After trying to downgrade a Nexus 7K from 5.2.1 to 5.1.5 by updating the boot & kickstart boot statements and reloading, I'm now stuck in an endless cycle of reloading. See below:
Is there a break sequence which will allow me to modify the boot statement back to the original via ROMMON or something similar?
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I'm currently getting a Nexus hardware failure at present.
switch %MODULE-2-MOD_DIAG_FAIL: Module 8 reported failure due to DEVICE POST/DIAG FAILURE in device 48
I've Nexus 7010 switch installed in my DC. I've conncected Cisco router to one of the Ports. On the same port I'm getting following error message and hence, unable to form EIGRP neighborship.
DR-CORE-SW-S01-NEXUS7K %MODULE-2-MOD_SOMEPORTS_FAILED:
Module 1 (serial: JAF*******NGK) reported failure on ports 1/2-1/2 (Ethernet) due
to R2D2 : Speed patch failed - no frames transmitted in device 143 (error 0xc8f0
1273)
Since upgrading a 3750x switch stack to version 15, PC's on the network do not get a DHCP lease. The only way to get them to work is disable and re-enable the NIC card.
Downgrading the IOS does not downgrade the microcode on the switches.Is there anyway to downgrade the microcode?
We made an IOS doBlades on switch 4507R keep block after an IOS downgradewngrade. Before to do it, the equipment comes with blades 1, 2, 3, 4 and we insert "X4418" and "X4548" on blades 5 and 6.[code]
After we made an IOS downgrade to a cisco 4507R from "cat4500e-ipbasek9-mz.122-54.SG.bin" to "cat4500e-entservicesk9-mz.122-53.SG2.bin" (comes with a redundancy supervisor blade WS-X45-SUP6L-E) the standby supervisor keep disable.We tried with the command "Switch(config)#boot system flash cat4500e-entservicesk9-mz.122-53.SG2.bin" then save configuration and "reload" comand but the switch runs with the "...54.SG.bin" IOS.
We erase the configuration with the command "erase/all non-default", before to apply the reload command insert the "entservicesk9-mz. 122- 53. SG2.bin" using the tftp command.The standby supervisory remains on disable state but the active supervisory runs with the desire IOS. In order to downgrade the IOS to the standby supervisory the active supervisore was removed temporarely (previously the switch was off) to make the standby as active, after that made the same procedure with command "erase/all non-default", "copy tftp://(....122-53.SG2.bin), and "reload" command.
The switch was off and re-insert the active supervisory and turn on the switch, after we made the procedure the blade "WS-X4548-RJ45" marks a fault as follows: [code]
The blades were reset but don't have access to them.
Is there a way I can downgrade the firmware on a C3750 v2 switch 24TS-S v07 to 12.2(35) SE5. I have added this new switch to an existing stack but the FW is not compatable. I believe the answer is to upgrade the rest but I cannot afford any down time as they are used to run a CCTV securiy network 24/7. I have included details below to assist with my problem. Switch 4 is the one with a version miss match.
LNB-SWI3750-CTR-01#show verCisco IOS Software, C3750 Software (C3750-IPBASE-M), Version 12.2(35)SE5, RELEASE SOFTWARE (fc1)Copyright (c) 1986-2007 by Cisco Systems, Inc.Compiled Thu 19-Jul-07 19:15 by nachenImage text-base: 0x00003000, data-base: 0x01080000
ROM: Bootstrap program is C3750 boot loaderBOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(25r)SEE4, RELEASE SOFTWARE (fc1)
LNB-SWI3750-CTR-01 uptime is 19 weeks, 3 days, 22 hours, 46 minutesSystem returned to ROM by power-onSystem image file is "flash:c3750-ipbase-mz.122-35.SE5/c3750-ipbase-
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specifying Cisco devices and I've made an error.I have 2 Catalyst 2960S switches (C2960S-24PS-L).Based on this snippet of web copy from the Cisco website:What's new for the Cisco Catalyst 2960-S Series Switches with LAN Base Software: # 10 and 1 Gigabit Ethernet uplink flexibility with Small Form-Factor Pluggable Plus (SFP+), providing business continuity and fast transition to 10 Gigabit Ethernet I bought a cable assembly "SFP-H10GB-CU3M" (3 meter copper twinax cable with 10GB SFPs on each end). Unfortunately, it appears after more careful reasearch that my specific model 2960S's are not directly compatible. , can I force these 10GB SFPs down to 1GB and get them to work with my switches or do I need to return and repurchase?
View 1 Replies View RelatedWe are facing issue of continous packet discards On nexus4001L link (int po2) to Nexus5020 switch. Nexus4001L is installed in IBM blade center server and we have FCOE enabled in this setup. [code]
View 2 Replies View RelatedI have been tasked to replace the existing Cat 6500 and 3750 switches by Nexus 7000 and Nexus 2000.I was told initially my boss plans to get 2 x Nexus 7000 and then eventually blow up to 4 x Nexus 7000s.For Nexus, is there a list of tasks / points that i need to consider for building the initial design?
Can i just link the Nexus 7000 like the following?
N7k-A ========= N7k-B
| |
lots of N2ks lots of N2ks
Struggle to find the SNMP MIBS of the Nexus 5000 FEX tranceivers.
View 3 Replies View Relatedwe are planning a Nexus datacenter project with this layout:Our experiences with Nexus switches are not so large until now and the manuals are very extensive.Both N5K´s should be connected directly with all 4 N2K switches. I did not find a layout like this in the manuals. Only a design,where only 2 N2K are connected to one N5K, with this fex config:Now I´m not sure if it is right to make a config like this with the same slots and fex´s or with different slots and fex´s.
View 1 Replies View RelatedI have a WS-C3750X-12S-S (IP Services) that I THINK I'd like to downgrade to LAN Base so I can stack it with a WS-C3750X-48T-L that is already LAN Base..
View 4 Replies View RelatedIs it possible to downgrade the 4900M IOS image from Universal 15.x image to non-Universal (possibly IP BASE) 12.x image.
View 1 Replies View RelatedI am trying to update a switch I bought to the latest IOS using the Cisco Network Assistant but the it is failing becasue it's saying I dont have the space.
In the CLI I get,
Switch#dir all-filesystemsDirectory of flash:/
2 -rwx 109 Mar 01 1993 00:01:47 +00:00 info 3 -rwx 270 Jan 01 1970 00:01:37 +00:00 env_vars 7 -rwx 3081999 Mar 01 1993 00:03:23 +00:00 c2950-
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I have a cable from an SFP module in a WS-C3750-48P with 12.2(55)SE1 running to a Gigabit port on a Cisco WLC. After the switch recovers from a power failure, the gigabit autonegotiation fails. The cure is a long drive to unplug and reseat the SFP. Note this happens at too many similar sites for this to be a loose connection. Interface shutdown then 'no shutdown' is not sufficient. The state is 'line protocol is down (not connected)'. Interface is configured for switchport mode trunk (auto speed, auto duplex). Command 'switchport nonegotiate' makes no difference. Is there a more powerful command than 'shutdown' which might toggle the interface signals? Is there some way of resetting the SFP? sh int gi 1/0/1 displays 'media type is 10/100/1000BaseTX SFP' and zero packets received.
View 4 Replies View RelatedI have a C2960-24TT-L Switch with the following problem:When the Power Cord is plugged in the Switch, all switch indicator LEDs go on very briefly. Then SYST LED blinks very briefly, goes on steady and remains at this state without any indication at the console.Tried the reset by holding the MODE button while plugging in power but I still get no indication at the console. All is fine with console, meaning that if I take out the cable and plug it in another switch, then I see all that there is there to be seen.My question: Is the switch beyond repair or is there something that can be done to get the switch to run POST and boot at rommon so that I can reload SW and configs?
View 3 Replies View RelatedIOS upgrade tried on the stack of 2XWS-C3750X-24T-S , Upgrade was tried to support WCCP on the platform. Current version is Cisco IOS Software, C3750E Software (C3750E-UNIVERSALK9-M), Version 12.2(58)SE1, Not able find any IP Plus ios in the site ? Only available are IP base and Universal K9 , Tried upgrading to c3750e-universalk9-tar.122-58.SE2.tar by using stack upgrade method as per document [URL]
Upgrade fails with error :
%Error opening flash:update/info (No such file or directory)
ERROR: Image is not a valid IOS image archive.
Why current ios is not supporting WCCP , I hope it is there in the featureset. ( tried "sdm prefer routing" but no success) Does c3750e-universalk9-tar.122-58.SE2.tar will give me wccp support ? What is the issue with my upgrade and how do I do a successfull upgrade ?
When installing the license for a 3750-E I get an error that the license doesn't reside on the flash though dir reveals the image in flash. Seen this, know of a resolution?
View 5 Replies View RelatedI have implemented in my company network recommended by cisco scheme with MEC etherchannel from some segment distribution layer (VSS) to core switches (legacy 650x) exactly as on picture: Core switches have rather old IOS (Version 12.2(33)SRB4 and i have reasons not to upgrade it now) which dont support many functions - like BFD over Etherchannels and Enhanced PAgP. And we run a OSPF/MP-BGP/MPLS bunch over those links with OSPF reference bandwidth configured to such values that failure of one link in etherchannel will not lead to link cost changes (we dont have a lot of traffic for now on those links and 1 link can handle it easily) and consequently will not trigger changes to RIB and BGP topology table.
Problem is that i am afraid that in case of one of link of portchannel will fail (but without port down event - unidirectional link or smth else) it will take rather long time to converge - and im talking about L2, not L3 protocols. Cos i cant implement BFD and ePaGP over this link - best i can do that improve 30 seconds PAgP hello timer to 1 second. But at least 3 seconds of possible traffic blackholed - is rather big problem.First time i considered 2 possible solutions:
1) BFD - but even i can use it, it will not improve much recovery time cos 750 ms for BFD over etherchannel not much better that 1 second PaGP fast timer.
2) ePAgP - as i understand this protocol have enhancements to discover failed link faster and improve recovery time, but all information i can find about it - is how to use it for dual active detection and none about timers improvements. So i cant be sure that i should upgrade IOS on Core switches and it will improve my failure detection time. ( if it possible adduce some links to description of this protocol enhancements in comparison with PAGP)
For now im already thinking about using four L3 links (instead of 2 portchannels) and BFD over those links with 50 ms hello timer. But in case of link failure reconvergence of OSPF will take some time, and BGP will react to this no immediately, so i am afraid that even using aggressive timers for routing processes and hellos i will not win much time.
We had power failure catalyst 6509 and after the device boot up ssh does not work any more below is error messages
line con 0
access-class 90 out
logging synchronous
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We have FEX (2232TM) connected with 2 x NEXUS N5K-C5596UP.
One port Ethernet 101/1/7 which was connected to Dell Server went down...
It was working for a couple of weeks at least. Then the link went down and now I'm unable to get anything connected to this port As I said, this already happened before, but unfortunately I can't remember if it was on the same port/fex ... from the fex uptime it seems that this was on another fex I was able to get the link back up by doing a power cycle of the fex
At the moment Dell server is connected to different port Ethernet101/1/4.. See config bellow:
. config, how ports are configured
interface Ethernet101/1/7
description VM008 Network 1
switchport mode trunk
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We have a stack of a 3750E with a 3750X, when we turn off the master, a disconnection occurs for around one minute while only one request timeout is seen when the slave is turned off. Is this normal? Details: in other words, when the slave switch is elected as the new master all the port-channels and some physical ports become in 'down' state before reobtaining the up state again, this results in a one minute outage. The question is: is it normal to have a layer2 control traffic interruption when the master fails and re-election occurs and if yes, what is the normal downtime in seconds. the layer2 control information such as port-channels LACP protocol are not synchronised to all slave switches by the master?
View 7 Replies View Relatedapplied an iOS update to a stack via tftp. I used the archive Download-sw tftp:// method. I rebooted the stack after complete and it never came back up. I discovered the master switch upgraded but not the member. The member was sitting there with all amber lights on and frozen after the iOS load. The master wouldn't finish boot until I removed the member from the stack. I had a version mismatch and they would not communicate.
View 2 Replies View RelatedI recently tried to manually format the flash on a model WS-2960S-48TS-L switch running IOS version 15.0(2)SE. While executing the operation I got the following error - mifs[8]: Failed to create superblock %Error formatting flash (I/O error).As a result the flash is no longer accessible by the switch. I spoke with Cisco and they indicated that a switch reload would remount the flash and make it accessable again but the .bin file would need to be reloaded using the xModem recovery procedure (what a pain).The next IOS version 15.0(2)SE1 will supposedly fix this bug but it has not been released yet. In the meantime if you are running 15.0(2)SE you may want to hold off performing a "format flash:" function on a 2960S.
View 3 Replies View RelatedOne of my customer had a problem with A/C and the room temperature reached almost 50 C. We came to the site and saved the configuration, took a backup and shutdown the switch.
After the A/C problem is resolved, we tried to power-on the switch .. and we found that it is going to the rommon.
I put "boot" command to boot from the bootdisk, but I am getting the following error:
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I tried to search it, But it is resulting in that most probably it is a hardware failure on the SUP.
I have a cisco 876 with, c870-adventerprisek9-mz.124-6.T9.bin. I have configured a VLAN with ID 230, an SVI with IP 192.168.230.1/24 and I have assigned switch port fa 2 to it…
interface Vlan230
ip address 192.168.230.1 255.255.255.0
VLAN ISL Id: 230
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7x stack WS-C3750E-48TD-E orignal code 12.2.35...i wanted to get it to 15.0.1 so as a test i disconnected top switch (not the master ) and installed via archive download-sw /allow upgrade 15.0.1.tar. and it worked away fine...
so i moved onto the stack, issued the same command, image loaded rebooted and stack hung..Consoled in and switch was unable to boot..looping on trying to load flash. [code]
I want to capture RPS related alarm on SNMP server for RPS2300 and cisco 3750d switch
View 1 Replies View RelatedI have a switch 3560v2 with an IOS 12.2(50) SE1.All the lights ON and console error message below:POST: inline power post failed for port 0 up to port 15.Then, the system hanged and all lights (indicator) ON.
View 5 Replies View RelatedWe recently installed a WS-X6716-10GE module in slot 6 within a Cisco 6506. We are using two ports on the module (6/13 and 6/14), which are port channeled together to a Nexus 5548. Everything has been running fine for about a month and the card had a green light but the ports stopped communicating. The module was screwed into the chassis/slot. For problem determination reasons, we reconfigured ports 6/13 & 6/14 to 6/15 & 6/16 and moved the cables but the module was still not responding. We eventually pulled the module out of the slot and reinserted the module back into the slot, which reset the module and fixed the problem. Is there any way to determine if this was hardware problem with the module and it should be replaced, or is it a software bug/problem? We opened up a ticket with the TAC but we haven't heard back from them yet.
Cisco WS-C6506-E
Cisco IOS Software, s72033_rp Software (s72033_rp-IPSERVICESK9-M), Version 12.2(33)SXI8, RELEASE SOFTWARE (fc2)
Mod Ports Card Type Model
--- ----- -------------------------------------- ------------------
5 2 Supervisor Engine 720 (Active) WS-SUP720-3B
6 16 CEF720 16 port 10GE WS-X6716-10GE
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The Catalyst 3750 switch reboots, and the " Reloading because of stack merge or communication failure" error message appears.
I saw this issue at "Cisco wiki" but the resolution in that page is just "Open a case with TAC". Because of the reasion is H/W Problem.
Is The resolution only one ? anything else? The 3750 does not use Stack.It is just stand alone. So i think it has other resolution as "disabling Stack" or another one. How about my opinion ? Is the Resolution only "Open a Case with TAC"
I have a stack of 3750x switches running 15.0 (2) SE2 IOS. When I reload the switch stack, I am seeing the following message in the logs: IPv6 user port trust TCAM write failed.
View 2 Replies View Relatedsetting up VRF-lite on redundant 6509-E chassis to account for chassis failure? Let's say I have 2x 6509-Es configured with HSRP for 2 vlans, ServerA and ServerB. So
6509-A#
!
interface Vlan10
description ServerA VLAN
ip address 10.10.10.2 255.255.255.0
ip flow ingress
standby 1 ip 10.10.10.1
standby 1 priority 105
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I now need to create an environment where the Server VLANs can be provided for two customers and they need to be wholly separate. On 6509-A, I make VRF CustomerA and VRF CustomerB and I assign Vlan10 to VRF CustomerA and Vlan20 to CustomerB. Do I create the SAME VRFs on 6509-B with the same logic?