Configures the SCTP-related
parameters like timeout duration for various timers and cookie life
over an IuH interface in an HNB-GW service.
Privilege:
Security Administrator,
Administrator
Syntax
sctp alpha-rto alpha_rto_dursctp beta-rto beta_rto_dursctp checksum-type [ adler32 | crc32 ]sctp cookie-life cookie_lifesctp max-retx [ init | path | assoc ] max_retrysctp mtu-size [ start | min | max ] mtu_bytesctp rto { initial ini_rto_dur | min min_rto_dur | max max_rto_dur }sctp sack-frequency sack_frqsctp sack-period sack_dursctp max-in-strms in_strmssctp max-out-strms out_strms
default sctp {alpha-rto | beta-rto | checksum-type | cookie-life | max-retx [ init | path | assoc] | mtu-size [start | min | max ] | rto { initial | min | max} | sack-frequency | sack-period | max-in-strms | max-out-strms }
default
Restores
the SCTP parameters to default value in HNB-GW service instance.
Default values for all parameters are as follows:
-
alpha-rto:
5 seconds
-
beta-rto:
10 seconds
-
checksum-type:
CRC32
-
cookie-life:
600 ms
-
max-retx init:
5 retries
-
max-retx path:
5 retries
-
max-retx assoc:
10 retries
-
mtu-size min:
508 Bytes
-
mtu-size max:
1500 Bytes
-
mtu-size start:
508 Bytes
-
rto initial:
30 seconds
-
rto min: 10
seconds
-
rto max: 600
seconds
-
sack-frequency:
2
-
sack-period:
2 ms
-
max-in-strms:
4
-
max-out-strms:
4
alpha-rto alpha_rto_dur
Sets
the alpha retransmission timeout duration (in seconds) for SCTP
association between HNB and HNB-GW as an integer from 0 through
65535. A “zero” value disables the timer in this configuration.
Default: 5
beta-rto beta_rto_dur
Sets
the beta retransmission timeout duration (in seconds) for SCTP association
between HNB and HNB-GW an integer from 0 through 65535. A “zero” value
disables the timer in this configuration. Default: 10
checksum-type [ adler32 | crc32 ]
Sets
the checksum algorithm type to be used in SCTP association between
HNB and HNB-GW for packet validation. Default: CRC32
adler32: Specifies
the SCTP association to use Adler32 checksum algorithm for packet
validation. By default this is disabled.
crc32: Specifies
the SCTP association to use 32-bit cyclic redundancy check (CRC)
algorithm for packet validation. By default this is enabled.
cookie-life cookie_life
Sets
the COOKIE life (in milliseocnds) for SCTP association between HNB
and HNB-GW as an integer from 500 through 120000. Default: 600
max-retx [ init | path | assoc ] max_retry
Sets
the maximum number of retries allowed in SCTP states for SCTP association
between HNB and HNB-GW.
init: Sets
the maximum attempts allowed after T1-init timer expires. If the
T1-init timer expires then the HNB-GW retransmits INIT chunk and
re-start the T1-init timer without changing state. This is repeated
up to the configured times with this configuration. After that,
the HNB-GW aborts the initialization process. Default number of attempts max_retry for
this state is 5.
path: Sets
the maximum attempts allowed after T3-rtx timer expires. Each time
the T3-rtx timer expires on any address, or when a HEARTBEAT sent
to an idle address is not acknowledged within a RTO, the error counter
of that destination address incremented. When the value in the error
counter exceeds this protocol parameter of that HNB address, the
HNB-GW marks the destination transport address as inactive. Default
number of attempts max_retry for
this state is 5.
assoc: Sets
the maximum number of consecutive retransmissions to its peer is
allowed. If the value of this counter exceeds the limit configured with
this keyword the HNB-GW considers the peer HNB unreachable and stop
transmitting any more data to it. The SCTP association is automatically
closed when the peer endpoint becomes unreachable. Default number
of attempts max_retry for
this state is 10.
max_retry is
an integer from 1 through 255.
mtu-size [ min | max | sart ] mtu_byte
Sets
the maximum transmission unit (MTU) size in Bytes for SCTP association
between HNB and HNB-GW.
min: Sets
the minimum size of MTU for SCTP association between HNB and HNB-GW.
Default minimum MTU size mtu_byte is
508 Bytes.
max: Sets
the maximum size of MTU for SCTP association between HNB and HNB-GW.
Default maximum MTU size mtu_byte is
1500 Bytes.
start: Sets
the size of MTU for SCTP association at the start of session between
HNB and HNB-GW. Default MTU size mtu_byte at
initial sate is 508 Bytes.
mtu_byte is
an integer from 508 to 65535.
rto { initial
ini_rto_dur | min min_rto_dur | max
max_rto_dur }
Sets
the Retransmission TimeOut (RTO) duration parameters for SCTP association
between HNB and HNB-GW.
initial ini_rto_dur:
Sets the initial retransmission timeout duration (in seconds) for
SCTP association between HNB and HNB-GW as an integer from 1 through
1200. Default: 30.
min min_rto_dur:
Sets the minimal retransmission timeout duration (in seconds) for
SCTP association between HNB and HNB-GW as an integer from 1 through
50. Default: 10
max max_rto_dur:
Sets the maximum retransmission timeout duration (in seconds) for
SCTP association between HNB and HNB-GW as an integer from 5 through
1200. Default: 600.
sack-frequency sack_frq
Sets
the number of chunks received before sending the Selective Acknowledgement
chunk HNB from HNB-GW in SCTP association. the SACK chunk is sent
to the HNB to acknowledge received DATA chunks and to inform the
HNB of gaps in subsequently received DATA chunks.
sack_frq is
the frequency after which SACK chunk is sent to HNB specified as
an integer from 1 through 5. Default: 2
sack-period sack_dur
Sets
the duration (in seconds) after which Selective Acknowledgement
chunk is sent to HNB from HNB-GW in SCTP association. The SACK chunk
is sent to the HNB to acknowledge received DATA chunks and to inform
the HNB of gaps in subsequently received DATA chunks.
sack_dur is
an integer from 0 through 5. A “zero” value disables
the parameter.
max-in-strms in_strms
Sets
the maximum number of inward SCTP streams allowed on HNB-GW for
an associated HNB in an SCTP association as an integer from 1 through
16. Default: 4
max-out-strms out_strms
Sets
the maximum number of outgoing SCTP streams allowed from HNB-GW
for an associated HNB in an SCTP association as an integer from
1 through 16. Default: 4
Usage:
Use this command to
configure the SCTP protocol messaging and session management parameters
in SCTP association between HNB and HNB-GW.
Example:
The following command
sets the SCTP COOKIE life to
600 milliseconds
on HNB-GW for the SCTP association:
default sctp cookie-life