Configuring The Media Mtu - Juniper JUNOS OS 10.4 - FOR EX REV 1 Manual

Complete Software Guide for Junos

Configuring the Media MTU

1304
®
OS for EX Series Ethernet Switches, Release 10.4
You can include this statement at the following hierarchy levels:
[edit interfaces interface-name unit logical-unit-number]
[edit logical-systems logical-system-name interfaces interface-name unit
logical-unit-number]
is the peak rate, in bps or cps. You can specify a value in bits per second either as a
rate
complete decimal number or as a decimal number followed by the abbreviation
(1,000,000), or (1,000,000,000). You can also specify a value in cells per second
m g
by entering a decimal number followed by the abbreviation
per second are converted to bits per second using the formula 1 cps = 384 bps. The value
can be any positive integer. The
except multilink and aggregated interfaces.
The default media MTU size used on a physical interface depends on the encapsulation
used on that interface. In some cases, the default IP Protocol MTU depends on whether
the protocol used is IP version 4 (IPv4) or International Organization for Standardization
(ISO). Table 192 on page 1304 through Table 202 on page 1311 list the media and protocol
MTU sizes by interface type, and Table 203 on page 1311 lists the encapsulation overhead
by encapsulation type.
Table 192: Media MTU Sizes by Interface Type for M5, M7i with CFEB, M10,
M10i with CFEB, M20, and M40 Routers
Default Media
Interface Type MTU (Bytes)
Adaptive Services 9192
(MTU size not
configurable)
ATM 4482
E1/T1 1504
E3/T3 4474
Fast Ethernet 1514
Gigabit Ethernet 1514
Serial 1504
SONET/SDH 4474
bandwidth statement is valid for all logical interfaces,
Maximum MTU
(Bytes)
N/A
9192
9192
9192
9192 (4-port)
1532 (8-port)
1532 (12-port)
9192
9192
9192
Copyright © 2010, Juniper Networks, Inc.
k (1000),
; values expressed in cells
c
Default IP Protocol
MTU (Bytes)
N/A
4470
1500
4470
1500 (IPv4), 1497
(ISO)
1500 (IPv4), 1497
(ISO)
1500 (IPv4), 1497
(ISO)
4470