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5 Posts
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19863
June 28th, 2004 21:00
Startup problem when more than 5 vlans configured and STP disabled
I have identified a shortcoming the the 5212 FW revision 3.1.0.13 as follows:
The switch has Spanning Tree Disabled (This is necessary as it is connected to an IX which insists on it being disabled in it's AUP) and 24 VLANs configured.
When the switch cold or warm starts, it enters a state when even though all appears normal, it is not forwarding any packets. You can ping the switch on it's management IP, but it refuses to forward packets.
Observations which lead me to thing this is a bug rather than a hardware fault are as follows:
1. If you reduce the number of VLANs in the switch's configuration to 5 or less, the problem goes away. At 6 VLANS the problem re-appears.
2. Also when the switch is in the 'Not Forwarding' mode, if you briefly unplug a the network cable from a port and plug it straight back in again, that prot then starts to forward.
3. If spanning tree is enabled, the switch functions perfectly.
4. if (through the CLI) you briefly issue a spanning-tree, immediately followed by a no spanning-tree -- the switch bursts into life !
Please help -- this is driving me crazy!
Thanks,
Simon
Configuration extract attached below:
!
!
snmp-server community private rw
snmp-server community public ro
!
!
!
vlan database
vlan 1 name PX-SEGMENT media ethernet state active
vlan 2 name DMZ-SEGMENT media ethernet state active
vlan 4 name XPE1-SEGMENT media ethernet state active
vlan 5 name XPE2-SEGMENT media ethernet state active
vlan 500 name NSE-TEST media ethernet state active
vlan 550 name XPE-LONAP media ethernet state active
vlan 612 name AS13005 media ethernet state active
vlan 864 name AS15635 media ethernet state active
vlan 989 name XPE-TEST media ethernet state active
vlan 999 name XPE-PEERING1 media ethernet state active
vlan 1146 name XPE-KPN1 media ethernet state active
vlan 1147 name XPE-GRIFFIN media ethernet state active
vlan 1150 name XPE-TISCALI media ethernet state active
vlan 2047 name AS25396 media ethernet state active
vlan 2069 name AS15435 media ethernet state active
vlan 2112 name AS10310 media ethernet state active
vlan 2114 name AS8068 media ethernet state active
vlan 2141 name AS2082 media ethernet state active
vlan 2178 name AS12859 media ethernet state active
vlan 2192 name AS24851 media ethernet state active
vlan 2244 name AS25463 media ethernet state active
vlan 2312 name AS5588 media ethernet state active
vlan 2322 name AS9191 media ethernet state active
vlan 2490 name AS2818 media ethernet state active
!
!
!
interface ethernet 1/1
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
!
interface ethernet 1/2
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
!
interface ethernet 1/3
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
!
interface ethernet 1/4
description XPE1
no negotiation
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/5
description XPE1A
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/6
description XPE1B
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/7
description XPE2
no negotiation
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/8
description XPE2A
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/9
description XPE2B
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/10
description 10-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
!
interface ethernet 1/11
description 11-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
!
interface ethernet 1/12
description 12-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
!
!
!
interface vlan 1
ip address 217.18.81.130 255.255.255.0
!
ip default-gateway 217.18.81.254
!
!
jumbo frame
!
!
line console
!
!
line vty
!
!
!
no spanning-tree
mac-address-table aging-time 60
!
!
end
!



GregG1
2 Intern
•
812 Posts
0
June 29th, 2004 19:00
I attempted to duplicate the problem using the following:
PowerConnect 5212 - firmware 3.1.0.8 & 3.1.0.15
Startup-Config file:
Console#sh run
building running-config, please wait.....
!
!
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snmp-server community private rw
snmp-server community public ro
!
!
username admin access-level 15
username admin password 7 21232f297a57a5a743894a0e4a801fc3
username guest access-level 0
username guest password 7 084e0343a0486ff05530df6c705c8bb4
enable password level 15 7 1b3231655cebb7a1f783eddf27d254ca
!
!
!
vlan database
vlan 1 name DefaultVlan media ethernet state active
vlan 2 media ethernet state active
vlan 4 media ethernet state active
vlan 5 media ethernet state active
vlan 500 media ethernet state active
vlan 550 media ethernet state active
vlan 612 media ethernet state active
vlan 864 media ethernet state active
vlan 989 media ethernet state active
vlan 999 media ethernet state active
vlan 1146 media ethernet state active
vlan 1147 media ethernet state active
vlan 1150 media ethernet state active
vlan 2047 media ethernet state active
vlan 2069 media ethernet state active
vlan 2112 media ethernet state active
vlan 2114 media ethernet state active
vlan 2141 media ethernet state active
vlan 2178 media ethernet state active
vlan 2192 media ethernet state active
vlan 2244 media ethernet state active
vlan 2312 media ethernet state active
vlan 2322 media ethernet state active
vlan 2490 media ethernet state active
!
!
!
!
!
!
interface ethernet 1/1
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/2
switchport allowed vlan add 612 untagged
switchport native vlan 612
switchport allowed vlan remove 1
!
interface ethernet 1/3
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/4
switchport allowed vlan add 1,4 untagged
switchport native vlan 4
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/5
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/6
switchport allowed vlan add 1,4 untagged
switchport native vlan 4
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
!
interface ethernet 1/7
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/8
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/9
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/10
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/11
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
interface ethernet 1/12
switchport allowed vlan add 1 untagged
switchport native vlan 1
!
!
!
interface vlan 1
ip address 217.18.81.130 255.255.255.0
!
!
!
!
!
!
ip default-gateway 217.18.81.254
!
!
no spanning-tree
mac-address-table aging-time 60
!
!
!
!
!
!
!
!
!
jumbo frame
!
!
line console
!
!
line vty
!
!
!
end
!
Using this configuration, I connected a client to ports 1/2, 1/4, and 1/6. The clients on ports 1/4 and 1/6 could communicate with each other and neither client could communicate with 1/2. I rebooted the switch multiple times and connectivity always returned.
With all of these tagged VLANs, I would assume that these ports are uplinked to other network devices. I would suggest contacting tech support to verify your VLAN configuration and assist you in troubleshooting the problem. In the Americas, call (800) 822-8965 and follow the prompts for Server and PowerConnect.
Simon Talbot
5 Posts
0
June 29th, 2004 20:00
Understood -- But note your own welcome email it says:
"As a new member, we encourage you to participate. Post your toughest questions...."
So I Did !
FYI -- Problem can be easily replicated with the configuration I attached and two PCs, one connected to port 12, and one to port 11, nothing complicated required,
Simon
Simon Talbot
5 Posts
0
June 29th, 2004 20:00
Thanks for that, could you please just confirm one final thing for me, that with the identical configuration to ours loaded, you DO get connectivity problems when the switch is re-loaded/re-booted.
This would be much appreciated and will help when I contact Support,
Thanks,
Simon
GregG1
2 Intern
•
812 Posts
0
June 29th, 2004 20:00
With the configuration I listed I did NOT have any communication problems. However, there is no specific information about what network devices you have, how they are connected, or how you are testing connectivity. We have had many customers using multiple VLANs on the 5212 and 5224 switches and this problem has never been reported before. The problem you are having is most likely related to configuration.
If you have an urgent issue with which you need troubleshooting help, please contact tech support. This message board, like all of the Dell Community Forum boards, is intended for Dell customers to communicate with other Dell customers. Although the Community Forum is moderated by Dell employees, it is intended only as a way for visitors to get answers from other visitors, and not to get answers from Dell. The Forum is not a substitute for contacting Dell support. If you need to contact Dell support, please do so by phone or email.
cooledit
25 Posts
0
June 30th, 2004 09:00
interface ethernet 1/2
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
interface ethernet 1/4
description XPE1
no negotiation
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged (there is no VLAN, 612, 864, or other)
interface ethernet 1/6
description XPE1B
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged (there is no VLAN, 612, 864, or other)
There is no way you should be able communicate between 2-4, 2-6 but both (4-6) should be working
cooledit
25 Posts
0
July 1st, 2004 16:00
hi, guy's who uses the forum
today tested the 5212 with 11 different VLAN's configured following setup
Switch -
Port 8 native VLAN5, VLAN add 500,550,989,999,1146,1147,1150 tagged remove vlan 1
Port 9 Native VLAN5, VLAN add 500,550,989,999,1146,1147,1150 tagged remove vlan 1
Both PC could ping each other no port went into shoutdown no spanning tree configured,
vlan 1 name PX-SEGMENT media ethernet state active
vlan 2 name DMZ-SEGMENT media ethernet state active
vlan 4 name XPE1-SEGMENT media ethernet state active
vlan 5 name XPE2-SEGMENT media ethernet state active
vlan 500 name NSE-TEST media ethernet state active
vlan 550 name XPE-LONAP media ethernet state active
vlan 612 name AS13005 media ethernet state active
vlan 864 name AS15635 media ethernet state active
vlan 989 name XPE-TEST media ethernet state active
vlan 999 name XPE-PEERING1 media ethernet state active
vlan 1146 name XPE-KPN1 media ethernet state active
vlan 1147 name XPE-GRIFFIN media ethernet state active
vlan 1150 name XPE-TISCALI media ethernet state active
vlan 2047 name AS25396 media ethernet state active
vlan 2069 name AS15435 media ethernet state active
vlan 2112 name AS10310 media ethernet state active
vlan 2114 name AS8068 media ethernet state active
vlan 2141 name AS2082 media ethernet state active
vlan 2178 name AS12859 media ethernet state active
vlan 2192 name AS24851 media ethernet state active
vlan 2244 name AS25463 media ethernet state active
vlan 2312 name AS5588 media ethernet state active
vlan 2322 name AS9191 media ethernet state active
vlan 2490 name AS2818 media ethernet state active
Simon Talbot
5 Posts
0
July 1st, 2004 16:00
Could you possibly post the complete config you used for this test please ?
Also, could you confirm that you powered up (cold booted) the switch with the two test PCs attached and powered on, and when the switch came up the machines could ping each other without intervention ?
Thanks,
Simon
cooledit
25 Posts
0
July 1st, 2004 16:00
hi, simon
I know you have an issue here on this one it is the config you have send to one of my technician in Ireland
Emmet, it is the config you have send to him. He will deal with the issue you have tomorrow.
cooledit
25 Posts
0
July 1st, 2004 17:00
sorry forgot some serious info. I was using the Version 3.1.0.13 version of IOS
I have also seen some people coming short when they want to cut and paste in some configuration on the CLI interface 30 lines I've tried that as well and it seems to be a sircomstance of the way the configuration of the interfaces are programmed.
I've also tried to cut & paste 103 lines of data for interface's commands and it worked out well.
there's a few things to be aware of when doing cut and paste a config would look like the following:
vlan database
vlan 1 name PX-SEGMENT media ethernet state active
vlan 2 name DMZ-SEGMENT media ethernet state active
vlan 4 name XPE1-SEGMENT media ethernet state active
vlan 5 name XPE2-SEGMENT media ethernet state active
vlan 500 name NSE-TEST media ethernet state active
vlan 550 name XPE-LONAP media ethernet state active
vlan 612 name AS13005 media ethernet state active
vlan 864 name AS15635 media ethernet state active
vlan 989 name XPE-TEST media ethernet state active
vlan 999 name XPE-PEERING1 media ethernet state active
vlan 1146 name XPE-KPN1 media ethernet state active
vlan 1147 name XPE-GRIFFIN media ethernet state active
vlan 1150 name XPE-TISCALI media ethernet state active
vlan 2047 name AS25396 media ethernet state active
vlan 2069 name AS15435 media ethernet state active
vlan 2112 name AS10310 media ethernet state active
vlan 2114 name AS8068 media ethernet state active
vlan 2141 name AS2082 media ethernet state active
vlan 2178 name AS12859 media ethernet state active
vlan 2192 name AS24851 media ethernet state active
vlan 2244 name AS25463 media ethernet state active
vlan 2312 name AS5588 media ethernet state active
vlan 2322 name AS9191 media ethernet state active
vlan 2490 name AS2818 media ethernet state active
exit
interface ethernet 1/1
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
interface ethernet 1/2
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
interface ethernet 1/3
switchport allowed vlan add 1 untagged
switchport native vlan 1
switchport allowed vlan add 612,864,2047,2069,2112,2114,2141,2178,2192,2244,2312,2322,2490 tagged
interface ethernet 1/4
description XPE1
no negotiation
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/5
description XPE1A
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/6
description XPE1B
switchport allowed vlan add 4 untagged
switchport native vlan 4
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/7
description XPE2
no negotiation
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/8
description XPE2A
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/9
description XPE2B
switchport allowed vlan add 5 untagged
switchport native vlan 5
switchport allowed vlan remove 1
switchport allowed vlan add 500,550,989,999,1146-1147,1150 tagged
interface ethernet 1/10
description 10-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
interface ethernet 1/11
description 11-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
interface ethernet 1/12
description 12-DMZ
switchport allowed vlan add 2 untagged
switchport native vlan 2
switchport allowed vlan remove 1
exit
interface vlan 1
ip address 217.18.81.130 255.255.255.0
exit
ip default-gateway 217.18.81.254
jumbo frame
no spanning-tree
mac-address-table aging-time 60
end
remark it is necessary to exit out of interface's before using global commands. The Dell Switches also does not like !!! marks like the way Cisco does it.
Simon Talbot
5 Posts
0
July 18th, 2004 00:00
This fault has now been verified by Dell Technical Support as a firmware/hardware fault with all revisions of hardware and all firmware versions up to current level on the 5212.
The fault has been escalated by Dell to the product's manufacturer (Acton Technology) for a fix
Thanks all for your suggestions,
Simon
GregG1
2 Intern
•
812 Posts
0
July 20th, 2004 15:00
Correction to the preceding post:
I have verified this issue with our hardware engineers. They were able to duplicate the issue and have escalated the issue to the vendor. The issue was duplicated using hardware revision A02 and software version 3.1.0.15. It has not been confirmed with any other hardware or software revisions.
To date, the vendor has not successfully replicated or confirmed the issue. When the issue is confirmed, tech support will be notified of the specifics and provided with any possible workaround. If you are experiencing this issue, please contact tech support in your region so that your issue may be tracked properly and a fix may be provided to you when available.