Cisco Systems ASR9001 Manual De Usuario

The RP Auxiliary (AUX) port is a RJ-45 interface for connecting a modem or other data communication 
equipment (DCE) device (such as another router) to the RP. The AUX port supports hardware flow 
control and modem control.

 lists the signals used on the Auxiliary port.

The RP has two RJ45 media-dependent interface (MDI) Ethernet management LAN ports: MGT LAN 0 
and MGT LAN 1 (see 

These ports are used for IEEE 802.3 10BASE-T (10 Mbps), IEEE 802.3u 100BASE-TX (100 Mbps), or 
1000BASE-T (1000 Mbps) Ethernet connections.

The transmission speed of the management LAN ports is not user-configurable. The transmission speed 
is set through an auto-sensing scheme on the RP; the speed is determined by the network to which that 
the Ethernet port is connected. The combined total input rate of both MGT LAN 0 and MGT LAN 1 is 
about 12 Mbps. 

Management port characteristics are:

Maximum transmission unit (MTU) is fixed at 1514 and cannot be configured.

Flow control is disabled and cannot be configured.

Input unicast packets with an unknown destination address are filtered and dropped.

Autonegotiation of port speed (10/100/1000) and duplex (full/half) is supported. Autonegotiation 
cannot be disabled.

 lists the signals used on the Management LAN ports.

1

RTS

Output

Request to send

2

DTR

Output

Data terminal ready

3

TxD Output

Transmit 

data 

4

GND

—

Signal ground

5

GND

—

Signal ground

6

RxD Input

Receive 

data 

7

DSR

Input

Data set ready

8

CTS

Input

Clear to send

1

Transmit+

BI_DA+

2

Transmit–

BI_DA–

3

Receive+ BI_DB+