Cisco Switching/Routing :: Replacing Defective Redundant Sup-720
Oct 29, 2011
How to replace a defective redundant sup. I read on several articles that inserting new redundant sup should not be an issue as the active sup will always send its configuation to the standby. We are running SSO on the Sup720. Should I switch it to RPR before I install the redundant sup? I read a case wherein they switched it to RPR from SSO before inserting the new redundant sup. My concern is the IOS mismatch since Cisco doesn't always send the same IOS on RMAs.What I am planning is this.
1. Save/Backup configuration
2. Remove the redundant sup on slot 8 (since it is a 6513)
3. Insert the new redundant sup on slot 8.
4. Check if all the configurations were synced from slot 7 to slot 8.
5. Copy the IOS from sup-bootflash to slavesup-bootflash. (if the IOS are not the same)
6. Check show bootvar to see if the boot variables are correct.
7. If bootvar is the same, reload slot 8 to boot the new IOS.
Is this a good plan or am I missing something? I am worried with this document if the redundant sup has a different software. If i insert the card in slot8, according to Cisco, it will revert to RPR. If slot 8 boots and it has a different OS, then slot 7 will switch to RPR even if it's active. Would I still be able to access the slavesup-bootflash of slot 8? Is it going to boot 100%? I read that doing a force switchover will cause a flip and RPR would cause the line cards to reinitialize and I don't want that. Well I am not going to do a force switchover since i want slot7 to be active and retain slot 8 as hot.
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Apr 17, 2013
Our company just recently bought a CISCO SA520W Security Appliance from a distributor here in the Philippines. Unfortunately, after a month of use, the LAN ports on the appliance started losing power. We reported this to the distributor and they sent a CISCO engineers to check on the unit. The engineers found the unit to be defective and need to be replaced.
Three weeks after the distributor pulled-out the unit, I have followed-up the status with them. They told me that they got no definite ETA from CISCO for the replacement unit. I followed-up with them again after a week. This time, they told me that the device is already in transit and it is coming from CISCO USA but they still don't have an expected time of arrival to give me.Does it really take more than a month for CISCO to replace a brand new defective unit? The serial number of our appliance is DNI1610G0G7.
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Jul 27, 2012
I have the task of replicating the router config on a 3825 router on a 3750 switch. Reason is we are taking out the router and replacing it with the switch to make use of the router for other functions.
Below is main part of the router config:
!
ip source-route
ip cef
!
!
multilink bundle-name authenticated
!
license udi pid CISCO3825 sn FCZxxxxxxx
!
vlan internal allocation policy ascending
[code].....
The 3750 switch I have runs C3750E-UNIVERSALK9-M, Version 12.2(55)SE3 on a LAN BASE license.
The first thing I have done is to order for a license upgrade to IP BASE which would give the support for OSPF routing.I do not see much of an issue with the Interface configs, however, I am not too sure about replicating the routing config on the switch.
My question is can I run the commands as shown for the OSPF routing on the switch? If not, can I get suggestions on how best to set this up on the switch?
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Nov 21, 2011
I am replacing a faulty sup720 on a 6513. It s the backup/hot not the active sup. It has the same IOS on it. Is it correct that all I need to do is remove the faulty and replace it with the new sup and do a wr mem? Fromwat I have read their should be no down time all connectivity should remain stable?
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Dec 6, 2012
We have sup engine 6L(WS-X45-SUP6L-E) on two 4506 switch. both switches connected in LAN (HSRP primary and Secondary).
We are going to replace it with Sup7LE. What is the best procedure to get this done with minimal outage?Any other important thing to be noted ? Note : We have Lincence for SUP 7LE
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Apr 8, 2013
I'm due to replace a stack of 2 x 3750 switches very soon with 2 x 3750Gs. These 2 current switches are the VTP server for a small domain. I have put the config on the new switches switches and I made it a server and used the same VTP domain and password etc and got the VLAN info ported over.Now I did this a while back and noticed the switches are in transparent mode with a revision number of 0, I need to set this back to server and swap the switches out but the revision will be lower than the client switches (around rev 200), what do I need to do?
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Jul 2, 2012
I decided recently to switch out our border router (1841 12.4 advsecurity) with a shiny new 1941 (15.2 SEC/K9) as the CPU upgrade was needed.The core below acts as a VPN end point to various other remote offices we have, all of which have a similar network design at each end (and all entirely managed by me). All of these are still running 1841's with 12.4 advsecurity on them as well. These are all GRE tunnels with ipsec procection on them (not crypto maps). [code]
Everything else works fine (NAT, route-maps etc), it's just these IPSEC/isakmp tunnels that are not playing ballIt's definitely not an ARP issue (all arps were cleared) and ICMP appears to work fine (ie, I can ping the remote tunnel's public IP endpoint from the core using the loopback for that tunnel as the source). I am suspecting it's something strange with the stateful firewall config, but I did try and apply ipsec and isakmp-msft to the ip inspect list, with no success.
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Mar 10, 2013
In my MDF I have a 4stack of the WS-3750-48P switches. Is it possible to replace one with a C3750X48PF-S with out causing any issues? Or would it be better to just have 3 stacked and trunk this one to the core 4506. Keeping in mind I bought this one to expand the port number for one of our remote offices.. I would hate to send them the gig switch when there isn't as much usage..Besides if I can get my CFO on this switch he might authorize me to replace the rest... He is reticent to believe it makes really all that much of a difference.
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May 7, 2013
I have a 2801 router that I am replacing with a 2911. I know the ports on the 2911 are Gigabits and the 2801 are Fe. I read where the IOS would not support backup and restore on each other . I am attaching a show ver on both routers. I need to know if backup and restore would work and or what other changes would need to get done.
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Jul 25, 2012
We currently have an environment with a 4507 as the core switch connected to four stacks of 3750e's in the wiring closets. A pair of Nexus 5548UP's also hangs off the 4507, but at the moment more or less dedicated to a certain purpose..The 5548UP's have the L3 daughter card installed.
My question is: Can a pair of Nexus 5548UP's do a C4507's job? Would we be able to decomission the 4507 and replace with the existing 5548UP's + FEXes?
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Dec 9, 2012
We are planning to implement the 6509-E with two Sup 2Ts and a few 48 ports switches. We also want to make this the router for our network and replace the 7206VRX.
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Mar 20, 2012
when replacing a line card on a 6500, i gather there is no config stored on the card, its all held on the sup, so when i put in another card the config will be the same?
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Jun 3, 2013
I was wondering what general steps might be taken in order to "replace two(2) 3750 (stacked) with one (1) 3750X - Server Access". General steps and what I might have to do configuration wise. I know i'm copy pasting the existing configs into the new switch, but are there any caveats?
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Feb 7, 2012
I have two 3750X in a stack. Each 3750X has one 10Gb uplink to primary core1 and one 1Gb uplink to backup core2 configured in 2 etherchannel groups. The member switch has bad ports, so I need to replace it. I have spare 3750X unit. Is it possible to connect the spare unit to the stack and then move the RJ-45 cables from the member with bad ports to the new member? That way I can minimize servers downtime to just a few seconds..If that would work, then the last step would be to move the 10Gb networking module from old member to the new one, as well as the secondary PSU. Is it doable? Also according to the documentation, all I need to add new member is matching IOS version, correct?
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Nov 20, 2011
I have two 3750G switches stacked together however it's not in a full ring configuration:
Stack Ring Speed : 16G
Stack Ring Configuration: Half
Stack Ring Protocol : StackWise
And as shown below it's obvious which cable is not working:
show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 2 None
2 None 1
It's not flapping - it's like the cable isn't there at all. I'm going to try reseating the cable in there and perhaps an all out replacement if necessary. My question - is there any threat of a reboot of the switch stack or of partitioning of the switch stack by trying to get the 2nd cable working?
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Dec 18, 2012
The stackwise marketing info states that when a failed member is replaced with a new switch the replacement switch "gets the exact configuration of the old device". I would figure it takes a little more than just disconnecting and connecting a new switch in the same spot on the stack. doing this with 3750 family switches? What are the steps to prepare the stack for a new member? what steps need to be taken on the replacement switch before insertion into the stack to make sure it gets configured like the unit it was replacing?
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Jun 18, 2012
I have a supervisor blade, (VS-S720-10G-3C), in a 6513 that is faulty and needs replaced. Do I need to replace the IOS on the new supervisor blade to make sure it is the same as the IOS image that is on the Active supervisor module, or will it synchronize automatically?
In the synchronization process, the active supervisor engine checks the standby supervisor engine run-time image to make sure that it matches its own run-time image. The active supervisor engine checks three conditions:
#
•If it needs to copy its boot image to the standby supervisor engine
#
•If the standby supervisor engine bootstring needs to be changed
#
•If the standby supervisor engine needs to be reset
I was reading the above documentation that mentioned the active supervisor should copy the image if it detects a newly installed standby supervisor blade with a different image, is this correct or was it referring to synchronizing the configuration file?
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Feb 10, 2012
I would like to add a redundant supervisor to my core 6509. Is this tricky to do? I know they have to be running the same IOS. I am worried if I put the new supervisor in it will write over the exsisting running config.
Catalyst 6000 supervisor 2 (Active) WS-X6K-S2U-MSFC2
Policy Feature Card 2 WS-F6K-PFC2
Cat6k MSFC 2 daughterboard WS-F6K-MSFC2
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Aug 30, 2012
Can 2 Cisco 4507E switches with redundant SUP6-E modules be connected togther using the the standard 10GB CX4 modules and CX4 copper cables? Are there any special modules or cables required.
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May 8, 2012
I sort of messed up and upgraded the IOS on one supervisor on a 6500 without doing the second, saved and reloaded. How to I get the 2nd one working again? When I issued a show module the "normal" Active sup shows active and the standby shows as Supervisor.
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Feb 5, 2013
we have 2 Supervisor IV modules in our 4507, i want to upgrade the IOS as its still on 12.2 and i am going to upgrade it to the latest.
my first question is, if i update the IOS on the bootflash will it replicate to the secondarybootflash?
secondly, can i force a reboot of the secondary supervisor, then the primary after the secondary is up? i'm just trying to minimise downtime and get a plan going.
is there a difference in 12 vs 15 that would impact my current config that i should be aware of?
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Oct 2, 2012
I know that the 6500 with a Sup 720 reserves power for a redundant 720. If there is no plan to install that redundant Sup, is there a means of releasing that reserved power? I know that one approach would be to insert a card into that slot to cut the reserve down, but I need to reclaim all of that power.
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Nov 7, 2011
I have an 4507R with one Supervisor Engin V card. I want to add a redundant supervisor engin card to my 4507R Chassis.
Can i use supervisor engin 6-E for redundant or i must use Supervisor Engin V ?
Witch model of Supervisor Engines Supported with this chasis?
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Sep 3, 2012
I was wondering if there was a way to disable the RPS in a 3825? When I do a Sho Env All I get the following;
Redundant Power System is present.
RPS is in standby state
Redundant Power System is present.
RPS is in standby state
How ever there is no RPS in the system. At least not that I know of. There is only one power supply.
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Sep 25, 2012
How to set up redundant LAN Ring topology with load balancing for a cisco catalyst 3560 platform.
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Jun 2, 2013
let me know the exact meaning of attach ( yellow marked one)? the contractor was saying "it doesn't mean two switches as there is a built in redundancy in Cisco switch)"I don't think he is correct as I never heard about built in redundancy in Cisco Router/switchAny comment as this will affect the numbers from 55 (3750 v2) to 110....
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Oct 8, 2012
Current our environment is the following:
Core1 ---- Core2
| |
Nexus5k
| |
N2k, N2k, N2k (FEX)
||
Servers, hosts, etc..
We would like to add another Nexus5k to this topology. However, it has to be a zero downtime infrastructure add-on. When setting up the keep-alive, peer-link, vPC and vdc domain, will there be any upset in network traffic on the current N5k?Also, are the Nexus5k configurations synchronized or are they independent from one another? Before setting up the new 5k, should i configure it to teh 6509's, and vPC's to the Nexus2k's before setting up peer-link?
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Oct 30, 2011
I have a Cisco 6500 series switch with VS-C6509E-S720-10G ,I have two redundant supervisors between two chassis on the LAN with no add-on line cards ?
I need to know if I can use the redundant supervisor 10 Gb uplinks to form a layer-2 Port channel between the two 6500 switches as i do not want to use want to keep the port idle additionally I need more bandwidth between the two switches for my server farm?
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Sep 1, 2010
There is a Cisco Catalyst 6513 in my office. Recently we decided to setup redundant Supervisor Engine 720-3B. When we did it, its became STANDBY COLD, and then it reloads. IOS is equal on both supervisors. It must be STANDBY HOT (SSO) redundancy. There is a configuration and show ver and show module outputs, and log of my actions.
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Dec 23, 2012
I was wondering if I am able to add a redundant power supply to an asr 1001 router that is in production without losing connectivity or causing any diruption to the Users - is it hotswappable?
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Nov 18, 2012
Two Cisco 3750X can be stacked together to ensure redundancy.Is the attached topology feasible for access layer redundancy?
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Mar 27, 2012
I have 2 6504's running HSRP as my core. They are each etherchannel'd to my Datacenter switch (3750 Stack) -- see image below.The problem i a having is with the etherchannel status:
Core1 PO11 status w (waiting)
Core2 PO11 status P(bundled)
DC11 PO48 status P -- but only to Core2 - the interfaces to Core1 are suspended. (See attached configuration documents) None of the devices have any information in the logs. I run this same configuration in my central location, but we are running Nexus 7000's. With the 6500's, do I need to split the port channels on the 3750 to allow them to negotiate the etherchannel? If I split the portchannels, are there any concerns? Should I expect to see the etherchannel status as P (Bundled) or H (Hot-Standby)?
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Mar 25, 2013
i have 2 no of 3560G in our core, now my requirement is to establish the redunent network like for the edge 2960G using stack or some other way ...
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