7705 SAR Interfaces
7705 SAR OS Interface Configuration Guide Page 41
Default MTU Values
Table 3 displays the default and maximum port MTU values that are dependent upon the
port type, mode, and encapsulation type.
For more information on MTU (in particular, as they apply to services), refer to the 7705
SAR OS Services Guide. For information on encapsulation, refer to the 7705 SAR OS
Quality of Service Guide.
Deploying Preprovisioned Components
When a CSM or adapter card is installed in a preprovisioned slot, the system tests for
discrepancies between the preprovisioned card and card type configurations and the types
actually installed. Error messages display if there are inconsistencies, and the card will not
initialize.
When the proper preprovisioned cards are installed into the appropriate chassis slot, alarm,
status, and performance details will be displayed on the CLI.
Table 3: MTU Default Values
Port Type Mode Encap Type Default
(bytes)
Max MTU
(bytes)
10/100 Ethernet Access/Network null 1514 1514 (access)
1572 (network)
10/100 Ethernet Access/Network dot1q 1518 1518 (access)
1572 (network)
GigE SFP Access/Network null 1572 1572
GigE SFP Access/Network dot1q 1572 1572
TDM (PW) Access cem 1572 1572
TDM (ATM PW) Access atm 1572 1572
TDM (PPP/MLPPP) Network ppp-auto 1572 1572
TDM (PPP/MLPPP) Access ipcp 1572 1572
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