Alcatel-Lucent 7705 Interface Configuration Manual page 124

Card, Adapter Card, and Port Command Reference
The no form of this command restores the default.
Default access
Parameters access — configures the channel as service access
network — configures the channel for transport network use
mtu
Syntax mtu mtu-bytes
no mtu
Context config>port>tdm>ds1>channel-group
config>port>tdm>e1>channel-group
Description This command configures the maximum payload MTU size for a port.
Packets received that are larger than the MTU will be fragmented or discarded, depending on whether
the DF bit is set in the packet header.
If the port mode or encapsulation type is changed, the MTU assumes the default values of the new
mode or encapsulation type.
The no form of this command restores the default values.
Default The default MTU value depends on the port type, mode and encapsulation as listed in the following
table:
Parameters mtu-bytes — sets the maximum allowable size of the MTU, expressed as an integer
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Type
TDM (PW)
TDM (ATM PW)
TDM (PPP/MLPPP)
TDM (PPP/MLPPP)
Values 512 to 1572 bytes
Mode
Access
Access
Network
Access
7705 SAR OS Interface Configuration Guide
Encap Type Default
(Bytes)
cem 1572
atm 1572
ppp-auto 1572
ipcp 1572