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>> Table: pppExtIfTable - (.1.3.6.1.4.1.272.4.3.9.1)

pppExtIfTable
OIDNameTypeAccess
.1IndexINTEGERRW
.2BodModeENUMD
.3AlgorithmENUMRW
.4IntervalINTEGERRW
.5LoadINTEGERR
.6MlpFragmentationENUMRW
.7MlpFragSizeINTEGERRW
.8PPPoEServiceDisplayStringRW
.9PPPoEAcServerDisplayStringRW
.10EncKeyNegotiationENUMRW
.11EncTxKeyOCTET STRINGRW
.12EncRxKeyOCTET STRINGRW
.13GearUpThresholdINTEGERRW
.14GearDownThresholdINTEGERRW
.15AodiDChanQlenINTEGERRW
.16AodiGearDownTxRateINTEGERRW
.17GearUpPersistanceINTEGERRW
.18GearDownPersistanceINTEGERRW
.19L1SpeedINTEGERRW
.20CurrentRetryTimeINTEGERRW
.21MaxRetryTimeINTEGERRW
.22MtuINTEGERRW
.23MruINTEGERRW
.24AuthMutualENUMRW
.25AuthRestartENUMRW
.26DialProfileIndexINTEGERRW
.27DialinL1ProtocolENUMRW
.28pppoeEthIfIndexINTEGERRW
.29pppoaPvcIfIndexINTEGERRW

Index
Correlating PPP interface index.
BodMode
Enables bandwidth on demand (BOD) mode for leased line and

dialup interfaces when setting to bod-active (3) respectively

bod-passive (4) or backup only mode for leased line

connections like X.21. When set to disabled (1), neither

bandwidth on demand (as specified by the pppExtIfTable) or

backup mode is enabled. Four modes (bap-active (5),

bap-passive (6), bap-both(7) and bap-first (8)) are available

for BAP (Bandwidth Allocation Protocol) support to specify

wether BAP Call-Requests and BAP Callback-Requests should be

initiated and/or accepted.
Enumerations:
  • disabled (1)
  • backup (2)
  • bod-active (3)
  • bod-passive (4)
  • bap-active (5)
  • bap-passive (6)
  • delete (7)
  • bap-both (8)
  • bap-first (9)
  • bap-client (10)
  • bap-server (11)
Algorithm
The algorithm to use for weighting line utilization.

Line utilization is determined by calculating the average

load for each interface. When set to equal (1) all samples

taken over the time interval (defined in pppExtIfInterval)

will be given equal weight, when set to proportional (2)

the weighting disproportional to the age of the sample.
Enumerations:
  • equal (1)
  • proportional (2)
Interval
The time interval (in seconds) to use for sampling and

calculating of the average throughput of the interface.

See also: pppExtIfLoad.
Load
The actual throughput (in percent) of the total bandwidth

of this interface (load). This value is updated once every

second.
MlpFragmentation
The multilink PPP fragmentation mode. When set to

proportional (1) packets will be divided into fragments

proportional to the transmission rate of each link,

when set to equal (2) packets will be divided into multiple

equal fragments (equal to MlpFragSize) such that the number

sent on each link is proportional to the transmission rate.

When set to interleave (3), large datagrams will be

fragmentated (maximum size determined by MlpFragSize) to

reduce transmission delay of high-priority traffic on

slower links.
Enumerations:
  • proportional (1)
  • equal (2)
  • interleave (3)
MlpFragSize
The multilink PPP fragment size. If MlpFragmentation is set

to proportional (1) this value specifies the minimum size

of the fragment in bytes. If MlpFragmentation is set to

equal (2) this value specifies the maximum fragment size

in bytes.
PPPoEService
The PPPoE (PPP over Ethernet, RFC 2516) service name which

indicates the requested service during PPPoE discovery stage.

Examples of the use of the service name are to indicate an

ISP name or a class or a quality of service.
PPPoEAcServer
The PPPoE (PPP over Ethernet, RFC 2516) AC-Server name which

determines the access concentrator during PPPoE discovery

stage.
EncKeyNegotiation
This variable defines the specification of shared secrets

(encryption keys) between the sender and receiver of

encrypted data. If set to static (1), the keys specified in

'pppExtIfEncTxKey' and 'pppExtIfEncRxKey' will be used, if

set to authentication (2), the key derivation is based on

PPP authentication via CHAP or MS-CHAP.
Enumerations:
  • static (1)
  • authentication (2)
EncTxKey
Static (encryption) key used for transmission of encrypted

data via PPP. It's size depends on the used encryption 

algorithm and the corresponding key length, e.g. 'des_56'

or 'blowfish_168'.
EncRxKey
Static (decryption) key used for decryption of encrypted

data received on PPP connections. It's size depends on the

used encryption algorithm and the corresponding key length,

e.g. 'des_56' or 'blowfish_168'.
GearUpThreshold
Gear up threshold for invoking current bandwidth. The

measured throughput (in percent of the total bandwidth) of

this interface (see pppExtIfLoad) is compared with this value

once per second. If exceeded longer than 5 seconds an

additional B-channel will be requested.
GearDownThreshold
Gear down threshold for decreasing current bandwidth. The

expected throughput (in percent of the total bandwidth) of

this interface (see pppExtIfLoad) after dropping a B-channel

is compared with this threshold value once per second. If the

needed bandwidth falls below this threshold longer than 10

seconds, exactly one B-channel will be dropped.
AodiDChanQlen
Upper threshold for the amount of data (in octets) waiting

to be sent across the 9.6Kbit/sec D-channel. If exceeded,

additional bandwidth will be invoked at once.
AodiGearDownTxRate
Lower threshold for the amount of data in bits per second

to be sent across the 64Kbit/sec B-channel. If the measured

throughput becomes smaller than this value over a period of

pppExtIfGearDownPersistance seconds, the remaining B-channel

will be dropped.
GearUpPersistance
Gear up persistence interval for invoking current bandwidth.

The measured throughput (in percent of the total bandwidth)

of this interface (see pppExtIfLoad) is compared with the

current value of the variable pppExtIfGearUpThreshold once

per second. If exceeded longer than pppExtIfGearUpPersistance

seconds an additional B-channel will be requested.
GearDownPersistance
Gear down persistence interval for decreasing current

bandwidth. The measured throughput (in percent of the total

bandwidth) of this interface (see pppExtIfLoad) is compared

with the current value of pppExtIfGearDownThreshold once per

second. If exceeded longer than pppExtIfGearDownPersistance

seconds, exactly one B-channel will be dropped.
L1Speed
This object contains the interface's nominal bandwidth

in bits per second. Please note that this parameter may

not represent the real available transmission rate. The

current purpose is only informational for example for PPTP

or PPPoE interfaces where no accurate information from

the underlaying network is available.
CurrentRetryTime
Current time in seconds to wait before retrying a call when

the smart retry algorithm is implemented.
MaxRetryTime
Maximum time in seconds to wait before retrying a call when

the smart retry algorithm is implemented. When set to zero

this algorithm is disabled.
Mtu
Determines size of the largest datagram which can be

sent on the interface, specified in octets (see ifMtu).

When set to zero (default), the value of the variable

ifMtu depends on the received LCP MRU/MRRU option.
Mru
The maximum length for the PPP information field, including

padding, but not including the protocol field, is termed

the Maximum Receive Unit (MRU).
AuthMutual
This object enables mutual PPP authentication between the

peers.
Enumerations:
  • disabled (1)
  • enabled (2)
AuthRestart
This object enables a two-phase PPP authentication scheme

where an initial PPP authentication procedure is partially

handled by a proxy and finally relayed to the target server

which restarts a full LCP negociation.
Enumerations:
  • disabled (1)
  • enabled (2)
DialProfileIndex
References the associated dial profile.
DialinL1Protocol
This variable determines the permitted layer 1 protocol

for incoming calls. If set to all(1) there is no specific

restriction. In all other cases incoming calls are either

rejected (when identified via CLID) or terminated after

identification via PPP authentication (inband authentication)

if the used layer 1 protocol doesn't match. Note that this

check will be also performed for any initial call used to

initiate a callback.
Enumerations:
  • data-64k (1)
  • data-56k (2)
  • modem (3)
  • dovb (4)
  • v110-1200 (5)
  • v110-2400 (6)
  • v110-4800 (7)
  • v110-9600 (8)
  • v110-14400 (9)
  • v110-19200 (10)
  • v110-38400 (11)
  • modem-profile-1 (12)
  • modem-profile-2 (13)
  • modem-profile-3 (14)
  • modem-profile-4 (15)
  • modem-profile-5 (16)
  • modem-profile-6 (17)
  • modem-profile-7 (18)
  • modem-profile-8 (19)
  • pptp-pns (20)
  • pppoe (21)
  • pppx25 (22)
  • pptp-pac (23)
  • l2tp-lns (24)
  • l2tp-lac (25)
  • all (31)
pppoeEthIfIndex
Determines the Ethernet interface to be used for

PPP over Ethernet (PPPoE) according RFC 2516. If not

specified here the value in biboPPPProfilePPPoEDevIfIndex

will be used as fallback (backward compatiblity).
pppoaPvcIfIndex
Determines the ATM PVC to be used PPP over Ethernet (PPPoA)

according RFC 2364 - PPPoA on demand mode. If not specified

here the first ATM PVC configured for PPPoA on demand

(see pppoaPvcEntryTable) will be used as fallback.


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