Stacking with Cisco Blade Switches

Hi,
We have a HP p-class Blade System with two Cisco Gigabit Ethernet Switch Modules (Cisco IOS Release 12.2(25)SE) for every enclosure. My question is how I can stack the two blade switches (in the same enclosure) so that every HP blade server to be connected with the two switches in the active/standby state? In other words, can and how I make a port-channel which includes ports from the two switches?
Unfortunately I couldn't found any documentation for the purpose.

Hi,
With the CGESM switches you have you cannot use 802.3ad teaming against the two blade switches. This is possible with the Cisco 3120 blade switches for HP c-class.
Now, in your case, you can use standard Active/Standby NIC teaming, where the active NIC of each server connects to one switch and the standby NIC connects to the other switch. Should a blade switch completely fail, all of the servers with their active NIC connected to the failed switch should see the link go down and switch over to the standby NIC on the second switch. This should work very well.
One problem that can happen however is that the blade switch itself does not completely fail. Instead maybe the blade switch uplink fails, or the upstream switch it is connected to fails. In this situation the server NIC does not experience a failure and continues to send traffic to the blade switch that does not have anywhere to send the traffic, a black hole. This is perhaps the problem you are seeing?
The fortunate thing is that Cisco has a solution to this problem called Trunk Failover with Link State Tracking. What this allows you to do is to tell the blade switch that if it experiences a failure on its uplinks that it should also bring down the links to the servers as well. This will cause the servers to see a failure on their active NIC and perform a switchover to the second blade switch.
I looked up your switch and found that your 12.2(25)SE1 code does not support this feature. You will need to upgrade to 12.2(25)SEE4 and you will be able to configure this on your switches.
Here is a link to see how this configuration works:
http://www.cisco.com/en/US/docs/switches/blades/3020/software/release/12.2_25_sef1/configuration/guide/swethchl.html#wp1346176
Hope this helps.
If so please rate my posts.
Thanks,
Brad

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speed 1000
^
% Invalid input detected at '^' marker.
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Checked that olso,ports are 10/100/1000/auto Base-TX with half/full/auto duplex, so it seems that it is not an issue. I am getting this problem after this communicate:
cisco 371098-001 (PowerPC405) processor (revision B0) with 118784K/12280K bytes
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Maybe there the answer lays. Do You know what is happeing then?

Connecting 2 3750 Switches in Stack with 2 2960 switches in full Mesh

Hi Friends,
I have attached a pics which DC design of one of our customer , as network engineer i have design this , so i am responsible for implementing it, now request you all to kindly guide me what would be technical problem i have to face in achieving this and how can i over come .Please be in detail. Waiting for your response .
Regards
Amit Kulshrestha

I have attached modified diagram , please suggest.
The major issue I see is that you have not mentioned whether the 2960's are stacked? For the design to work, they need to be stacked because you cannot create port-channels between them and the Core switches unless then 2960's are stacked.
==> You are right , surely 2960 Switch need to be in stack form.
Personally I would look at more powerful switches than the 2960's, something along the lines of the 3750x range or probably now the 3850's.
==> This is constrain of customer, not our responsibility.
The second issue I see is that your servers are connected to the WAN switches. Is there a reason for this? Usually they would be connected to the core switches.
==> For this If 1 separate 2960 series switch can be used ?.
The final point is that you only have single connections from each of your WAN connections which begs the question as to the purpose of having two WAN switches?
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==> Customer has agreed to have manual change at the time of failure.

IPad and iPhone Intermittent WiFi with Cisco

I have around 35 iPhones and iPads that are at best intermittent with our internal wireless network. I have been working with Cisco for two days and they are unable to resolve the issue. The WiFi works perfectly with our notebooks so it is definetly narrowed down to the Apple hardware needing a special configuration other than the ones we have tried.
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Here is the general config:
Cisco based wireless using no encryption. I will eventaully need to go WPA2 but for troubleshooting I have tried it as open. I am not broadcasting SSID. I CAN connect to WiFi network and receive IP, Gateway, DNS, and Domain Name consistently. I CANNOT access the Internet consistently. This is a business network with Cisco Catalyst Switches, Routers, and Firewalls. Again, the laptops that connect using WiFi are working as intended,
Does Apple have publicly accessible engineers for these situations? I have left the case open with Cisco in order to provide as much information as possible to Apple.
Thanks for any suggestions.

Internally I am not blocking any traffic. I have over 100 other Windows devices, cameras and printers on this single subnet. I'm not using any other Apple hardware at this time so I'm not sure what the Bonjour will do for me that TCP/IP can't do. I am also not using Bonjour at either of the homes I have done other testing on.
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For a lot of people, it is not neccessary. I used to ask myself that question until I came across a need for things that iLife and the Finder would not do.
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Hi Everyone
I had new case with Cisco Content Switching design. The current network has two Cisco Content Module (CSM) and each of them response for switching content on one Vlan.
Now i want to reconfigure it, to meet the redundancy requirement. But i don't know Cisco Content Module have same idea of design with ACE on Route Mode.
I want configure CSM with two or more vlan pair in routed mode and it can HA between each other.
Thanks
Phai La Quy

Hi Phai,
Yes you can configure CSM in routed mode with clients in one VLAN and server in another. Pasting the link for your reference. You can find more in routing and switching guide.
http://www.cisco.com/c/en/us/support/docs/interfaces-modules/content-switching-module/26220-csm-config.html
Regards,
Kanwal

How to count/determine downtime of Cisco 6500 switch?

Hello,
I work with cisco 6500 switches. now we need to evaluate the down time of all switces. now we using cacti to query system information to switches using SNMP, but some times cacti didnt get the data because of high cpu in switch so the switch stop di SNMP service. because of that, the data in Cacti not valid to determine our switch Downtime.
Is there any tools or ather way to monitor Cisco switch downtime??
Thanks a lot.

just like a reminding system. it can be send an email or some message.
EEM can be configured to send someone an email when some kind of "event" is triggered, such as an uplink goes DOWN/UP.
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Challenge: Spanning Tree Control Between 2 links from Switch DELL M6220 to 2 links towards 2 switches CISCO 3750 connected with an stack (behavior like one switch for redundancy)

Hello,
I have an Spanning tree problem when i conect 2 links from Switch DELL M6220 (there are blades to virtual machines too) to 2 links towards 2 switches CISCO 3750 connected with an stack (behavior like one switch for redundancy, with one IP of management)
In dell virtual machine is Spanning tree rapid stp, and in 3750 is Spanning tree mode pvst, cisco says that this is not important, only is longer time to create the tree.
I dont know but do you like this solutions i want to try on sunday?:
Could Spanning tree needs to work to send one native vlan to negociate the bdpus? switchport trunk native vlan 250
Is it better to put spanning-tree guard root in both 3750 in the ports to mitigate DELL to be root in Spanning Tree?
Is it better to put spanning- tree port-priority in the ports of Swicht Dell?
¿could you help me to control the root? ¿Do you think its better another solution? thanks!
CONFIG WITH PROBLEM
======================
3750: (the 2 ports are of 2 switches 3750s conected with a stack cable, in a show run you can see this)
interface GigabitEthernet2/0/28
description VIRTUAL SNMP2
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 4,13,88,250
switchport mode trunk
switchport nonegotiate
logging event trunk-status
shutdown
interface GigabitEthernet1/0/43
description VIRTUAL SNMP1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 4,13,88,250
switchport mode trunk
switchport nonegotiate
shutdown
DELL M6220: (its only one swith)
interface Gi3/0/19
switchport mode trunk
switchport trunk allowed vlan 4,13,88,250
exit
interface Gi4/0/19
switchport mode trunk
switchport trunk allowed vlan 4,13,88,250
exit

F.Y.I for catylyst heroes - here is the equivalent config for SG-300 - Vlan1 is required on the allowed list on the catylyst side (3xxx/4xxx/6xxx)
In this example:
VLANS - Voice on 188, data on 57, management on 56.
conf t
hostname XXX-VOICE-SWXX
no passwords complexity enable
username xxxx priv 15 password XXXXX
enable password xxxxxx
ip ssh server
ip telnet server
crypto key generate rsa
macro auto disabled
voice vlan state auto-enabled !(otherwise one switch controls your voice vlan….)
vlan 56,57,188
voice vlan id 188
int vlan 56
ip address 10.230.56.12 255.255.255.0
int vlan1
no ip add dhcp
ip default-gateway 10.230.56.1
interface range GE1 - 2
switchport mode trunk
channel-group 1 mode auto
int range fa1 - 24
switchport mode trunk
switchport trunk allowed vlan add 188
switchport trunk native vlan 57
qos advanced
qos advanced ports-trusted
exit
int Po1
switchport trunk allowed vlan add 56,57,188
switchport trunk native vlan 1
do sh interfaces switchport po1
!CATYLYST SIDE
!Must Explicitly allow VLan1, this is not normal for catalysts - or spanning tree will not work ! Even though it’s the native vlan on both sides.
interface Port-channel1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,56,57,189
switchport mode trunk

Cisco 3020 Blade Switch gecrashed

Hi,
One of our Blade switches has crashed, error log as follows,
*Mar 1 05:31:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan550, changed state to up
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: System previously crashed with the following message:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Cisco IOS Software, CBS30X0 Software (CBS30X0-LANBASE-M), Version 12.2(25)SEF1, RELEASE SOFTWARE (fc3)
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Copyright (c) 1986-2006 by Cisco Systems, Inc.
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Compiled Tue 23-May-06 15:26 by antonino
.Dec 26 22:21:20: %PLATFORM-1-CRASHED:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Program Exception (0x0700)!
.Dec 26 22:21:20: %PLATFORM-1-CRASHED:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: SRR0 = 0x003C38AC SRR1 = 0x00029210 SRR2 = 0x00451BDC SRR3 = 0x00021200
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: ESR = 0x08000000 DEAR = 0x00000000 TSR = 0x84000000 DBSR = 0x00000000
.Dec 26 22:21:20: %PLATFORM-1-CRASHED:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: CPU Register Context:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Vector = 0x00000700 PC = 0x003C38AC MSR = 0x00029210 CR = 0x20000008
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: LR = 0x003C38A4 CTR = 0x0027C814 XER = 0x60000020
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R0 = 0x003C38A4 R1 = 0x014D6650 R2 = 0x00000000 R3 = 0x00000004
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R4 = 0x013A1E60 R5 = 0x00000001 R6 = 0x00433EDC R7 = 0x00000004
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R8 = 0x00029210 R9 = 0x00000002 R10 = 0x01220000 R11 = 0x00F60000
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R12 = 0x0070D567 R13 = 0x00110000 R14 = 0x00000002 R15 = 0x00000000
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R16 = 0x00000000 R17 = 0x00000000 R18 = 0x01220000 R19 = 0x01220000
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R20 = 0x00F0CF5C R21 = 0x012D27D0 R22 = 0x01220000 R23 = 0x0187F530
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R24 = 0x00000000 R25 = 0x0004073F R26 = 0x01220000 R27 = 0xEF180E50
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: R28 = 0xEF19007A R29 = 0x00000000 R30 = 0x01220000 R31 = 0x00000000
.Dec 26 22:21:20: %PLATFORM-1-CRASHED:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Stack trace:
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: PC = 0x003C38AC, SP = 0x014D6650
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 00: SP = 0x014D6678    PC = 0x003C38A4
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 01: SP = 0x014D6680    PC = 0x003C3964
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 02: SP = 0x014D66A0    PC = 0x004B97AC
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 03: SP = 0x0126264C    PC = 0x00451060
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 04: SP = 0x0126265C    PC = 0x00451008
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 05: SP = 0x0126267C    PC = 0x0045342C
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 06: SP = 0x01262684    PC = 0x004538F8
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 07: SP = 0x012626D0    PC = 0x00451110
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 08: SP = 0x0187F298    PC = 0x0000D3CC
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 09: SP = 0x0187F2A0    PC = 0x002659D8
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 10: SP = 0x0187F4D0    PC = 0x00423870
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 11: SP = 0x0187F4E8    PC = 0x00AAF21C
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 12: SP = 0x0187F528    PC = 0x006C9400
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 13: SP = 0x0187F5F8    PC = 0x006C8E04
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 14: SP = 0x0187F610    PC = 0x006C8A64
.Dec 26 22:21:20: %PLATFORM-1-CRASHED: Frame 15: SP = 0x0187F638    PC = 0x006C848C
.Dec 26 22:21:20: %PLATFORM-1-CRASHED:
Dec 27 09:10:14: %SYS-5-CONFIG_I: Configured from console by vty0 (172.22.25.22)
Please help to fixed this issue,
Asa,

Signal = 4, Vector = 0x700
Thank you very much for the output. They were very helpful.
Here's the story, the blade has been crashing because of the error "Signal = 4". I have never seen something like this so the only thing I can tell you is that this is a code that simply means "Illegal Opcode Exception". It could mean that you are running an old IOS and you're hitting a bug.
You can contact Cisco TAC and get them to analyze the crashinfo files. You can put this thread into the TAC Case so you don't need to repeat your story all over again.

Is it possible to get logs from a 3850 Cisco member switch in a stack?

%STACKMGR-1-STACK_LINK_CHANGE: MEMBER: 4 stack-mgr: Stack port 2 on switch 4 is down
%STACKMGR-1-STACK_LINK_CHANGE: STANDBY:2 stack-mgr: Stack port 1 on switch 2 is down (OC-SWTCH)
%STACKMGR-6-SWITCH_REMOVED: STANDBY:2 stack-mgr: Switch 3 has been removed from the stack.
I recieved errors on a 3850 switch 3 in my stack, it's removed from my stack and after 5 minutes it comes back up. I want to know what the switch was doing for those 5 minutes, is it possible to get the log files for only switch 3? Telneting to the switch stack or connecting a console cable directly to switch 3 only gives me the logs for master switch logs. Ideally when a switch reconnects to a stack, the master switch should ask the joining switch for it's logs, and merge them into it's own logs so it has a record of the switch did when it wasn't communitating.

HI,
create a internal with type of the structure and populate values into that n do wat ever u want.
ex:
data: itab type zstruct occurs 0 with header line. // where zstruct is a structure in a database.
select * from .............. into table itab where ...............
loop at itab.
write:/10 itab-fld1,
20 itab-fld2,
endloop.
if helpful reward some points.
with regards,
suresh aluri.

Trouble with Windows7 and Gigabit link on Cisco 3560X switch

Hello,
In my company, we are using Cisco IP Phones 7945G (with 2 gigabit network ports) and Cisco 3560X-48P (1GB ports) switches for our users.
Our client computers are running on Windows 7 SP1 (64bit - Enterprise edition) and are connected behind the IP Phone. We use a "Boradcom
Xtreme Gigabit" onboard network card on the computers. All ports (on the switch site and IP Phone side) and on the network card of the computer are configured in "auto negotiation". Duplex and speed are set to "auto".
We tried now to deploy a new engineering software and we are facing a very strange problem. This means that the engineer software fails to download some files from the server. We are using a flat network, all the servers and computers are on the same network segment with no firewall inbetween.
The firewall and Anti-virus on the computers are configured to allow all incoming/outing connections.
To troubleshoot, I tried to change all the network cables but I still get same result --> download fails.
I connected the client computer directly to the Cisco 3560X switch, without the IP Phone and I get the same result.
I installed a separate network card from INTEL (Intel PRO1000 PT) but I get the same result.
As last test, I have connected to same client computer directly to a Cisco 2960-8TC switch (100Mbit; auto negotiate) and here is working fine. The software successfully downloads all the files from the server.
If I connect the computer behind the Cisco 7945 IP Phone, set the speed and duplex of the PC-Port on the Cisco IP Phone 7945G to "100MBit/full duplex" is also working fine.
Is there any know issue with Windows7 and Gigabit network connections?
Do I need to set any Registry key on my Windows 7?
The firmware version of my Cisco 3560X-48P switch is 12.2(53)SE2; do I need to update it?
The firmware version of the IP Phone 7945G is 9.2.1.
Thanks in advanced for your help.
Marc Hoffmann

Hello, Thanks for your answers. First of all, I have updated the firmware of my Cisco Catalyst 3560X-48P switch to the version 12.2(55)SE5. Unfortunately, this did not solve my problem. As second step, I ran an TDR test on my 3560X switch but I do not get any result. The "Pair status" always says "not completed". Even if I wait for 5 minutes, the status remains at "Not completed". Am I doing something wrong ? To do the TDR test, I use the commande "test cable-diagnostics tdr interface gigabitEthernet 0/XY". For your information, the port gigabitEthernet 0/XY is in a "Connected" status when I run the "show int status" command. Jeff, I think there is no issue on the server side, because if I connect my workstation on a 100MB switch (example Cisco Catalyst 2960-8TC-L) the application works absolutely fine. Also, if I run the application locally on the server, it works fine. As next step, I will connect the workstation directly on our backbone switch and try the same test. Is there perhaps any Registry key in our Windows7 which could cause this trouble? If you have any other ideas or options, please let me know. Thanks a lot, Marc Hoffmann

NTP Service on Domain Controller have problem with cisco switch

Hello!
I have Windows Server 2008 R2 SP1 Domain Controller with NTP services
The windows opertion system clients get NTP time ok.
There are problem with cisco switch, can't get time from NTP.
Can anybody help me to fix problem?
C:\Users\Sysuser>w32tm /query /configuration
[Configuration]
EventLogFlags: 2 (Local)
AnnounceFlags: 5 (Local)
TimeJumpAuditOffset: 28800 (Local)
MinPollInterval: 6 (Local)
MaxPollInterval: 10 (Local)
MaxNegPhaseCorrection: 1800 (Local)
MaxPosPhaseCorrection: 1800 (Local)
MaxAllowedPhaseOffset: 300 (Local)
FrequencyCorrectRate: 4 (Local)
PollAdjustFactor: 5 (Local)
LargePhaseOffset: 50000000 (Local)
SpikeWatchPeriod: 900 (Local)
LocalClockDispersion: 10 (Local)
HoldPeriod: 5 (Local)
PhaseCorrectRate: 7 (Local)
UpdateInterval: 100 (Local)
[TimeProviders]
NtpClient (Local)
DllName: C:\Windows\system32\w32time.dll (Local)
Enabled: 1 (Local)
InputProvider: 1 (Local)
AllowNonstandardModeCombinations: 1 (Local)
ResolvePeerBackoffMinutes: 15 (Policy)
ResolvePeerBackoffMaxTimes: 7 (Policy)
CompatibilityFlags: 2147483648 (Local)
EventLogFlags: 0 (Policy)
LargeSampleSkew: 3 (Local)
SpecialPollInterval: 3600 (Policy)
Type: NTP (Policy)
NtpServer: 10.7.0.4 (Policy)
NtpServer (Local)
DllName: C:\Windows\system32\w32time.dll (Local)
Enabled: 1 (Local)
InputProvider: 0 (Local)
AllowNonstandardModeCombinations: 1 (Local)
VMICTimeProvider (Local)
DllName: C:\Windows\System32\vmictimeprovider.dll (Local)
Enabled: 1 (Local)
InputProvider: 1 (Local)
Cisco config and errors
CISCO1#show ntp ass det
10.7.0.7 configured, insane, invalid, stratum 3
ref ID 10.7.0.4, time D5BC850F.C8400AB2 (15:50:39.782 MSK Mon Aug 19 2013)
our mode client, peer mode server, our poll intvl 1024, peer poll intvl 1024
root delay 62.50 msec, root disp 11128.04, reach 377, sync dist 11218.796
delay 6.06 msec, offset -467951.1096 msec, dispersion 56.49
precision 2**6, version 3
org time D5BC8864.F79C33A7 (16:04:52.967 MSK Mon Aug 19 2013)
rcv time D5BC8A38.EBDECB39 (16:12:40.921 MSK Mon Aug 19 2013)
xmt time D5BC8A38.EA5173BE (16:12:40.915 MSK Mon Aug 19 2013)
filtdelay = 6.06 5.87 3.23 7.90 6.41 5.17 13.03 3.43
filtoffset = -467951 -467905 -467936 -467885 -467764 -467816 -467707 -467697
filterror = 0.02 15.64 31.27 46.89 62.52 78.14 93.75 93.78

Hi,
>>I gave log on as a service right to this account in Default Domain Controllers Policy but unfortunately it was not enough
Based on your description, we can try to grant this account Allow log on locally
user right in the default domain controller policy to see if it helps.
The policy setting is:
Computer Configuration\Windows Settings\Security Settings\Local Policies\User Rights Assignment\Allow log on locally
Allow log on locally
http://technet.microsoft.com/en-us/library/cc756809(v=ws.10).aspx#feedback
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Best regards,
Frank Shen

"Cisco Catalyst Blade Switch 3020 for HP" Best Practices

Hi all,
Here we use this blade switch cluster for the Data Center server farm. Here we noticed some network traffic delay. when I monitor the up link I can see there is not much traffic in the link. So doubt about the traffic delay. If anyone can help me on this it would be great...
Thanks in Progress.....
Chandana

Here in the "blade switch for HP" a request processing application is running in a server. when we use the same type server stand alone with a separate switch it processes 80,000 requests per 4 hours. But when this blade server in the blade switch it only processes near 6,000 requests per 4 hours.
That what I mean like "Network delay"...
That is what I cannot understand.
I have attached the current configuration of the blade switch so you can go through it.
Is there any best practices specific to that type of blade switch that should enable?
Thanks for your help
regards
Chandana

Does Supervisor Engine 6L-E compatible with Cisco Ws-C4506 Non-E switch?

Does Supervisor Engine 6L-E compatible with Cisco Ws-C4506 Non-E switch?

Yes, it is compatible with non-e chassis.
see below:
The Cisco Catalyst 4500 Supervisor Engine 6L-E is also compatible with classic Cisco Catalyst 4500 line cards, chassis (3-, 6-, and 7-slot), and power supplies, providing full investment protection.
link to data sheet:
http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-4500-series-switches/data_sheet_c78-530856.html
HTH

Two forwarding root ports on cisco 3120 blade switch.

Hi,
 
 After upgrading blade switch 3120 to 12.2(46)SE, I could see two root ports in which both are forwarding.
 
 Te1/0/1 Root FWD 2000 128.27 P2p
 Te2/0/1 Root FWD 2000 128.81 P2p
 
 Where as STP should've kept the other root port as blocked state and named it has Alternate port.
 Also started seeing Mac flap messages.
 As soon as IOS was downgraded to 12.2(40)EX3, Problem was solved, even messages were stoped.
 Seems to be bug, but couldn't get any.
 

Hi Rob,
I have faced this issue with many enclosures so far and the only option left here is, you need to reboot the enclosure.
This is an issue with the IOS code and you have to open a case with HP to get the appropriate IOS ver. Probably 15.0 code has this issue resolved and I haven't seen this issue further after the Upgrade.
Thanks,
Sagar

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