> 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 using IPv4 dotted-decimal notation.
> ipv6-address ipv6_address
> Binds this service to the IPv6 address of a configured interface.
> ipv6_address must be entered using IPv6 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 an alphanumeric string of 1 through 127 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 using IPv4 dotted-decimal notation.
> ipv6_address must be entered using IPv6 colon-separated notation.
> Important: 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.
> Important: 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 10.2.3.4:
> bind ipv4-address 10.2.3.4
> 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 from 60 through 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 configuration mode and returns to the Exec mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> end
> Usage
> Use this command to return to the Exec mode.
> exit
> Exits the current mode and returns to the parent configuration mode.
> Product
> All
> Privilege
> Security Administrator, Administrator
> Syntax
> exit
> Usage
> Use this command to return to the parent configuration 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 an IPSec tunnel.
> On receiving data packets for a session that does not 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 from 10 through 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 from 0 through 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 from 1 through 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
> sequence-number
> Enables addition of the sequence number to every GTP-U packet. Default is disabled.
> Product
> GGSN, HSGW, P-GW, S-GW
> Privilege
> Administrator
> Syntax
> [ no ] sequence-number
> no
> Disables addition of the sequence number to every GTP-U packet.
> Usage
> Use this command to enable/disable addition of the sequence number to every GTP-U packet coming from Gi interface and going towards Gn/Gp interface. If GTP-U packets are received out of sequence, sequence numbers would allow the packets to be reorded.
> Example
> The following command enables addition of the sequence number to every GTP-U packet:
> sequence-number

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