Configuring The Link Characteristics - Juniper JUNOS 10.1 - CONFIGURATION GUIDE 1-2010 Configuration Manual

Physical interface: fe-0/0/1, Enabled, Physical link is Up
To display the interface description from the interfaces MIB, use the
command from a server. To isolate information for a specific interface, search for
the interface index shown in the
output. The
user-server>snmpwalk host-fxp0.mylab public ifXTable | grep -e '\.23'
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifName.23 = fe-0/0/1
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifInMulticastPkts.23 = Counter32: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifInBroadcastPkts.23 = Counter32: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifOutMulticastPkts.23 = Counter32: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifOutBroadcastPkts.23 = Counter32: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInOctets.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInUcastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInMulticastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCInBroadcastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCOutOctets.23 = Counter64: 42
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCOutUcastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCOutMulticastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHCOutBroadcastPkts.23 = Counter64: 0
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifLinkUpDownTrapEnable.23 = enabled(1)
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifHighSpeed.23 = Gauge32: 100
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifPromiscuousMode.23 = false(2)
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifConnectorPresent.23 = true(1)
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifAlias.23 = Backbone connection to PHL01
ifMIB.ifMIBObjects.ifXTable.ifXEntry.ifCounterDiscontinuityTime.23 = Timeticks:
(0) 0:00:00.00

Configuring the Link Characteristics

By default, the router s management Ethernet interface,
whether to operate in full-duplex or half-duplex mode. Fast Ethernet and J Series
router Gigabit Ethernet interfaces can operate in either full-duplex or half-duplex
mode, and all other interfaces can operate only in full-duplex mode. For Gigabit
Ethernet, the link partner must also be set to full duplex.
NOTE: When you configure the Tri-Rate Ethernet copper interface to operate at
1 Gbps, autonegotiation must be enabled.
NOTE: When you manually configure Fast Ethernet interfaces on the M Series and
T Series routers, link mode and speed must both be configured. If both these values
are not configured, the router uses autonegotiation for the link and ignores the
user-configured settings.
To explicitly configure an Ethernet interface to operate in either full-duplex or
half-duplex mode, include the
hierarchy level:
Interface index: 129, SNMP ifIndex: 23
Description: Backbone connection to PHL01
...
object is in
ifAlias
snmpwalk host-fxp0.mylab public ifXTable | grep -e '\.23'
Chapter 3: Configuring Physical Interface Properties
field of the
SNMP ifIndex
.
ifXTable
statement at the
link-mode
Configuring the Link Characteristics
snmpwalk
command
show interfaces
or , autonegotiates
fxp0 em0
[edit interfaces interface-name]
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