GTP-U Service Configuration Mode Commands

GTP-U Service Configuration Mode Commands
 
 
The GTP-U Service Configuration Mode is used to manage parameters applied to incoming GTP-U packets.
 
 
bind
Configures the IP address to use for GTP-U data packets.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
[ no ] bind { ipv4-address ipv4_address [ crypto-template crypto_template ] [ ike-bind-address { ipv4_address } ] [ ipv6-address ipv6_address ] | ipv6-address ipv6_address [ crypto-template crypto_template ] [ ike-bind-address { ipv6_address } ] [ ipv4-address ipv4_address ] }
no
removes a configured IP address from this service.
ipv4-address ipv4_address
Binds this service to the IPv4 address of a configured interface.
ipv4_address must be entered as a standard IPv4 address in dotted decimal notation.
ipv6-address ipv6_address
Binds this service to the IPv6 address of a configured interface.
ipv6_address must be entered as a standard IPv6 address in colon-separated notation.
crypto-template crypto_template
Configures crypto template for IPSec, which enables IPSec tunneling for this GTP-U address. Must be followed by the name of an existing crypto template.
crypto_template must be from 1 to 127 alpha and/or numeric characters.
ike-bind-address ip_address
Configures an IKE bind address. Must be followed by IPv4 or IPv6 address; IP address type must be the same as the GTP-U address type.
ipv4_address must be entered as a standard IPv4 address in dotted decimal notation.
ipv6_address must be entered as a standard IPv6 address in colon-separated notation.
note_smallImportant: This keyword is only applicable if a crypto template is bound to the GTP-U address.
Usage
Use this command to bind the service to an interface for sending/receiving GTP-U packets.
note_smallImportant: A GTP-U service can support a maximum of 12 GTP-U endpoints/interfaces.
Example
The following command configures the IPv4 address for this GTP-U service as 1.2.3.4:
bind ipv4-address 1.2.3.4
 
echo-interval
Configures the rate at which GPRS Tunneling Protocol (GTP) v1-U echo packets are sent.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
echo-interval seconds
[ default | no ] echo-interval
seconds
Specifies the number of seconds between the sending of a GTP-Uv1 echo packet. seconds must be an integer value from 60 to 3600.
default
Returns the command to its default setting of disabled.
no
Removes the configured echo-interval setting.
Usage
Use this command to configure the rate at which GTP-Uv1 echo packets are sent.
Example
The following command sets the rate between the sending of echo packets at 120 seconds:
echo-interval 120
 
end
Exits the current mode and returns to the Exec Mode.
Product
All
Privilege
Administrator
Syntax
end
Usage
Change the mode back to the Exec mode.
 
exit
Exits the current mode and returns to the previous mode.
Product
All
Privilege
Administrator
Syntax
exit
Usage
Return to the previous mode.
 
extension-header
Configures the addition of an extension header in the GTP-U packet header, allowing for error indication messages.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
[ default | no ] extension-header source-udp-port
default
Returns the command to its default setting of disabled.
no
Disables the feature.
source-udp-port
Configures extension header type UDP Port support in GTP-U header for GTP-U Error Indication messages.
Usage
Use this command to configure the addition of an extension header in the GTP-U packet to allow for error indication messages
Example
The following command enables the inclusion of an extension header to allow for error indication messages:
extension-header source-udp-port
 
ipsec-allow-error-ind-in-clear
Configures whether error-indication is dropped or sent without IPSec tunnel.
Product
S-GW
Privilege
Administrator
Syntax
[ default | no ] ipsec-allow-error-ind-in-clear
default
Error-indication is dropped if no IPSEC tunnel is present for that peer.
no
Disables the feature.
Usage
Use this command to determine whether error-indication is dropped or sent without IPSec tunnel.
On receiving data packets for a session that doesn’t exist, error-indication needs to be sent back to the peer. If there is no IPSec tunnel present with that peer, error-indication may be either dropped or sent without any IPSec tunnel.
Example
The following command allows error-indication to be sent without any IPSec tunnel:
ipsec-allow-error-ind-in-clear
 
ipsec-tunnel-idle-timeout
Configures the IPSec tunnel idle timeout after which IPSec tunnel deletion is triggered.
Product
S-GW
Privilege
Administrator
Syntax
ipsec-tunnel-idle-timeout seconds
default ipsec-tunnel-idle-timeout
seconds
Default: 60
Specifies the number of seconds an IPSec tunnel is idle before tunnel deletion is triggered. seconds must be an integer value between 10 and 600.
default
Returns the command to its default setting of 60.
Usage
When there are no bearers on a particular IPSec tunnel, GTPUMGR initiates the delete for that tunnel. This timer helps to avoid unnecessary IPSec tunnel deletions for an idle tunnel.
Example
The following command sets the IPsec tunnel idle timeout to 100 seconds
ipsec-tunnel-idle-timeout 100
 
max-retransmissions
Configures the maximum retry limit for GTP-U echo retransmissions.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
max-retransmissions num
no max-retransmissions
num
Default: 4
Specifies the number of GTP-U echo message retransmissions allowed before triggering a path failure error condition. num must be an integer value from 0 to 15.
no
Disables the feature.
Usage
Use this command to set the maximum number of GTP-U echo message retransmissions in order to define a limit that triggers a path failure error.
Example
The following command sets the maximum GTP-U echo message retransmissions for this service to 10:
max-retransmissions 10
 
path-failure detection-policy
Configures a path failure detection policy on GTP-U echo messages that have been retransmitted the maximum number of retry times.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
path-failure detection-policy gtp echo
[ default | no ] path-failure detection-policy
gtp echo
Sets the detection policy to detect a failure upon reaching the maximum number of GTP-U echo message retransmissions.
default
Resets the command to its default setting of enabled.
no
Disables the feature.
Usage
Use this command to set the detection policy for path failures.
Example
The following command sets the path failure detection policy to detect failures upon reaching the maximum number of GTP-U echo message retries:
path-failure detection-policy gtp echo
 
retransmission-timeout
Configures retransmission timeout for GTPU echo message retransmissions for this service.
Product
GGSN, P-GW, S-GW
Privilege
Administrator
Syntax
retransmission-timeout seconds
default retransmission-timeout
seconds
Default: 5
Specifies the number of seconds between the re-sending of GTP-U echo messages. seconds must be an integer value between 1 and 20.
default
Returns the command to its default setting of 5.
Usage
Use this command to set the number of seconds between the retransmission of GTP-U echo messages.
Example
The following command sets the number of seconds between the sending of GTP-U echo messages to 7:
retransmission-timeout 7
 
 
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