MTU Default and Maximum Values

Table 10 lists MTU values for J Series devices.

Table 10: MTU Values for J2320, J2350, J4350, and J6350 Interfaces

J4350 and J6350 Interfaces	Default Media MTU (bytes)	Maximum MTU (bytes)	Default IP MTU (bytes)
Gigabit Ethernet (10/100/1000) built-in interface	1514	9018	1500
6-Port, 8-Port, and 16-Port Gigabit Ethernet uPIMs	1514	9014	1500
Gigabit Ethernet (10/100/1000) ePIM	1514	9018	1500
Gigabit Ethernet (10/100/1000) SFP ePIM	1514	9018	1500
4-Port Fast Ethernet (10/100) ePIM	1514	1514	1500
Dual-Port Fast Ethernet (10/100) PIM	1514	9192	1500
Dual-Port Serial PIM	1504	9150	1500
Dual-Port T1 or E1 PIM	1504	9192	1500
Dual-Port Channelized T1/E1/ISDN PRI PIM (channelized to DS0s)	1504	4500	1500
Dual-Port Channelized T1/E1/ISDN PRI PIM (clear-channel T1 or E1)	1504	9150	1500
Dual-Port Channelized T1/E1/ISDN PRI PIM (ISDN PRI dialer interface)	1504	4098	1500
T3 (DS3) or E3 PIM	4474	9192	4470
4-Port ISDN BRI PIM	1504	4092	1500
ADSL+2 PIM	4482	9150	4470
G.SHDSL PIM	4482	9150	4470