09-14-2005 04:17 AM - edited 03-10-2019 01:38 AM
Can someone tell me if it is possible to hard code the interface settings on a 4255 to be 100 mbs full duplex.
I have attempted to modify the modules.conf file but it is not taking. Any help is appreciated, thanks
09-14-2005 06:31 AM
With version 4.1 this is not supported.
With version 5.0 this is configurable under the "configure terminal -> service interface" configuration mode.
09-19-2005 08:38 AM
Does this actually work in v5 though? It doesn't seem to be properly setting dupldex. After making these changes and rebooting the sensor, here is what I see:
88-nsmc-c1(config-int-phy)# show settings
name: Management0/0
-----------------------------------------------
media-type: tx
description:
admin-state: disabled
duplex: full default: auto
speed: 100 default: auto
alt-tcp-reset-interface
# cat /proc/net/cisco/ma0_0.info
Description Intel(R) PRO/100 Network Connection
Driver_Name e100-cids
Driver_Version 2.3.40-cids, Mar 4 2005
PCI_Vendor 0x8086
PCI_Device_ID 0x1209
PCI_Subsystem_Vendor 0x8086
PCI_Subsystem_ID 0x0000
PCI_Revision_ID 0x0010
PCI_Bus 4
PCI_Slot 2
IRQ 16
System_Device_Name ma0_0
Current_HWaddr 00:0F:F7:75:56:CE
Permanent_HWaddr 00:0F:F7:75:56:CE
Part_Number 000000-000
Link N/A
Speed 100
Duplex half
State MGMT_UP
Rx_Packets 10113
Tx_Packets 1858
Rx_Bytes 3684375
Tx_Bytes 262846
Rx_Errors 0
Tx_Errors 0
Rx_Dropped 0
Tx_Dropped 0
Multicast N/A
Collisions 8
Rx_Length_Errors 0
Rx_Over_Errors 0
Rx_CRC_Errors 0
Rx_Frame_Errors 0
Rx_FIFO_Errors 0
Rx_Missed_Errors 0
Tx_Aborted_Errors 0
Tx_Carrier_Errors 0
Tx_FIFO_Errors 0
Tx_Heartbeat_Errors 0
Tx_Window_Errors 0
Rx_TCP_Checksum_Good 0
Rx_TCP_Checksum_Bad 0
Tx_TCP_Checksum_Good 0
Tx_TCP_Checksum_Bad 0
Tx_Abort_Late_Coll 3
Tx_Deferred_Ok 10
Tx_Single_Coll_Ok 8
Tx_Multi_Coll_Ok 0
Rx_Long_Length_Errors 0
Rx_Align_Errors 0
Tx_Flow_Control_Pause 0
Rx_Flow_Control_Pause 0
Rx_Flow_Control_Unsup 0
Tx_TCO_Packets 0
Rx_TCO_Packets 0
Rx_Interrupt_Packets 10172
Perf 0, 0 i/p
TCB Ring Unused TCBs = 0 of 1024 total,cu=SUSPEND
RFD Ring Used RFDs = N/A
Netdev_Queue N/A
MPC Percent 0
09-19-2005 08:42 AM
/etc/modules.conf is [apparently] rebuild on boot.
This is not supported, but here's what we do (v4.x):
make the modificatinos to /etc/modules.conf
mark /etc/modules.conf as immutable (man chattr)
# chattr +i /etc/modules.conf
now reboot and the interface should be whatever you set it to in /etc/modules.conf.
09-19-2005 11:10 AM
Thanks for the info - very useful hint!
We did something similar, though less eloquent. We modified the script /etc/rc.d/rc3.d/S55.cid to prevent it from rewriting /etc/modules.conf every time the sensor was rebooted.
In effect, the same result from a different approach...
Either way though, I suspect Cisco will official declare that such a modification will in essence render the sensor unsupported, as this is an unapproved modification to the underlying OS via the service account, but I digress.
Again, thanks for sharing. I gave it "5 stars"... =)
Alex Arndt
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