cisco 2516 with hub ethernet ports

ilusionns
ilusionns used Ask the Experts™
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fellows,
i have amy own ccie lab. one of my back bone router is  2516-J , having 1 etehrnet port and 14 ethernet hub ports.
when i do sh ver. it shows me 14 hub ethernet ports and 1 ethernet ports. but i dont see any separate  ethernet ports on the router. i just see 14 etherrnet ports.

and that ports shows up when i run  " sh ip int brief " . even if i unplug the  network cable ( cable is connected on port 1 of those 14 eth hub ports.


switchport which is connected to this is showing me "not connect " status

please advice.



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John MeggersNetwork Architect

Commented:
Don't know for sure but my guess is the 14 Ethernet ports are physical ports for cable connections, and the other Ethernet is an internal port where you configure what amounts to a VLAN interface.  I don't see a configuration guide specific to the 2516.  Until you get into the NM switch modules, I don't think you could put different physical ports into different VLANs.

Author

Commented:
i am just  having only 1 vlan  and 1 physical connection to switch.
Don JohnstonInstructor
Top Expert 2015

Commented:
If memory serves, the "ethernet" port is a virtual port that the 14 hub ethernet ports are connected to.  There is no physical connector for e0. Only "hub ether" 0 1-4.
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Author

Commented:
i am connected with eth 1 ( one of 14 hub ports. )
Don JohnstonInstructor
Top Expert 2015

Commented:
Please post the config.
pls paste

sh verstion

Sh Diag
&
Sh ip int brief

Author

Commented:
RS.1.1.BB3#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
BRI0                       unassigned      YES NVRAM  administratively down down    
BRI0:1                     unassigned      YES unset  administratively down down    
BRI0:2                     unassigned      YES unset  administratively down down    
Ethernet0                  204.12.1.254    YES NVRAM  up                    up      
Loopback0                  28.119.16.1     YES NVRAM  up                    up      
Loopback1                  28.119.17.1     YES NVRAM  up                    up      
Loopback10                 30.0.0.1        YES NVRAM  up                    up      
Loopback11                 30.1.0.1        YES NVRAM  up                    up      
Loopback12                 30.2.0.1        YES NVRAM  up                    up      
Loopback13                 30.3.0.1        YES NVRAM  up                    up      
Loopback14                 31.0.0.1        YES NVRAM  up                    up      
Loopback15                 31.1.0.1        YES NVRAM  up                    up      
Loopback16                 31.2.0.1        YES NVRAM  up                    up      
Loopback17                 31.3.0.1        YES NVRAM  up                    up      
Serial0                    172.16.4.3      YES NVRAM  down                  down    
Serial1                    unassigned      YES NVRAM  administratively down down    
RS.1.1.BB3#
---------------------------------------------------------------------
RS.1.1.BB3#sh ver
Cisco Internetwork Operating System Software
IOS (tm) 2500 Software (C2500-JS-L), Version 12.2(24a), RELEASE SOFTWARE (fc3)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Fri 28-May-04 19:30 by pwade
Image text-base: 0x0307D2F8, data-base: 0x00001000

ROM: System Bootstrap, Version 11.0(10c)XB2, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1)
BOOTLDR: 3000 Bootstrap Software (IGS-BOOT-R), Version 11.0(10c)XB2, PLATFORM SPECIFIC RELEASE SOFTWARE (fc1)

RS.1.1.BB3 uptime is 12 minutes
System returned to ROM by power-on
System image file is "flash:c2500-js-l.122-24a.bin"

cisco 2516 (68030) processor (revision J) with 14336K/2048K bytes of memory.
Processor board ID 24221536, with hardware revision 00000001
Bridging software.
X.25 software, Version 3.0.0.
SuperLAT software (copyright 1990 by Meridian Technology Corp).
TN3270 Emulation software.
Basic Rate ISDN software, Version 1.1.
1 Ethernet/IEEE 802.3 interface(s)
14 Ethernet/IEEE 802.3 repeater port(s)
2 Serial network interface(s)
1 ISDN Basic Rate interface(s)
32K bytes of non-volatile configuration memory.
16384K bytes of processor board System flash (Read ONLY)

Configuration register is 0x2102

RS.1.1.BB3#

-------------------------------------------------------------------------------

Author

Commented:
fellows,
it seems like my eth0 port is working . i connect this to my home linksys router by giving 192.168.1.199/24 and it is working .  fine .

i tried to change port on  switch 3560 still its not coming up. i am in a way to upgrade code to c2500-is-l.122-15.t17. will update the forum accordingly.

Author

Commented:
still got the same problem  even after upgrading the code.

Author

Commented:
alright i got the latest update.

i have 2 cisco 3560 and 2 cisco 3550.
the BB-3 router is coming online only on cisco 3560 either one. but not coming online whne i plug on any of cisco 3550.

please advice.
Don JohnstonInstructor
Top Expert 2015

Commented:
Are you using a known good crossover cable?

Author

Commented:
I am using a regular straight  cable
Don JohnstonInstructor
Top Expert 2015

Commented:
Well there's your problem.  :-)

You need a crossover.

Author

Commented:
Same cable worked for 3560
Instructor
Top Expert 2015
Commented:
Then use the 3560.

But if you want to use the 3550, you'll need a crossover.

Author

Commented:
yes changing cable to cross over worked for me . but i still dont understand why we ned cross over for 3550 and starigth cable for 3560.

Author

Commented:
using cross over cable solution worked for me . still curious why my straight through cable didnt work with cisco 3550.
Don JohnstonInstructor
Top Expert 2015

Commented:
The 3550's don't do auto MDX.  3560's do.

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