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Cisco 7206 Fa int - no auto duplex support?

I'm stuck... I have a Cisco 7206 (non VXR w/ NPE225) and a Comcast SMC business cable modem... I'm using the 7206 for NAT and GRE tunnels. (In lan testing, with a 'virtual' cable modem link all was great, then I plug in the real thing and I'm having duplex issues....)  The issue is I want the cable modem to connect to the 7206, but the Cisco side only supports duplex half OR full, NO AUTO duplex or speed settings, no negotiate, etc.  The SMC is supposed to support manual duplex/speed settings --- but when left auto it goes to 100/half, and when set 100/full manually, I get no link.  I have yet to test the 100/full connecting to another switch, etc.  I so suspect the 7200 is the core issue  One possible solution is getting a 'desktop switch' and connecting the two together via that - some managed switch where I can set 100/full on the cisco side and let auto on the CM side.  Any suggestions there?  (cheap, managed, 100M is fine)

Anyway, the real question here is ... what happened to the FastE RJ45 duplex support on the 7200 series?  Any workarounds, upgrades (new PA) to get it to work??  IOS revisions that DO support it?

None of the ports support it, here's my info:

ER02#sh diag | i FE   
        FRU Part Number     C7200-IO-FE-MII/RJ
        FRU Part Number     PA-2FEISL-TX=    
        FRU Part Number     PA-2FEISL-TX=    
ER02#sh ver | i bin   
System image file is "disk0:c7200-advipservicesk9-mz.124-24.T2.bin"

All interfaces:

ER02(config-if)#duplex ?
  full  Force full duplex operation
  half  Force half-duplex operation



Everyone's tags (3)

Re: Cisco 7206 Fa int - no auto duplex support?

Hi Shawn

Can you try using the "negotiation auto" command instead of individual speed/duplex settings ? This should make it work..

this is what i saw in CCO:

"The negotiation command is applicable to the Gigabit Ethernet interface of the Cisco 7200-I/O-GE+E and interfaces on the 2-port 10/100/1000 Gigabit Ethernet SPA that are using fiber media. The negotiation auto command is used instead of the duplex and speed commands (which are used on Ethernet and Fast Ethernet interfaces, and interfaces on the 2-port 10/100/1000 Gigabit Ethernet SPA that are using RJ-45 media) to automatically configure the duplex and speed settings of the interfaces."

Hope this helps.. all the best..



Re: Cisco 7206 Fa int - no auto duplex support?


Possibly GigE cards would support, but they are expensive and overkill for my application.

I'm wondering if it's an IOS thing, or what my other options are.  Tomorrow I'm going to try a couple hacks, but I really want a direct CM->router connection ideally.  I have a second CM connected to a 3700 with auto capabilities, working fine.



- Shawn

Interface configuration commands:
  access-expression       Build a bridge boolean access expression
  arp                     Set arp type (arpa, probe, snap) or timeout or log
  ase                     Configure ASE on an interface
  auto                    Configure Automation
  backup                  Modify backup parameters
  bandwidth               Set bandwidth informational parameter
  bfd                     BFD interface configuration commands
  bgp-policy              Apply policy propagated by bgp community string
  bridge-group            Transparent bridging interface parameters
  carrier-delay           Specify delay for interface transitions
  cdp                     CDP interface subcommands
  channel-group           Add this interface to an Etherchannel group
  clns                    CLNS interface subcommands
  cmns                    OSI CMNS
  crypto                  Encryption/Decryption commands
  custom-queue-list       Assign a custom queue list to an interface
  dampening               Enable event dampening
  default                 Set a command to its defaults
  delay                   Specify interface throughput delay
  description             Interface specific description
  dot1q                   dot1q interface configuration commands
  duplex                  Configure duplex operation.
  eigrp                   EIGRP interface specific commands
  eou                     EAPoUDP Interface Configuration Commands
  ethernet                Ethernet interface parameters
  exit                    Exit from interface configuration mode
  fair-queue              Enable Fair Queuing on an Interface
  fallback-pool           Use auxiliary pool when private pool is exhausted
  flow-sampler            Attach flow sampler to the interface
  forwarding              forwarding commands
  full-duplex             Configure full-duplex operational mode
  glbp                    Gateway Load Balancing Protocol interface commands
  h323                    Configure H323 Multimedia Proxy
  h323-gateway            Configure H323 Gateway
  half-duplex             Configure half-duplex and related commands
  help                    Description of the interactive help system
  hold-queue              Set hold queue depth
  ip                      Interface Internet Protocol config commands
  iphc-profile            Configure IPHC profile
  ipv6                    IPv6 interface subcommands
  isis                    IS-IS commands
  iso-igrp                ISO-IGRP interface subcommands
  keepalive               Enable keepalive
  llc2                    LLC2 Interface Subcommands
  load-interval           Specify interval for load calculation for an
  logging                 Configure logging for interface
  loopback                Configure internal loopback on an interface
  mac-address             Manually set interface MAC address
  max-reserved-bandwidth  Maximum Reservable Bandwidth on an Interface
  mop                     DEC MOP server commands
  mpls                    Configure MPLS interface parameters
  netbios                 Use a defined NETBIOS access list or enable
  no                      Negate a command or set its defaults
  ntp                     Configure NTP
  pppoe                   pppoe interface subcommands
  pppoe-client            pppoe client
  priority-group          Assign a priority group to an interface
  random-detect           Enable Weighted Random Early Detection (WRED) on an
  rate-limit              Rate Limit
  rmon                    Configure Remote Monitoring on an interface
  routing                 Per-interface routing configuration
  service-policy          Configure QoS Service Policy
  shutdown                Shutdown the selected interface
  snapshot                Configure snapshot support on the interface
  snmp                    Modify SNMP interface parameters
  source                  Get config from another source
  standby                 HSRP interface configuration commands
  tarp                    TARP interface subcommands
  timeout                 Define timeout values for this interface
  traffic-shape           Enable Traffic Shaping on an Interface or
  transmit-interface      Assign a transmit interface to a receive-only
  tx-ring-limit           Configure PA level transmit ring limit
  vlan-id                 Process VLAN-encapsulated packets with a specific
                          VLAN ID
  vlan-range              Process VLAN-encapsulated packets with a range of
                          VLAN IDs
  vrf                     VPN Routing/Forwarding parameters on the interface
  vrrp                    VRRP Interface configuration commands
  xconnect                Xconnect commands
  zone-member             Apply zone name


Re: Cisco 7206 Fa int - no auto duplex support?

  If remember right some of those cards did not set to auto on the old 7200's . 

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