Configuring The Interface Speed; Management Ethernet Interface On M Series And T Series Routers; Gigabit Ethernet Interfaces On J Series Routers; Fast Ethernet Interface - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

JUNOS 10.1 Network Interfaces Configuration Guide
local router can receive packets with compression. If the peer indicates that it, too,
can receive packets with compression, then PFC is negotiated. If PFC is successfully
negotiated, the local router can receive packets with either 2-byte (uncompressed)
or 1-byte (compressed) protocol fields.
To monitor the configuration, issue the
Configured options are displayed in the
Successfully negotiated options are displayed in the
In this example, both ACFC and PFC are configured, but neither compression feature
has been successfully negotiated.
user@router# run show interfaces so-0/1/1
Physical interface: so-0/1/1, Enabled, Physical link is Up
Loopback: None, FCS: 16,
Not-configured

Configuring the Interface Speed

You can configure the interface speed on the following interfaces:

Management Ethernet Interface on M Series and T Series routers

By default, the M Series and T Series routers management Ethernet interface
autonegotiates whether to operate at 10 megabits per second (Mbps) or 100 Mbps.
All other interfaces automatically choose the correct speed based on the PIC type
and whether the PIC is configured to operate in multiplexed mode (using the
134
Configuring the Interface Speed
Interface index: 133, SNMP ifIndex: 27
Link-level type: PPP, MTU: 4474, Clocking: Internal, SONET mode, Speed: OC3,
Payload scrambler: Enabled
Device flags : Present Running
Interface flags: Point-To-Point SNMP-Traps 16384
Link flags : No-Keepalives ACFC PFC
LCP state: Opened
NCP state: inet: Opened, inet6: Not-configured, iso: Not-configured, mpls:
CHAP state: Not-configured
CoS queues : 4 supported
Last flapped : 2004-12-29 10:49:32 PST (00:18:35 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
SONET alarms : None
SONET defects : None
Logical interface so-0/1/1.0 (Index 68) (SNMP ifIndex 169)
Flags: Point-To-Point SNMP-Traps ACFC Encapsulation: PPP
Protocol inet, MTU: 4470
Flags: None
Addresses, Flags: Is-Preferred Is-Primary
Destination: 3.3.3/24, Local: 3.3.3.2, Broadcast: 3.3.3.255
Management Ethernet Interface on M Series and T Series routers on page 134
Gigabit Ethernet Interfaces on J Series Routers on page 135
Fast Ethernet Interface on page 135
Tri-Rate Ethernet Copper Interface on page 136
SONET/SDH Interface on page 136
show interfaces interface-name
link flags field for the physical interface.
field for the logical interface.
flags
command.