryErroneousSDU
Delivery of erroneous SDU. (Default: 3)
ResidualBER
Residual bit error rate (BER). (Default: 8)
SDUErrorRatio
SDU error ratio. (Default: 4)
TransferDelay
Transfer delay. (Default: 0)
GuaranteedBitRateUplink
Guaranteed bit rate uplink in kbps. (Default: 0)
GuaranteedBitRateDownlink
Guaranteed bit rate downlink in kbps. (Default: 0)
SignalingIndication
Signaling indication. (Default: 0)
SourceStatisticsDescriptor
Source statistics descriptor. (Default: 0)
DeliveryOrder
Enable Delivery order. (Default: No)
AutoInterfaceNetworkRoute
Automatically add a route for this interface using the given remote network. (Default: Yes)
UpdatePDPContextResp
Specifies how to respond to Update PDP Context Requests from a GGSN. (Default: ServiceNotSupported)
EndMarkerSupport
Enable support for End Marker messages. (Default: No)
CopyDSCP
Copy the DSCP (Differentiated Services Codepoint) value from the inner to the outer IP header of GTP-U messages. (Default: No)
HASyncInterval
The number of packets received or sent between sequence number synchronization for GTP-U. A value of 0 will cause a synchronization every 2*MaxSeqDistance. (Default: 0)
DSCP
Specifies the DSCP (Differentiated Services Codepoint) value to set in the outer IP header. This value is ignored if copying is enabled. (Default: 0)
UDPChksum
Specifies how to handle GTP-U UDP checksum. (Default: Ignore)
MTU
Specifies the size (in bytes) of the largest packet that can be forwarded. (Default: 1500)
IPAddress
The interface's IP addresses. (Default: 0)
IP4Broadcast
The interface's IPv4 broadcast address. (Optional)
RoutingTableMembership
Interface's routing table membership. (Default: <all>)
SecurityEquivalentInterfaces
Security and transport equivalent interfaces. (Optional)
Zone
Specifies the zone that this interface is a member of. (Optional)
Comments
Text describing the current object. (Optional)