12-11-2008 03:27 AM
I connect GSS into network via using UTP cable, both ends show down, even I change the configure to full duplex and 1000 speed, they don't go up. here is the configure of both ends:
GSS end:
GSS#sh run
interface ethernet 0
ip address 10.1.1.2 255.255.255.0
gss-communications
duplex full
speed 1000
interface ethernet 1
ip address 10.1.1.1 255.255.255.0
duplex full
speed 1000
--------------------
GSS#sh int eth0
Interface eth0
ip address 10.122.90.62 255.255.255.0
gss-communications
duplex full
speed 1000
Interface State
Link is down
Supported modes: 10-half, 10-full, 100-half, 100-full, 1000-half, 1000-full
Advertised modes:
Interface statistics
eth0 Link encap:Ethernet HWaddr 00:1E:68:0F:AD:C7
inet addr:10.x.x.1 Bcast:10.x.x.255 Mask:255.255.255.0
inet6 addr: fe80::21e:68ff:fe0f:adc7/64 Scope:Link
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)
Interrupt:177
switch end:
switch#sh run int g4/48
!
interface GigabitEthernet4/48
switchport
switchport access vlan 9
switchport mode access
no ip address
speed 1000
duplex full
spanning-tree portfast
end
SWITCH#sh int g4/48
GigabitEthernet4/48 is down, line protocol is down (notconnect)
Hardware is C6k 1000Mb 802.3, address is 001d.70b1.aa6f (bia 001d.70b1.aa6f)
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 0/255, rxload 0/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s
input flow-control is off, output flow-control is off
Clock mode is auto
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:16:26, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
41 packets input, 3649 bytes, 0 no buffer
Received 32 broadcasts (7 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 0 multicast, 0 pause input
0 input packets with dribble condition detected
295 packets output, 25513 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 PAUSE output
0 output buffer failures, 0 output buffers swapped out
I thought it was cable problem, i used my laptop connect to the switch with same cable, it wokred. can someone help me on this? thanks!
Solved! Go to Solution.
12-11-2008 04:52 PM
Hi,
Refer this Bug
CSCsf17052-When a GSS is connected to a CAT6500 and both the devices are hard set to 1000/full, the Ethernet link does not come up. If you set the GSS to auto speed/duplex, the link does come up and remains up even after you change the interface configuration back to 1000/full. This is not ideal behavior because once the cable is unplugged/plugged, the link will again go down and remain down as both devices are set to 1000/full.
Workaround: Set both devices to autonegotiate
12-12-2008 02:07 AM
GSS uses linux API (ethtool) to set speed/duplex value of interface. Ethool internally communicate to the NIC (network interface card) driver and alter the speed/duplex value. NIC driver comes with every NIC.
Different GSS hardware uses different NIC and different driver. All these NIC driver works fine to set speed/duplex value of interface with 10/FULL, 100/FULL. But works differently for 1000/FULL.
The different behaviors are listed below for different hardware
4480 : This device does not support 1000 Mbps with full duplex operation.
4490 : No change. Keep old value
4491 : Go to autonegotiation mode
4492 : Go to 10 Mbit, full duplex
Only 4491 hardware provides the support for 1000/FULL
For more info pls see the following bug
CSCsf17052 : GSS 4492 Interface will not link when speed/duplex are hard set.
12-11-2008 04:52 PM
Hi,
Refer this Bug
CSCsf17052-When a GSS is connected to a CAT6500 and both the devices are hard set to 1000/full, the Ethernet link does not come up. If you set the GSS to auto speed/duplex, the link does come up and remains up even after you change the interface configuration back to 1000/full. This is not ideal behavior because once the cable is unplugged/plugged, the link will again go down and remain down as both devices are set to 1000/full.
Workaround: Set both devices to autonegotiate
12-11-2008 06:41 PM
thanks. I will change the configure and let you know the result later.
12-12-2008 02:07 AM
GSS uses linux API (ethtool) to set speed/duplex value of interface. Ethool internally communicate to the NIC (network interface card) driver and alter the speed/duplex value. NIC driver comes with every NIC.
Different GSS hardware uses different NIC and different driver. All these NIC driver works fine to set speed/duplex value of interface with 10/FULL, 100/FULL. But works differently for 1000/FULL.
The different behaviors are listed below for different hardware
4480 : This device does not support 1000 Mbps with full duplex operation.
4490 : No change. Keep old value
4491 : Go to autonegotiation mode
4492 : Go to 10 Mbit, full duplex
Only 4491 hardware provides the support for 1000/FULL
For more info pls see the following bug
CSCsf17052 : GSS 4492 Interface will not link when speed/duplex are hard set.
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