RE: MDIX auto

From: Kenneth Wygand (KWygand@customonline.com)
Date: Mon May 24 2004 - 23:33:16 GMT-3


BBD,
 
<snip>
interface FastEthernet1/0/1
 switchport access vlan 151
 no ip address
 speed 100
 mdix auto
</snip>
 
<snip>
When you enable Auto-MDIX on an interface, you must also set the speed and duplex on the interface to auto so that the feature operates correctly.
</snip>
 
Reference: http://www.cisco.com/univercd/cc/td/doc/product/lan/cat3750/12119ea1/3750cr/cli1.htm#2786606
 
Ken

        -----Original Message-----
        From: nobody@groupstudy.com on behalf of wing_lam@jossynergy.com
        Sent: Mon 5/24/2004 10:20 PM
        To: ccielab@groupstudy.com
        Cc:
        Subject: MDIX auto
        
        

        Hi group,
        
        I can configure the 3750 in MDIX auto mode in interface, but I cannot use a
        cross-over cable connect to a notebook, I verified the cable and network
        ports are OK, did my 3750 really supports MDIX auto? I cannot see it
        mentions that it can support in the "show interface capability" command?
        
        Thanks,
        BBD
        
        
        r3701hk#sh run int fas 1/0/1
        Building configuration...
        
        Current configuration : 118 bytes
        !
        interface FastEthernet1/0/1
         switchport access vlan 151
         no ip address
         speed 100
         mdix auto
        end
        
        r3701hk#sh int fas 1/0/1 capabilities
        FastEthernet1/0/1
          Model: WS-C3750-24TS
          Type: 10/100BaseTX
          Speed: 10,100,auto
          Duplex: half,full,auto
          Trunk encap. type: 802.1Q,ISL
          Trunk mode: on,off,desirable,nonegotiate
          Channel: yes
          Broadcast suppression: none
          Flowcontrol: rx-(off,on,desired),tx-(none)
          Fast Start: yes
          QoS scheduling: rx-(not configurable on per port basis),tx-(4q2t)
          CoS rewrite: yes
          ToS rewrite: yes
          UDLD: yes
          Inline power: no
          SPAN: source/destination
          PortSecure: yes
          Dot1x: yes
        
        r3701hk#sh ver
        Cisco Internetwork Operating System Software
        IOS (tm) C3750 Software (C3750-I5-M), Version 12.1(19)EA1a, RELEASE
        SOFTWARE (fc
        1)
        Copyright (c) 1986-2003 by cisco Systems, Inc.
        Compiled Tue 09-Dec-03 04:48 by yenanh
        Image text-base: 0x00003000, data-base: 0x0091CE54
        
        ROM: Bootstrap program is C3750 boot loader
        BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.1(11r)AX, RELEASE
        SOFTWARE
         (fc1)
        
        r3701hk uptime is 4 weeks, 6 days, 19 hours, 0 minutes
        System returned to ROM by power-on
        System image file is
        "flash:c3750-i5-mz.121-19.EA1a/c3750-i5-mz.121-19.EA1a.bin"
        
        
        cisco WS-C3750-24TS (PowerPC405) processor (revision B0) with
        118776K/12288K byt
        es of memory.
        Processor board ID CAT0804X11J
        Last reset from power-on
        Bridging software.
        16 Virtual Ethernet/IEEE 802.3 interface(s)
        16 Virtual Ethernet/IEEE 802.3 interface(s)
        2 Gigabit Ethernet/IEEE 802.3 interface(s)
        The password-recovery mechanism is enabled.
        
        512K bytes of flash-simulated non-volatile configuration memory.
        Base ethernet MAC Address : 00:0F:24:06:78:00
        Motherboard assembly number : 73-7055-06
        Power supply part number : 341-0034-01
        Motherboard serial number : CAT080404R5
        Power supply serial number : DAB080300L4
        Model revision number : B0
        Motherboard revision number : A0
        Model number : WS-C3750-24TS-S
        System serial number : CAT0804X11J
        Hardware Board Revision Number : 0x06
        
        
        Switch Ports Model SW Version SW Image
        ------ ----- ----- ---------- ----------
        * 1 26 WS-C3750-24TS 12.1(19)EA1a C3750-I5-M
        
        
        Configuration register is 0xF
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