Juniper SRX Series User Manual

Table 8: MTU Terms
DefinitionTerm
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 mtu mtu-value
Physical Interface MTU–Default
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 unit interface-unit-number family family-name mtu
mtu-value
Logical Interface MTU–Default
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.
Maximum MTU
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
Maximum MTU
(Bytes)
Logical Interface
MTU
(Bytes)–Default
Physical Interface
MTU
(Bytes)–DefaultPIM
9010150015141–Port Gigabit
Ethernet small
form-factor pluggable
(SFP) Mini-PIM
1518150015141–Port small
form-factor pluggable
(SFP) Mini-PIM
150415001504DOCSIS Mini-PIM
200015001504Serial Mini-PIM
200015001504T1/E1 Mini-PIM
900015001504Dual CT1/E1 GPIM
900015001504Quad CT1/E1 GPIM
9192150015048–Port Serial GPIM
9192150015041–Port Clear Channel
DS3/E3 GPIM
13Copyright © 2015, Juniper Networks, Inc.
Chapter 1: SRX Series Services Gateway Interface Modules Support

Juniper SRX Series Specifications

General

Brand	Juniper
Model	SRX Series
Category	Gateway
Language	English