Table 8: Mtu Terms; Table 9: Mtu Values For The Srx Series Services Gateway Pims - Juniper SRX Series Manual

Table 8: MTU Terms

Term
Physical Interface MTU–Default
Logical Interface MTU–Default
Maximum MTU
Copyright © 2015, Juniper Networks, Inc.
Definition
Default value of the MTU at the physical interface. The maximum value of the MTU
at the physical interface includes the protocol overhead. You can configure the default
MTU value at the physical interface by using the following command:
set interface interface-name
Default value of the MTU at the logical interface. The default value is configured at
the family level and does not include the protocol overhead. You can configure the
default MTU value for each logical unit at the logical interface by using the following
command:
set interface
interface-name
mtu-value
Maximum MTU is the size, measured in bytes, of the largest physical packet that a
network can transmit. Any message larger than the MTU is divided into smaller
packets before it is sent to its final destination.
Table 9 on page 13 lists the MTU values for the SRX Series Services Gateway Physical
Interface Modules (PIMs).

Table 9: MTU Values for the SRX Series Services Gateway PIMs

Physical Interface
MTU
PIM (Bytes)–Default
1–Port Gigabit 1514
Ethernet small
form-factor pluggable
(SFP) Mini-PIM
1–Port small 1514
form-factor pluggable
(SFP) Mini-PIM
DOCSIS Mini-PIM 1504
Serial Mini-PIM 1504
T1/E1 Mini-PIM 1504
Dual CT1/E1 GPIM 1504
Quad CT1/E1 GPIM 1504
8–Port Serial GPIM 1504
1–Port Clear Channel 1504
DS3/E3 GPIM
Chapter 1: SRX Series Services Gateway Interface Modules Support
mtu mtu-value
unit
interface-unit-number
Logical Interface
MTU
(Bytes)–Default
1500
1500
1500
1500
1500
1500
1500
1500
1500
family mtu
family-name
Maximum MTU
(Bytes)
9010
1518
1504
2000
2000
9000
9000
9192
9192
13