CISCO-EPC-GATEWAY-MIB
File:
CISCO-EPC-GATEWAY-MIB.mib (42773 bytes)
Imported modules
Imported symbols
Defined Values
ciscoEpcGatewayMIB |
1.3.6.1.4.1.9.9.731 |
This MIB module manages the features and configuration
for PDN Gateway(PGW) and Serving Gateway(SGW) in Evolved
Packet Core(EPC) architecture.
The PGW is the permanent IP point-of-attachment for
access via the E-UTRAN. The PGW performs IP policy and
charging enforcement on packet flows to and from mobile
devices.
The SGW is a local mobility anchor for E-UTRAN mobility,
switching packets between the S5 interface and the GTP
based S1-U interface for mobiles in connected mode.
+------------------------------------------------+
| |
| |
| +=======+__________ |
| | UTRAN | |S12 |
| | +======+ | |
| +======| | | |
| +======| SGSN |___ | |
| | +======+ || |
| | GERAN | | S4|| |
| +=======+ |(GTP-C|| |
| S3| VO,V1|| |
| | GTPU|| |
| |VO,V1)|| |
| +======+ || |
| ____| MME |__ || |
| | +======+ ||| |
| S1-MME| S11 ||| |
| | GTP-C ||| |
| | (V0,V1,V2) ||| |
|+====+ +========+ +======+ +======+ | +===+
|| UE |-|E-Utran | | SGW | | PGW |-SGi-|PDN|
|| | |(EnodeB)| | | | | | | |
|+====+ +========+ +======+ +======+ | +===+
| | | | GTP-C | |
| | | |(vo,v1,v2)| |
| | | |GTP-C | |
| | | | (vo,v1) | |
| | GTP v2-u | | | |
| ------------ ----------- |
| (S1-U) S5 |
| |
+------------------------------------------------+
This architecture supports the non-roaming and roaming
architectures using GTP based protocol on the PGW and SGW
with a number of functions. It support high number of
subscribers with their associated control messages and
data traffic. Each of this association forms an entry in
PGW and SGW and is commonly know as bearers.
The various features used by this architecture and their
attributes are captured in this MIB:
1. Overload protection, handles congestion control, SGW and
PGW represent congestion as a DFP metric considering the
current CPU, memory usage and number of bearers open. On
reaching the low congestion threshold, based on the ARP, high
priority calls are accepted and those with a lower priority
are rejected. Once the high threshold is reached all new
calls are rejected.
2. Buffering agent, the SGW buffers the data packets in the
downlink direction till the downlink path/peer information is
ready. It buffers all packets coming from any gateway based
on the default/configured values of the buffer size, discard
period and number of packets. Packets will be buffered on a
per bearer basis and retrieved in the order it was buffered
using the handle given by the buffering agent initially. If
the buffer is full then no more bearers will be accepted.
Acronyms and terms:
3GPP 3rd Generation Partnership Project
DFP Dynamic Feedback Protocol
EDGE Enhanced Data rates for GSM Evolution
EPC Evolved Packet Core
E-UTRAN Evolved UTRAN
GERAN GSM EDGE Radio Access Network
GPRS General Packet Radio Service
GSM Global System for Mobile communications
GTP GPRS Tunneling Protocol
PDN Public Data Network
PGW PDN Gateway
SAE System Architecture Evolution
SGW Serving Gateway
SP GW An integrated SGW and PGW Gateway
UE User Equipment
UMTS Universal Mobile Telecommunications System
UTRAN UMTS Radio Access Network
REFERENCE
[1] 3GPP: Evolved GPRS Tunneling Protocol for Control
Plane (GTPv2-C). 3GPP TS 29.274 V1.3.1.
[2] 3GPP: GPRS enhancements for E-UTRAN access.
3GPP TS 23.401 V8.3.0.
[3] 3GPP: Circuit Switched fallback in Evolved
Packet System(EPS). 3GPP TS 23.272. |
MODULE-IDENTITY |
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cegCongestionIncomingReqDrops |
1.3.6.1.4.1.9.9.731.1.1.1.1 |
This object represents the total number of
incoming calls dropped at the gateway.
This counter is incremented when the gateway
receives an incoming call request at high
congestion level, and the request is dropped. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegCongestionLowThresholdReached |
1.3.6.1.4.1.9.9.731.1.1.1.2 |
This object represents the number of times
low congestion occurred on the gateway.
The value is equal to the number of times
the gateway exceeded the congestion threshold
cegCongestionLowThreshold. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegCongestionHighThresholdReached |
1.3.6.1.4.1.9.9.731.1.1.1.3 |
This object represents the number of times
high congestion occurred on the gateway.
The value is equal to the number of times
the gateway exceeded the congestion threshold
cegCongestionHighThreshold. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBuffersCreated |
1.3.6.1.4.1.9.9.731.1.1.2.1 |
This object represents the total number of
buffers allocated by buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBuffersDeleted |
1.3.6.1.4.1.9.9.731.1.1.2.2 |
This object represents the total number of
buffers deallocated by buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBuffersTimedOut |
1.3.6.1.4.1.9.9.731.1.1.2.3 |
This object represents the total number of
buffers that got timed out, at buffering agent.
A buffer is timed out when the discard timer
cegBufferDiscardDataTime expires. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferPacketsEnqueued |
1.3.6.1.4.1.9.9.731.1.1.2.4 |
This object represents the total number of
packets enqueued to the buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferPacketsDequeued |
1.3.6.1.4.1.9.9.731.1.1.2.5 |
This object represents the total number of
packets dequeued from the buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferBytesEnqueued |
1.3.6.1.4.1.9.9.731.1.1.2.6 |
This object represents the total bytes of
data enqueued to the buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferBytesDequeued |
1.3.6.1.4.1.9.9.731.1.1.2.7 |
This object represents the total bytes of
data dequeued from the buffering agent. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferRejMemUnavailable |
1.3.6.1.4.1.9.9.731.1.1.2.8 |
This object represents the total number of times, buffer
allocation is rejected by gateway due to, requested memory
is greater than cegTotalBufferAvailable. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegBufferRejLowMem |
1.3.6.1.4.1.9.9.731.1.1.2.9 |
This object represents the total number of times, buffer
allocation is rejected due to, low memory availability in
the gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Counter32 |
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cegCongestionLowThreshold |
1.3.6.1.4.1.9.9.731.1.2.1.1 |
This object specifies the low threshold
for congestion. Congestion DFP metric
considers the current CPU memory usage
and number of bearers open. On reaching
the low congestion threshold, based on the
ARP, high priority calls are accepted and
those with a lower priority are rejected. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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Unsigned32 |
0..100 |
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cegCongestionHighThreshold |
1.3.6.1.4.1.9.9.731.1.2.1.2 |
This object specifies the high threshold
for congestion. Congestion DFP metric
considers the current CPU memory usage
and number of bearers open. Once the
high threshold is reached all new calls
are rejected. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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Unsigned32 |
0..100 |
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cegBufferingAgentEnabled |
1.3.6.1.4.1.9.9.731.1.2.2.1 |
This object specifies the state of
the buffering agent.
'true' - indicates that the buffering agent
is enabled.
'false' - indicates that the buffering agent
is disabled. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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TruthValue |
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cegBufferMaxSize |
1.3.6.1.4.1.9.9.731.1.2.2.2 |
This object represents the maximum size of a
buffer that can be allocated for a bearer.
This object is directly dependent on object
cegBufferingAgentEnabled and is applicable
only when buffering agent is enabled, that is
when cegBufferingAgentEnabled is 'true'. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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Unsigned32 |
400..12000 |
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cegBufferDiscardDataTime |
1.3.6.1.4.1.9.9.731.1.2.2.3 |
This object specifies the duration for which
the buffering agent waits before discarding a
buffer.
The discard timer begins when a packet is
enqueued in the allocated buffer for a bearer.
Whenever a packet is enqueued for a bearer, the
discard timer is reset. If the timer expires,
then the buffer is freed. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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Unsigned32 |
1..300 |
|
cegBufferMaxPacketsPerBuffer |
1.3.6.1.4.1.9.9.731.1.2.2.4 |
This object specifies the maximum
number of packets allowed per buffer in
buffering agent.
Any new incoming packet after this
value has reached its maximum will be
dropped. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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Unsigned32 |
1..15 |
|
cegVersion |
1.3.6.1.4.1.9.9.731.1.3.1 |
This object represents the current
version of the PGW or SGW software
running on the gateway.
Display format:
: :. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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SnmpAdminString |
Size(1..100) |
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cegActivatedIpv4Bearers |
1.3.6.1.4.1.9.9.731.1.3.2 |
This object represents the total
activated IPv4 GTPv2 bearers. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedIpv6Bearers |
1.3.6.1.4.1.9.9.731.1.3.3 |
This object represents the total
activated IPv6 GTPv2 bearers. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalUsers |
1.3.6.1.4.1.9.9.731.1.3.4 |
This object represents the total number of
users connected to the gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalIdleUsers |
1.3.6.1.4.1.9.9.731.1.3.5 |
This object represents the total number of users
currently in ISR state in the gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalSuspendedUsers |
1.3.6.1.4.1.9.9.731.1.3.6 |
This object represents the total number of users
suspended by the gateway.
A user would be suspended when E-UTRAN coverage is
overlapped by either GERAN or UTRAN coverage leading
to a Circuit Switch fallback from E-UTRAN. The Circuit
Switch fallback enables reuse of voice and other Circuit
Switch services by reuse of the Circuit Switch
infrastructure. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedIpv4v6Sessions |
1.3.6.1.4.1.9.9.731.1.3.7 |
This object represents the total number of activated
IPv4v6 sessions. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedIpv4v6Bearers |
1.3.6.1.4.1.9.9.731.1.3.10 |
This object represents the total number of activated
IPv4v6 bearers. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedGtpv2SgwSessions |
1.3.6.1.4.1.9.9.731.1.3.11 |
This object represents the total number of activated
GTPV2 sessions in SGW mode. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedGtpv2PgwSessions |
1.3.6.1.4.1.9.9.731.1.3.12 |
This object represents the total number of activated
GTPV2 sessions in PGW mode. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
|
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cegActivatedGtpv2SPgwSessions |
1.3.6.1.4.1.9.9.731.1.3.13 |
This object represents the total number of activated
GTPV2 sessions in SP GW mode. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegCongestionDfpWeight |
1.3.6.1.4.1.9.9.731.1.3.8.1 |
This object represents the DFP weight value, which
is the measure of the load on CPU in the gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Unsigned32 |
0..65535 |
|
cegCongestionStatus |
1.3.6.1.4.1.9.9.731.1.3.8.2 |
This object represents the gateway congestion
status.
normal - The gateway is not in a congestion state.
At this state, the value of cegCongestionDfpWeight
is less than value of cegCongestionLowThreshold.
low - The gateway is running in low congestion state.
At this state, the value of cegCongestionDfpWeight
is more than value of cegCongestionLowThreshold but
less than value of cegCongestionHighThreshold.
high - The gateway is running in high congestion state.
At this state, the value of cegCongestionDfpWeight
is more than value of cegCongestionHighThreshold. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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INTEGER |
normal(1), low(2), high(3) |
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cegCongestionLowLastOccurTime |
1.3.6.1.4.1.9.9.731.1.3.8.3 |
This object represents the timestamp at
which low congestion last occurred on the
gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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TimeStamp |
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cegCongestionHighLastOccurTime |
1.3.6.1.4.1.9.9.731.1.3.8.5 |
This object represents the timestamp at
which high congestion last occurred on the
gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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TimeStamp |
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cegActivatedBearers |
1.3.6.1.4.1.9.9.731.1.3.14 |
This object represents the total number of default and
dedicated bearers currently active in the Gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
|
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cegActivatedDedicatedBearers |
1.3.6.1.4.1.9.9.731.1.3.15 |
This object represents the total number of
dedicated bearers currently active in the Gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedIpv4DedicatedBearers |
1.3.6.1.4.1.9.9.731.1.3.16 |
This object represents the total number of IPv4
dedicated bearers currently active in the Gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegActivatedIpv6DedicatedBearers |
1.3.6.1.4.1.9.9.731.1.3.17 |
This object represents the total number of IPv6
dedicated bearers currently active in the Gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
|
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cegTotalIdleSessions |
1.3.6.1.4.1.9.9.731.1.3.18 |
This object represents the total number of sessions
currently in Idle state in the gateway. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalInUseBuffers |
1.3.6.1.4.1.9.9.731.1.3.9.1 |
This object represents the total
number of buffers currently allocated
for the bearers, by buffering agents. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalBufferedPackets |
1.3.6.1.4.1.9.9.731.1.3.9.2 |
This object represents the total
number of packets buffered at present
in the buffers of buffering agents. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalBufferedBytes |
1.3.6.1.4.1.9.9.731.1.3.9.3 |
This object represents the total
number of bytes buffered at present
in the buffers of buffering agents. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegTotalBufferAvailable |
1.3.6.1.4.1.9.9.731.1.3.9.4 |
This object represents the total
unallocated bytes at buffering agents. |
Status: current |
Access: read-only |
OBJECT-TYPE |
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Gauge32 |
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cegCongestionHighNotifEnable |
1.3.6.1.4.1.9.9.731.1.4.1 |
The object controls the generation of
cegCongestionHighThresholdNotif as follows:
'true(1)' - the generation of cegCongestionHighThresholdNotif
notifications is enabled.
'false(2)' - the generation of cegCongestionHighThresholdNotif
notifications is disabled. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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TruthValue |
|
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cegCongestionLowNotifEnable |
1.3.6.1.4.1.9.9.731.1.4.2 |
The object controls the generation of
cegCongestionLowThresholdNotif as follows:
'true(1)' - the generation of cegCongestionLowThresholdNotif
notifications is enabled.
'false(2)' - the generation of cegCongestionLowThresholdNotif
notifications is disabled. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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TruthValue |
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cegCongestionClearNotifEnable |
1.3.6.1.4.1.9.9.731.1.4.3 |
The object controls the generation of
cegCongestionClearedNotif as follows:
'true(1)' - the generation of cegCongestionClearedNotif
notifications is enabled.
'false(2)' - the generation of cegCongestionClearedNotif
notifications is disabled. |
Status: current |
Access: read-write |
OBJECT-TYPE |
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TruthValue |
|
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cegCongestionHighThresholdNotif |
1.3.6.1.4.1.9.9.731.0.1 |
This notification will be sent when
the gateway congestion level goes above
cegCongestionHighThreshold value.
This gives an indication that the gateway
is running at high congestion and at this
state it would reject all new calls. |
Status: current |
Access: read-write |
NOTIFICATION-TYPE |
|
|
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cegCongestionLowThresholdNotif |
1.3.6.1.4.1.9.9.731.0.2 |
This notification will be sent when
the gateway congestion level goes above
cegCongestionLowThreshold value.
This gives an indication that the gateway
is running at low congestion at this
state it can accept only the high priority
calls and those with a lower priority would
be rejected. |
Status: current |
Access: read-write |
NOTIFICATION-TYPE |
|
|
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cegCongestionClearedNotif |
1.3.6.1.4.1.9.9.731.0.3 |
This notification will be sent when
the gateway congestion level goes below
cegCongestionLowThreshold value.
This gives an indication that the gateway
has recovered from congestion and it can
accept all calls. |
Status: current |
Access: read-write |
NOTIFICATION-TYPE |
|
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|
ciscoEpcGatewayMIBCompliance |
1.3.6.1.4.1.9.9.731.3.1.1 |
The compliance statement is for the entities
which implement CISCO-EPC-GATEWAY-MIB.
This is deprecated by ciscoEpcGatewayMIBComplianceRev1. |
Status: deprecated |
Access: read-write |
MODULE-COMPLIANCE |
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ciscoEpcGatewayMIBComplianceRev1 |
1.3.6.1.4.1.9.9.731.3.1.2 |
The compliance statement is for the entities
which implement CISCO-EPC-GATEWAY-MIB.
This is deprecated by ciscoEpcGatewayMIBComplianceRev2. |
Status: deprecated |
Access: read-write |
MODULE-COMPLIANCE |
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ciscoEPCGatewayMIBComplianceRev2 |
1.3.6.1.4.1.9.9.731.3.1.3 |
The compliance statement is for the entities
which implement CISCO-EPC-GATEWAY-MIB.
This is superceded by ciscoEpcGatewayMIBComplianceRev3. |
Status: deprecated |
Access: read-write |
MODULE-COMPLIANCE |
|
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ciscoEpcGatewayMIBComplianceRev3 |
1.3.6.1.4.1.9.9.731.3.1.4 |
The compliance statement is for the entities
which implement CISCO-EPC-GATEWAY-MIB. |
Status: current |
Access: read-write |
MODULE-COMPLIANCE |
|
|
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cegSystemStatusGrp |
1.3.6.1.4.1.9.9.731.3.2.1 |
This group has a collection of objects to provide the
system status. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegOverloadProtectionStatsGrp |
1.3.6.1.4.1.9.9.731.3.2.2 |
This group has a collection of objects to provide the
overload protection statistics. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegBufferingAgentStatsGrp |
1.3.6.1.4.1.9.9.731.3.2.3 |
This group has a collection of objects to provide the
buffering agent statistics. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegOverloadProtectionConfigGrp |
1.3.6.1.4.1.9.9.731.3.2.4 |
This group has a collection of objects which configures
attributes for overload protection. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegBufferingAgentConfigGrp |
1.3.6.1.4.1.9.9.731.3.2.5 |
This group has a collection of objects which configures
the buffering agent. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegBufferingAgentStatusGrp |
1.3.6.1.4.1.9.9.731.3.2.6 |
This group has a collection of objects to provide the
buffering agent status. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
|
cegOverloadProtectionStatusGrp |
1.3.6.1.4.1.9.9.731.3.2.7 |
This group has a collection of objects to provide the
overload protection status. |
Status: current |
Access: read-write |
OBJECT-GROUP |
|
|
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cegOverloadProtectionNotifMgmtGrp |
1.3.6.1.4.1.9.9.731.3.2.8 |
This group has a collection of objects which controls
the generation of congestion notification in the system. |
Status: current |
Access: read-write |
OBJECT-GROUP |
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cegOverloadProtectionNotifGrp |
1.3.6.1.4.1.9.9.731.3.2.9 |
This group has a collection of notification which informs
about the congestion level in the system. |
Status: current |
Access: read-write |
NOTIFICATION-GROUP |
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cegSystemStatusGrpSup1 |
1.3.6.1.4.1.9.9.731.3.2.10 |
This group has objects to supplement the cegSystemStatusGrp. |
Status: current |
Access: read-write |
OBJECT-GROUP |
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cegSystemStatusGrpSup2 |
1.3.6.1.4.1.9.9.731.3.2.11 |
This group has objects to supplement the cegSystemStatusGrp |
Status: current |
Access: read-write |
OBJECT-GROUP |
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cegSystemStatusGrpSup3 |
1.3.6.1.4.1.9.9.731.3.2.12 |
This group has a collection of objects which provides the
details of the EPC Gateway status and supplements the
cegSystemStatusGrp. |
Status: current |
Access: read-write |
OBJECT-GROUP |
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cegBufferingAgentStatsGrpSup1 |
1.3.6.1.4.1.9.9.731.3.2.13 |
This group has a collection of objects to provide the buffering
agent statistics related to packet drops based on max limit. |
Status: current |
Access: read-write |
OBJECT-GROUP |
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