Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Unable to Ping Pt2

Hello Experts,

Can someone please tell me what I'm missing here. I have switches connected via eth 1/0, and an SVI's for vlan 200. I have configured svi's 200.1.1.1 255.255.255.252 and 200.1.1.2 255.255.255.252 for DLS2 and ALS2 respectively, however I can't ping from als2 to dls2 and vica versa.

Can someone shed some light on the issue.

Attached are the configs

Cheers

Carlton

17 REPLIES
New Member

Unable to Ping Pt2

Hi Carlton

I see from the config that eth 1/0 on both the switches are shutdown . can you bring up that interface and try?

-Vijay

New Member

Unable to Ping Pt2

Vijay,

Thanks for responding, but are we looking at the configs?

The attached show that eth 1/0 is up up?????

New Member

Unable to Ping Pt2

Vijay

Ethernet1/0            unassigned      YES unset  up                    up 

New Member

Unable to Ping Pt2

Experts,

Here is the show cdp nei details:

ALS2#sh cdp nei detail

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

Device ID: DLS2

Entry address(es):

  IP address: 200.1.1.1

Platform: Linu,  Capabilities: Router Switch

Interface: Ethernet1/0,  Port ID (outgoing port): Ethernet1/0

Holdtime : 147 sec

Version :

Cisco IOS Software, Linux Software (LINUXL2-UPK9-M), Experimental Version 12.2(20100802:165548) [mtimm-mtrosel2iol 102]

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Mon 02-Aug-10 10:05 by mtim

advertisement version: 2

VTP Management Domain: 'switch'

Native VLAN: 200

Management address(es):

  IP address: 200.1.1.1

ALS2#

DLS2#sh cdp nei deta

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

Device ID: DLS1

Entry address(es):

  IP address: 100.1.1.1

Platform: Linu,  Capabilities: Router Switch

Interface: Ethernet2/1,  Port ID (outgoing port): Ethernet2/1

Holdtime : 145 sec

Version :

Cisco IOS Software, Linux Software (LINUXL2-UPK9-M), Experimental Version 12.2(20100802:165548) [mtimm-mtrosel2iol 102]

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Mon 02-Aug-10 10:05 by mtim

advertisement version: 2

VTP Management Domain: 'switch'

Native VLAN: 1

Management address(es):

  IP address: 100.1.1.1

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

Device ID: DLS1

Entry address(es):

  IP address: 100.1.1.1

Platform: Linu,  Capabilities: Router Switch

Interface: Ethernet2/0,  Port ID (outgoing port): Ethernet2/0

Holdtime : 155 sec

Version :

Cisco IOS Software, Linux Software (LINUXL2-UPK9-M), Experimental Version 12.2(20100802:165548) [mtimm-mtrosel2iol 102]

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Mon 02-Aug-10 10:05 by mtim

advertisement version: 2

VTP Management Domain: 'switch'

Management address(es):

  IP address: 100.1.1.1

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

Device ID: ALS2

Entry address(es):

  IP address: 200.1.1.2

Platform: Linu,  Capabilities: Router Switch

Interface: Ethernet1/0,  Port ID (outgoing port): Ethernet1/0

Holdtime : 169 sec

Version :

Cisco IOS Software, Linux Software (LINUXL2-UPK9-M), Experimental Version 12.2(20100802:165548) [mtimm-mtrosel2iol 102]

Copyright (c) 1986-2010 by Cisco Systems, Inc.

Compiled Mon 02-Aug-10 10:05 by mtim

advertisement version: 2

VTP Management Domain: 'switch'

Management address(es):

  IP address: 200.1.1.2

DLS2#

Cheers

New Member

Unable to Ping Pt2

As you can see both routers can see each other via cdp....

Don't understand why als2 can't ping 200.1.1.2  and dls2 can't ping 200.1.1.1

New Member

Unable to Ping Pt2

oh..sorry my bad .. I was referring to eth 0/1 instead of eth 1/0.

I have labbed this up and it works for me

Can you check if your arp tables are proper ??

-Vijay

New Member

Unable to Ping Pt2

How do I check if the arp tables are proper?

Re: Unable to Ping Pt2

To add what Vijay said...

clear arp or clear mac-address-table

Are you doing this on PT or GNS3?  

Your ints look like the ints on howtonetwork.net....they use simulators.  But I could be wrong about the ints.

When you ping what does the debug arp and debup ip icmp show?

New Member

Unable to Ping Pt2

Jimmy,

Very good deduction.

Its howtonetwork.net

New Member

Unable to Ping Pt2

Jimmy

DLS2#ping 200.1.1.2

Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 200.1.1.2, timeout is 2 seconds:

*Mar 27 18:33:22.122: IP ARP: sent req src 200.1.1.1 aabb.cc00.c400,

                 dst 200.1.1.2 0000.0000.0000 Vlan200.

*Mar 27 18:33:24.122: IP ARP: sent req src 200.1.1.1 aabb.cc00.c400,

                 dst 200.1.1.2 0000.0000.0000 Vlan200.

*Mar 27 18:33:26.122: IP ARP: sent req src 200.1.1.1 aabb.cc00.c400,

                 dst 200.1.1.2 0000.0000.0000 Vlan200.

*Mar 27 18:33:28.122: IP ARP: sent req src 200.1.1.1 aabb.cc00.c400,

                 dst 200.1.1.2 0000.0000.0000 Vlan200.

*Mar 27 18:33:30.122: IP ARP: sent req src 200.1.1.1 aabb.cc00.c400,

                 dst 200.1.1.2 0000.0000.0000 Vlan200.

Success rate is 0 percent (0/5)

DLS2#

New Member

Unable to Ping Pt2

Hi guys

I cleared the arp and mac tables

Re: Unable to Ping Pt2

Carlton,

I use them also....we use to have live equipment, then about 3-4 weeks ago they started running Linux emulators for their equipment....and when you have emulators (like Packet Tracer)...there have been times where I take the same exact config on PT (that wont work) and put it on live racks, works no issues. 

I will take your configs tonight and see I have any luck....Vijay already proofed them (you did too probably 48 times , so they are probably correct.

New Member

Unable to Ping Pt2

Jimmy,

We're on the same page.

I have proofed them on GNS and the configs work fine. The problem is with the emulators:

For your information, I have sent the following to Customer Services and the Rack Team at HowToNetwork:

RackTeam,

I recently started a thread on the topic of Rack Limitations. You provided me with an comment which quite frankly is totally incorrect and quite ludicrous. Your statement was "Etherchannel is not supported on switches. Cisco imposed limitation (there are some)"

I think Paul would disagree with you as he wrote a whole lab on Etherchannels between switches, and to be honest you can't truly be a Cisco Engineer to ever say such a thing...

So when I asked what are the limitations of IOU (IOS on Unix) its best to just be straight with your members.

There are two limitations that I found after spending many many hours trying to figure out why I couldn't get the devices to work.

1st limitation; It is not possible to configure routed Etherchannels on the switches.

2nd limitation; it is not possible to pass  traffic between switches that have their interfaces configured for static access rather than trunk mode.

These two limitations have cost me two days of troubleshooting. The reason it has taken me so long to figure this out is because this is networking 101 and I couldn't believe that it wouldn't work.

Some of the credit goes to the clever engineers at cisco forum for help figuring this out.

So, RackTeam, whether these limitations are fixed doesn't bother me but what would be most helpful if you would kindly same me and your members hours, and days of troubleshooting by letting us know what commands aren't supported.

I'm sure there will be new engineers following Paul's brilliant 101 lab book with the new rack solution only to find that they can't perform simple commands on the new rack.

Please help us......

Regards

Re: Unable to Ping Pt2

The racks were awesome before, but due to space limitations/time slots,  I think they went with the other emulators.

BTW....port security does not work either.  

Thanks for the update!

New Member

Re: Unable to Ping Pt2

Port security doesn't work either???? Crap man... Not good

New Member

Re: Unable to Ping Pt2

Hi Jimmy

As you appear familiar with simulators and a member of host network.net I was wondering if you could tell me if it's possible to make a simulation support commands?

The reason why I ask this is because shortly after I complained about not being able to ping suddenly, as if by miracle the commands are support and I can now ping svi's! 

Cheers

Re: Unable to Ping Pt2

Sorry shipmate, no can do.

As far as simulating commands, that is way beyond my level.

I saw your post....excellent rant.  I am going to hang with the site a few more weeks, and if somethings arent fixed, cancel.  We are studying ccnp, and major topics do not work (port security, dhcp snoooping (which then means IP source guard, DAI wont work either), etherchannel, etc).

They might have seen your post and fixed it.....from your debug, the MAC of 0000.0000.0000 might  have helped them....just a guess.

Gooooooooooooooooood luck!

460
Views
0
Helpful
17
Replies
CreatePlease login to create content