ICSR Checkpointing

This appendix lists and describes macro- and micro-checkpoints employed by the Interchassis Session Recovery framework. Checkpoints are exchanged between the active and standby ICSR chassis via the Service Redundancy Protocol (SRP).

The following topics are discussed:

Overview of Checkpointing

Interchassis Session Recovery (ICSR) provides a framework for sessmgr instance-level checkpointing within an ICSR framework. A checkpoint is a snapshot of the status of an application. Checkpointing can be used by sessmgr to push instance level information to the peer chassis.

Instance-level checkpointing sends messages to specific sessmgr instances. Each application, such as GGSN, PDSN, P-GW, S-GW or SGSN, is responsibility for encoding and decoding the checkpoint message. The ICSR framework provides the APIs for transport of the instance-level checkpoint information and associated statistics.

Macro-checkpoints contain full session information and micro-checkpoints contain only a few variables. Macro-checkpoints are sent initially from the active chassis to the standby chassis on power up and reload, and periodically thereafter. When a standby chassis receives macro-checkpoints, it clears any existing CRR (Call Recovery Record) or CLP (Call Line Pointer) related to that session, and creates a new CRR or CLP. Macro-checkpoints are also known as full checkpoints (FCs).

To conserve processing cycles and memory, dynamic and periodic updates from an active chassis to a standby chassis are done using micro-checkpoints.

The output of the Exec mode show srp info command displays a complete list of SRP checkpoints.

Macro-checkpoints

This section lists and briefly describes ICSR macro-checkpoints.

GGSN_APN ID MAPPING

This macro-checkpoint is sent from the active to the standby chassis to map APN names on the standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a TCP connection is established between the sessmgrs and they move to READY_STATE.
  • Accounting: No
  • Delta/Cumulative: N/A
  • Related CLI command: show session subsystem facility sessmgr instance <instance no> debug-info and show srp micro-checkpoint statistics

INSTANCE LEVEL CHECKPOINT

This macro-checkpoint is generated by ECS (Enhanced Charging System) to send new rules to the standby chassis. It is also used by ECS to delete or modify a rule on the standby chassis.

  • Time based: Yes
  • Frequency: 30 minutes
  • Event based: Yes
  • Events: Occurs:
    1. When a new rule is added or deleted on the active chassis.
    2. Every 30 minutes if the ECS is registered for periodic micro-checkpointing.
  • Accounting: —
  • Delta/Cumulative: —
  • Related CLI command: show session subsystem facility sessmgr instance <instance no> debug-info and show srp micro-checkpoint statistics

SERVICE_ID MAPPING

This macro-checkpoint is sent from the active to the standby chassis to map Service IDs on the standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a TCP connection is established between the sessmgrs and they move to READY_STATE.
  • Accounting: No
  • Delta/Cumulative: N/A
  • Related CLI command: show session subsystem facility sessmgr instance <instance no> debug-info

VPNMGR_ID MAPPING

This macro-checkpoint is sent from the active to the standby chassis to map VPNs on the standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a TCP connection is established between the sessmgrs and they move to READY_STATE.
  • Accounting: No
  • Delta/Cumulative: N/A
  • Related CLI command: show session subsystem facility sessmgr instance <instance no> debug-info

Micro-checkpoints

This section lists and briefly describes the characteristics of micro-checkpoints by application category.

Micro-checkpoints are listed in alphabetical order under the following categories:

Uncategorized

SESS_UCHKPT_CMD_INVALIDATE_CRR

This micro-checkpoint is sent to the standby chassis to clear a deleted call. It carries the Call ID and other information that must be deleted on the standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when a call is deleted on the active chassis.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 1
  • Related CLI command: None

SESS_UCKKPT_CMD_UPDATE_CLPSTATS

This micro-checkpoint sends VoLTE data statistics.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs during ICSR background checkpointing. A chassis switchover triggers the sending of VoLTE data stats.
  • Accounting: —
  • Delta/Cumulative: —
  • CMD-ID: 4
  • Related CLI command: None

SESS_UCHKPT_CMD_UPDATE_IDLESECS

This micro-checkpoint sends remaining number of seconds before idle timeout.

  • Time based: Yes
  • Frequency: —
  • Event based: No
  • Events: Occurs during ICSR background checkpointing.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 2
  • Related CLI command: None

DCCA Category

SESS_UCHKPT_CMD_DCCA_SESS_INFO

This micro-checkpoint sends Credit Control (CC) related information.

  • Time based: Yes
  • Frequency: 18 seconds for GR micro-checkpoint
  • Event based: Yes
  • Events: Sent along with the macro-checkpoint/CCA/Assume-positive-state-transitions.
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 19
  • Related CLI command: None

ECS Category

SESS_UCHKPT_CMD_ACS_CALL_INFO

This micro-checkpoint sends critical ECS call level data.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever ECS call level information is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 179
  • Related CLI command: None

SESS_UCHKPT_CMD_ACS_GX_LI_INFO

This micro-checkpoint sources lawful intercept (LI) related information maintained by ECS.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever LI information is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 75
  • Related CLI command: None

SESS_UCHKPT_CMD_ACS_SESS_INFO

This micro-checkpoint sends ECS-level bearer-related data

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever ECS bearer information is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 33
  • Related CLI command: None

SESS_UCHKPT_CMD_DEL_ACS_CALL_INFO

This micro-checkpoint notifies that a Release Call event has occurred.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever an ECS Release Call message is processed.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 188
  • Related CLI command: —

SESS_UCHKPT_CMD_DEL_ACS_SESS_INFO

This micro-checkpoint notifies that a Release Bearer event has occurred.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever an ECS Release Bearer message is processed.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 187
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_CHRG_CA_INFO

This micro-checkpoint sends dynamic charging action information maintained by ECS.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever dynamic charging action information is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 141
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_CHRG_DEL_CA_INFO

This micro-checkpoint notifies that a dynamic charging action has been deleted.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a dynamic charging action has been deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 183
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_CHRG_DEL_QG_INFO

This micro-checkpoint notifies that a dynamic QoS group has been deleted.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a dynamic QoS group has been deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 182
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_CHRG_QG_INFO

This micro-checkpoint sends dynamic QoS group related information maintained by ECS.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever dynamic QoS group information is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 140
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_RULE_DEL_INFO

This micro-checkpoint notifies that a dynamic rule has been deleted.

  • Time based: No
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever a dynamic rule has been deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 178
  • Related CLI command: None

SESS_UCHKPT_CMD_DYNAMIC_RULE_INFO

This micro-checkpoint sources predefined and dynamic rule related information maintained by ECS.

  • Time based: Yes
  • Frequency: —
  • Event based: Yes
  • Events: Occurs whenever a dynamic rule is created or modified.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 43
  • Related CLI command: None

ePDG Category

SESS_UCHKPT_CMD_DELETE_EPDG_BEARER

This micro-checkpoint synchronizes deleted ePDG bearers between the active and standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 110
  • Related CLI command: show srp micro-checkpoint statistics debug-info

SESS_UCHKPT_CMD_UPDATE_EPDG_BEARER

This micro-checkpoint synchronizes ePDG bearers between the active and standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 110
  • Related CLI command: show srp micro-checkpoint statistics debug-info

SESS_UCHKPT_CMD_UPDATE_EPDG_PEER_ADDR

This micro-checkpoint synchronizes ePDG peer addresses between the active and standby chassis.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: —
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 110
  • Related CLI command: show srp micro-checkpoint statistics debug-info

SESS_UCHKPT_CMD_UPDATE_EPDG_REKEY

This micro-checkpoint synchronizes ePDG rekey statistics between the active and standby chassis.

  • Time based: Yes
  • Frequency: 30 seconds
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 110
  • Related CLI command: show srp micro-checkpoint statistics debug-info

SESS_UCHKPT_CMD_UPDATE_EPDG_STATS

This micro-checkpoint synchronizes session statistics between the active and standby chassis.

  • Time based: Yes
  • Frequency: 30 seconds
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 110
  • Related CLI command: show srp micro-checkpoint statistics debug-info

Firewall/ECS Category

SESS_UCHKPT_CMD_SFW_DEL_RULE_INFO

This micro-checkpoint is sent when a ruledef is deleted for a bearer.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever PCRF sends a command to disable the predefined stateful firewall access rules.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 186
  • Related CLI command: None

SESS_UCHKPT_CMD_SFW_RULE_INFO

This micro-checkpoint notifies the addition of dynamically enabled stateful firewall (SFW) access rules.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever PCRF sends a command to enable the predefined SFW access rules.
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 185
  • Related CLI command: None

GGSN Category

SESS_UCHKPT_CMD_GGSN_DELETE_SUB_SESS

This micro-checkpoint sends an update when a secondary bearer is deleted.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs upon secondary bearer deletion
  • Accounting: —
  • Delta/Cumulative: —
  • CMD-ID: 117
  • Related CLI command: None

SESS_UCHKPT_CMD_GGSN_UPDATE_RPR

If RPR (Resilient Packet Ring) is configured in the GGSN service, an RPR timer is started during secondary bearer creation. This checkpoint is sent upon expiry of this timer.

  • Time based: Yes
  • Frequency: RPR timer
  • Event based: Yes
  • Events: Occurs when the secondary bearer creation RPR timer expires.
  • Accounting: —
  • Delta/Cumulative: —
  • CMD-ID: 118
  • Related CLI command: —

SESS_UCHKPT_CMD_GGSN_UPDATE_SESSION

This micro-checkpoint is sent in a Network or UE initiated update procedure except for updates that result in the following scenarios:
  • Creation or deletion of the beare
  • TFT change or inter-RAT handovers
  • Gn-Gp handoff

Parameters associated with this micro-checkpoint are shown below.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs for a network initiated or UE initiated update.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 171
  • Related CLI command: show srp checkpoint statistics active verbose, and show session subsystem facility sessmgr instance <instance_number> debug-info.

SESS_UCHKPT_CMD_GGSN_UPDATE_STATS

This micro-checkpoint periodically sends session statistics.

  • Time based: Yes
  • Frequency: Every five minutes
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 116
  • Related CLI command: None

SESS_UCHKPT_CMD_UPDATE_COA_PARAMS

This micro-checkpoint updates input and output ACL parameters.

  • Time based: —
  • Frequency: —
  • Event based: Yes
  • Events: COA (Change of Authorization) response
  • Accounting: —
  • Delta/Cumulative: —
  • CMD-ID: 83
  • Related CLI command: None

Gx Interface Category

SESS_UCHKPT_CMD_ACS_VOLUME_USAGE

This micro-checkpoint sends volume usage over Gx accounting buckets.

  • Time based: Yes
  • Frequency: 4 seconds for aamgr micro-checkpoint and 18 seconds for GR micro-checkpoint
  • Event based: No
  • Events: Send along with macro-checkpoint
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 79
  • Related CLI command: —None

SESS_UCHKPT_CMD_UPDATE_SGX_INFO

This micro-checkpoint sends Gx session-related information.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered on receiving CCA-I/U or RAR from PCRF.
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 137
  • Related CLI command: None

NAT Category

SESS_UCHKPT_CMD_GR_UPDATE_NAT_REALM_PORT_INFO1

This micro-checkpoint is sent when a port chunk is allocated or deallocated for a subscriber sharing a NAT IP address with other subscribers. The port chunk is allocated or deallocated while data is being received for that subscriber.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when a new NAT port chunk is allocated or deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 105
  • Related CLI command: None

SESS_UCHKPT_CMD_GR_UPDATE_NAT_REALMS

This micro-checkpoint is sent when a NAT IP address is allocated to or deallocated from a subscriber.

For an on-demand case, it is triggered when the first packet matching a particular NAT realm is received and the NAT IP address is allocated to the subscriber.

If this is not an on-demand case, the NAT IP address is allocated during call setup and this micro-checkpoint is sent.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when a NAT IP address is allocated to or deallocated from a subscriber.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 45
  • Related CLI command: None

SESS_UCHKPT_CMD_NAT_SIP_ALG_CALL_INFO

This micro-checkpoint is sent when a new SIP flow is created or deleted for a subscriber (while SIP data is being passed via the subscriber).

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when a new SIP flow is created or deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 98
  • Related CLI command: None

SESS_UCHKPT_CMD_NAT_SIP_ALG_CONTACT_PH_INFO

This micro-checkpoint is sent when a received SIP packet is analyzed and pinholes are created in the NAT firewall.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when a SIP packet creates pinholes in the NAT firewall.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 97
  • Related CLI command: None

SESS_UCHKPT_CMD_UPDATE_DSK_FLOW_CHKPT_INFO

This micro-checkpoint is sent when a new NAT flow is created or deleted for a subscriber (while data is being passed via the subscriber).

This checkpoint is sent from a timer but it is not timer based. The timer is used to pace (10 micro-checkpoints) whenever the timer fires (granularity = 2 sec). This only occurs if there are new flows that need to be micro-checkpointed. Otherwise, no micro-micro-checkpoints are sent.

  • Time based: No
  • Frequency: See explanation above.
  • Event based: Yes
  • Events: Triggered when a new NAT flow is created or deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 96
  • Related CLI command: None

SESS_UCHKPT_CMD_UPDATE_NAT_BYPASS_FLOW_INFO

This micro-checkpoint is sent when NAT is enabled for a subscriber but bypass-nat (no NATing) is configured for this flow (based on a rule-match), and a new bypass flow is created.

This checkpoint is sent when the flow is both added and deleted.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when a new flow with bypass-nat enabled is created or deleted.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 60
  • Related CLI command: None

P-GW Category

SESS_UCHKPT_CMD_PGW_DELETE_SUB_SESS

Reserved for future use.

SESS_UCHKPT_CMD_PGW_OVRCHRG_PRTCTN_INFO

This micro-checkpoint indicates that the S-GW has set the Overcharging Protection bit in the MBR.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when the S-GW sets the Over Charging Protection Bit.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 159
  • Related CLI command: None

SESS_UCHKPT_CMD_PGW_SGWRESTORATION_INFO

This micro-checkpoint indicates the interval that a call will remain up when the S-GW is down.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when the S-GW goes into Restoration mode.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 158
  • Related CLI command: None

SESS_UCHKPT_CMD_PGW_UBR_MBR_INFO

This micro-checkpoint is sent at the end of a UBR (Update Bearer Request ) or MBR (Modify Bearer Request ) except when the UBR /MBR procedure results in the following scenarios:
  • TFT change
  • Bearer updat or modification for a collapsed call
  • Pure P to collapsed or collapsed to Pure P change
  • Inter-technology handoff, for example, WiFi to LTE

Parameters associated with this micro-checkpoint are show below.

  • Time based: No
  • Frequency: N/A
  • Event based: yes
  • Events: Occurs as a result of a UBR or MBR procedure.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 193
  • Related CLI command: show srp checkpoint statistics active verbose and show session subsystem facility sessmgr instance <instance_number> debug-info.

SESS_UCHKPT_CMD_PGW_UPDATE_APN_AMBR

Reserved for future use.

SESS_UCHKPT_CMD_PGW_UPDATE_INFO

Reserved for future use.

SESS_UCHKPT_CMD_PGW_UPDATE_LI_PARAM

This micro-checkpoint indicates the state of Lawful Intercept (LI) for this call.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Triggered when there is a change in the LI state for this call.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 151
  • Related CLI command: None

SESS_UCHKPT_CMD_PGW_UPDATE_PDN_COMMON_PARAM

Reserved for future use.

SESS_UCHKPT_CMD_PGW_UPDATE_QOS

Reserved for future use.

SESS_UCHKPT_CMD_PGW_UPDATE_SGW_CHANGE

Reserved for future use.

SESS_UCHKPT_CMD_PGW_UPDATE_STATS

This micro-checkpoint periodically sends session statistics.

  • Time based: Yes
  • Frequency: Every five minutes
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 65
  • Related CLI command: None

Rf Interface Category

SESS_UCHKPT_CMD_ACS_ACCOUNTING_TYPE_QCI_RF

This micro-checkpoint indicates a change in the SDF+QCI-based Rf accounting buckets.

  • Time based: Yes
  • Frequency: 4 seconds for aamgr checkpoint and 18 seconds for GR checkpoint
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 126
  • Related CLI command: None

SESS_UCHKPT_CMD_ACS_ACCOUNTING_TYPE_QCI_RF_WITH_FC

This micro-checkpoint indicates complete SDF+QCI-based Rf accounting buckets.

  • Time based: Yes
  • Frequency: 4 seconds for aamgr checkpoint and 18 seconds for GR checkpoint
  • Event based: No
  • Events: Sent along with macro-checkpoint.
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 164
  • Related CLI command: None

SESS_UCHKPT_CMD_ACS_ACCOUNTING_TYPE_RATING_GROUP_RF

This micro-checkpoint indicates a change in the SDF-based Rf accounting buckets.

  • Time based: Yes
  • Frequency: 4 seconds for aamgr checkpoint and 18 seconds for GR checkpoint
  • Event based: No
  • Events: N/A
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 125
  • Related CLI command: None

SESS_UCHKPT_CMD_ACS_ACCOUNTING_TYPE_RATING_GROUP_RF_WITH_FC

This micro-checkpoint indicates complete SDF-based Rf accounting buckets.

  • Time based: Yes
  • Frequency: 4 seconds for aamgr checkpoint and 18 seconds for GR checkpoint;
  • Event based: No
  • Events: Sent along with macro-checkpoint.
  • Accounting: Yes
  • Delta/Cumulative: Cumulative
  • CMD-ID: 163
  • Related CLI command: None

S6b Interface Category

SESS_UCHKPT_CMD_S6B_INFO

This micro-checkpoint sends the Restoration Priority Indicator when reauthorization occurs over the S6b interface.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when an Sb6 reauthorization results in a change in value of the Restoration Priority Indicator.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 202
  • Related CLI command: None

SaMOG Category

SESS_UCHKPT_CMD_CGW_DELETE_BEARER

Reserved for future use.

SESS_UCHKPT_CMD_CGW_DELETE_PDN

This micro-checkpoint indicates a PDN connection has been deleted.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever SaMOG sends a Delete-Session-Req or upon receiving a Delete-Bearer-Request.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 169
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_CGW_UPDATE_BEARER_QOS

This micro-checkpoint indicates a QoS update for the bearer.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when a change in Bearer QoS is received from the P-GW due to a reauthorization (AAR Received from AAA Server) or Update-Bearer-Request.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 167
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_CGW_UPDATE_PDN

This micro-checkpoint indicates a PDN update for a change in APN-AMBR.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when a change in APN-AMBR is received from the P-GW due to a reauthorization (AAR Received from AAA Server) or Update-Bearer-Request.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 168
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_CGW_UPDATE_STATS

Reserved for future use.

SESS_UCHKPT_CMD_CGW_UPDATE_UE_PARAM

Reserved for future use.

SESS_UCHKPT_CMD_SAMOG_ACCT_INTERIM_INFO

This micro-checkpoint is sent for a SaMOG session on receipt of an Accounting Req (INTERIM-UPDATE) from the WLC

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs on receipt of an Accounting Req (INTERIM-UPDATE) from the WLC.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 177
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_ACCT_START_INFO

This micro-checkpoint is sent for a SaMOG session on receipt of an Accounting Req (START) from the WLC (Wireless LAN Controller).

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when a Account Req (START) request is received from the WLC.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 174
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_EOGRE_TUNNEL_INFO

This micro-checkpoint is sent for an Inter-RG handoff for EoGRE subscriber sessions. This checkpoint updates the VMAC Address and WLC EoGRE tunnel end-point address.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a DHCP-Discover message is received over a different EoGRE tunnel.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 201
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_GTPV1_UPDATE_PDN_INFO

This micro-checkpoint is sent for a SaMOG session upon receipt of an Update-PDP-Context-Req from the GGSN to update the PDN information.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs after successful SaMOG processing of an Update-PDP-Context-Req from the GGSN.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 191
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_HANDOFF_AUTHEN_INFO

This micro-checkpoint is sent for a SaMOG session that is Re-authenticating the subscriber while the subscriber session is in Handoff state.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs on completion of Re-Authentication for an existing SaMOG subscriber session currently in Handoff state.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 176
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_HANDOFF_INIT_INFO

This micro-checkpoint is sent for a SaMOG session on receipt of an Accounting Req (STOP) from the WLC (Wireless LAN Controller).

SaMOG will delay handoff as it expects an Accounting Req (START) from the subscriber.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs when a Account Req (STOP) request is received from the WLC.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 175
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_LI_PROV_INFO

This micro-checkpoint is sent for a SaMOG session that is on lawful intercept (LI) Active-Camp-on mode.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs after an LI trigger is received after SaMOG session has been created.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 189
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_MIPV6_TIMER_INFO

This micro-checkpoint updates the Binding Cache Life timer and MIPv6 biding status for a SaMOG session.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs whenever a PMIPv6 PBU is received with a lifetime of zero from the WLC.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 190
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_MULTI_ROUND_AUTHEN_INFO

This micro-checkpoint is sent for a SaMOG session when SaMOG is waiting on the UE after sending an Access-Challenge while Re-authenticating the subscriber session.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs after SaMOG sends an Access-Challenge for an existing SaMOG subscriber session during Re-authentication.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 184
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_REAUTHEN_INFO

This micro-checkpoint is sent for a SaMOG session when subscriber Re-authentication is completed.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs on completion of Re-Authentication for an existing SaMOG subscriber session.
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 172
  • Related CLI command: show subscriber samog-only full

SESS_UCHKPT_CMD_SAMOG_REAUTHOR_INFO

This micro-checkpoint is sent for a SaMOG session when subscriber Re-authorization is completed.

  • Time based: No
  • Frequency: N/A
  • Event based: Yes
  • Events: Occurs on receiving and successfully processing AAR from the AAA Server to re-authorize the subscriber
  • Accounting: No
  • Delta/Cumulative: N/A
  • CMD-ID: 173
  • Related CLI command: show subscriber samog-only full