Half Duplex on Router Internet Interface

[sreeraj.murali]

Hi,

I am seeing Half Duplex setting negotiated on my Internet Router/VPN Router Outside Interface. Please let me know, if this is really, which i need to worry. I am having GRE Tunnel running to US and Voip phone registered to US Call Server.

GigabitEthernet0/1 is up, line protocol is up
  Hardware is CN Gigabit Ethernet, address is 58f3.9cba.8311 (bia 58f3.9cba.8311                                                                                        )
  Description: LINK_TO_TATA-MUX
  Internet address is 111.93.134.54/30
  MTU 1500 bytes, BW 100000 Kbit/sec, DLY 100 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Half Duplex, 100Mbps, media type is RJ45
  output flow-control is unsupported, input flow-control is unsupported
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input 00:00:00, output 00:00:00, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/75/0/26 (size/max/drops/flushes); Total output drops: 11
  Queueing strategy: Class-based queueing
  Output queue: 0/1000/0 (size/max total/drops)
  5 minute input rate 655000 bits/sec, 107 packets/sec
  5 minute output rate 89000 bits/sec, 61 packets/sec
     10648509 packets input, 2848630719 bytes, 0 no buffer
     Received 5824 broadcasts (0 IP multicasts)
     0 runts, 0 giants, 0 throttles

[Mark Malone]

Hi

This looks like an India Tata ISP link so I would say check with them , some  ISPs use half dup so it may not be an issue , between 2 of your own devices then yes you could have a problem but the ISP may want you to be set that way so its best to confirm with them , changing it to full may render it useless as the ISP may not support that the far end , check before changing is what I would advise when ISP connected as there settings may be like that for a specific reson