Cisco Switching/Routing :: 4900M - Basic Configuration And Administration

Jan 1, 2013

First time user of cisco hardware and we just purchased the 4900m catalyst switch.  My question is very general.  I am simply hoping to network 3 servers together and I do not wish to do any fancy or advanced configuration.  Can I simply use the web management interface for network administration and setup?  I just downloaded the Catalyst 4500 Series Switch Cisco IOS software configuration guide and they talk about Cisco View network management system, is this my answer or is this what most people use for basic configuration and administration?

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Cisco Switching/Routing :: 4900M Basic Management Setup

Apr 13, 2010

I' ve three 4900M switches equipped with the WS-X4920-GB-RJ45 module and the WS-X4908-10GE module. Now I'm started to setup these switches in our lab environment for the first time. They behave a little bit strange in comparison with the C3750 series which I used before and which I will replace by these powerful machines.

I tried to setup these switches to be managed through the management port. I configured IP address, default route in the management vrf, set the source-interface for tftp,ssh,ftp and tacacs to use the management port. Ping using the manangement port was successful. After finishing theses steps I configured the TACACS and AAA settings accordingly the informations I found on CCO. I tested the settings with "test aaa group authentication" command- without success. On my Cisco ACS no request was received and the switch told me he could't reach the tacacs server. Other switches in the same IP subnet are working without failure, so firewall or server should not be the problem.

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Cisco Switching/Routing :: 4900M Management Configuration Via Vrf

Mar 10, 2013

I am just going to deploy some new 4900Ms for a customer. Want to know if configuring management for 4900 (everything like NTP, AAA, SNMP , DNS ) is doable through management interface in management VRF and there are no caveats to be aware of.

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Cisco Switching/Routing :: 4900M Management Configuration Required

Dec 8, 2011

I am just going to deploy some new 4900Ms for a customer. Want to know if configuring management for 4900 (everything like NTP, AAA, SNMP , DNS ) is doable through management interface in management VRF and there are no caveats to be aware of.

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Cisco Switching/Routing :: Perform Initial Configuration Of 4900m Switch?

Jan 2, 2013

I am slowly working my way though the setup and configuration of our new 4900m switch.  The switch will have a pretty basic operational configuration. We are simply going to network 3 servers together through the swtich.  Anyhow, I have been fallowing the guide at this site: [URL]
 
Basically the switch is brand new and I just setup things such as the clock, the banner, and the hostname.  Anyhow, at various points in the guide such as the configuration of the telnet password and especially the interface gigabitethernet I get the "invalid input detected at '^' marker".  I also did a show interfaces and noticed there was not any gigabitethernet interfaces but there was a
 
"FastEthernet1 is down, line protocol is down Hardware is Fast Ethernet for out of band management, address i"
 
Anyhow, my thinking is continuing on with the guide and at least try to setup the interface for the management port so I can then use the cisco network assistant gui to then configure the rest of the switch. 

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Cisco Switching/Routing :: 3750X - Basic Configuration

Jul 19, 2012

We currently have 7 Cisco 3524-XL switches (10-12+ yrs old) which are 10/100.  We purchased a handful of Cisco 3750X switches to replace them going with the whole stackwise and redundant power supplies.  Our current configuration on the old 3524 switches is that they have hardset all the ports on them to 100MB/FULL since devices would auto-neg to 100/Half. Since we're going from 10/100 to 10/100/1000 switches, I want things to auto-neg as I have heard in the past and experienced that things work better when it auto-neg to gigabit.  My upper management is afraid since the old switches wouldn't auto-neg correctly that we should hard set all the ports on the new switches, which would be a nightmare since some ports would be hard set to 100/FULL others to 1000/FULL, etc..  We've tested just about all of our devices at auto with the switches and they've all auto-neg to the correct speed. In short, is Auto-Negotiation the way to go with the newer switches or is it still better practice to hard set your ports?

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Cisco Switching/Routing :: Stack 4900M With 2960S?

Mar 11, 2013

I would like if is possible to stack a Cisco 4900M with a 2960S. I know it is not the most common situation but i need it.

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Cisco Switching/Routing :: How To Configure CVR-X2-SFP On 4900M Switches

Apr 4, 2013

I have an issue with couple of Cisco 4900M switches. We just got them and tried to use the TwinGig Converter on the 4 ports 10G module.
 
The problem is that the switches sees the new module in slot 2 and when we are inserting the TwinGig Converters we are getting the error message and when we are trying  to type the command this command it does not work."hw-module module <slot> port-group <group> select gigabitethernet",When we go to config T, the only thing we can type is "hw-module module <slot> and if we do a ? the only thing is available is logging and power and we can't type
 
Port-Group or anything else. Is this a hidden command or we have to something else?

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Cisco Switching/Routing :: 4900M / CPU Receive Q (L3 Glean / 6)

Jul 30, 2012

on a Cisco 4900M running IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICESK9-M), Version 15.0(2)SG1, RELEASE SOFTWARE (fc4) I'm getting a lot of packets on CPU Q "L3 Glean, 6".What is that queue and what could be the root cause?

Packets Received by Packet Queue
  
Queue                  Total           5 sec avg 1 min avg 5 min avg 1 hour avg
---------------------- --------------- --------- --------- --------- ----------
Host Learning                     1563         0         0         0          0
L2 Control                     1138188         3         0         0          0
Ttl Expired                          2         0         0         0          0
L3 Glean, 6                    4889394      4067      4381      3367        779

[code]....

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Cisco Switching/Routing :: 4900M - 1GB Port Connectivity?

Aug 10, 2012

Is it possible to use 1GB (SFP / Copper) on the built-in 8 x X2-10GB ports without any Network Module of 1/10GB. If so how.

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Cisco Switching/Routing :: X2 Module 4900M Upgrade SAN To Use 10g

Jan 4, 2012

I have a client whom has a 4900M switch as their SAN switch. They are getting ready to upgrade their SAN to use 10G.I had quoted them a price for an X2 module, but I am unclear based on pictures I have seen of the part number
 
X2-10GB-SR
 
whether or not the X2 module plugs into the X2 slot on the switch, AND then also has to have a transceiver put in it to receive the SC ends of the Fiber jumper, or whether the SC ends of the fiber jumper plug into the X2 module directly.

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Cisco Switching/Routing :: Stack 4900M With 2960S?

Mar 11, 2013

I would like to know if i can and how stack a Cisco 4900M with a 2960S. I know it's not the most common but i need it.

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Cisco Switching/Routing :: 4900M - Upgrade IOS Version

May 7, 2012

I have this 4900M running version 12.2(54)SG1.  I the log I get this 3 lines:

May  8 08:32:15: %C4K_SWITCHINGENGINEMAN-4-TCAMINTERRUPT: (Suppressed 429 times)flCam0  aPErr interrupt. errAddr: 0xC48 dPErr: 1 mPErr: 0 valid: 1
May  8 08:32:24: %C4K_L3HWFORWARDING-4-FLTCAMPARITYERROR: (Suppressed 866 times)FL Tcam Perr with no FwdEntry Hw index: 3144 Hw entry:  Sw entry:
May  8 08:32:45: %C4K_SWITCHINGENGINEMAN-4-TCAMINTERRUPT: (Suppressed 432 times)flCam0  aPErr interrupt. errAddr: 0xC48 dPErr: 1 mPErr: 0 valid: 1
 
They seems to be coming on regular basis, repeating every minute. I've tried Google and the most relevant info I can find is this {URL}. But it says "Upgrade software to IOS version 12.2(52)SG or later OR 12.2(50)SG4 or later. ".  I'm already running 12.2(54), so why does this 3 line repeatedly show up in the log every minute.

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Cisco Switching/Routing :: How To Setup SPAN On 4900m Switch

Feb 12, 2013

I currently have IOS image cat4500e-entservices-mz.122-53.SG5.bin.  According to my research it appears SPAN is supported on this OS.  However, after looking at procedure notes using websites like here:

[url]... I cannot find and obviously not figure out how to use the SPAN  command.  My main objective is to simply setup a port mirror on one of my TenGigabitEthnet interfaces and from what I read SPAN is the best way to setup a tap interface on a cisco switch.

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Cisco Switching/Routing :: 4900M Etherchannel Load Balancing

Dec 18, 2012

We have to cisco WS-C4900M with Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-IPBASE-M), Version 12.2(53)SG5, RELEASE SOFTWARE (fc1).We have four gigabit link connected between those two switches.We have create a LACP port channel with those four ports on both switches. Ether-channel is up and running and defined with a load-balancing method of src-dst-ip.But when we test the load-balancing, it's not using the src-dst-ip rule with the XOR: [code]

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Cisco Switching/Routing :: 4900M Connecting 10GB Interface To 1GB

May 12, 2012

I have 4900M with X2-10G-LX4I need to have a link from it to 3560X GLC-SX-MM using MM Fiber Patch Cord.any configuration required in 4900M to change the speed of X2-10GB-LX4 to 1GB ?

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Cisco Switching/Routing :: Upgrading 4900m IOS From IPBase To Enterprise?

Feb 10, 2013

My current version IOS is cat4500e-ipbase-mz.122-53.SG5.bin.  I just got a new version cat4500e-entservicesk9-mz.122-53.SG5.bin.I put the new version in bootflash: directory and tried various methods of starting the IOS up to run the new version but it always started in the original ipbase version.  My start-config shows:

boot-start-marker
boot system flash bootflash:cat4500e-entservices9l-mz.122-53.SG5.bin
boot-end-marker
 
and I even deleted the ipbase version in the bootflash: directoy so then my switch would not even boot up at all and hung in rommon. In rommon I tried

boot bootflash:cat4500e-entservicesk9-mz.122-53.SG5.bin
and the result I got back was
File has bad file magic number: 0x0
 
So I had to point the switch to my tftp server and boot back into a back up copy of ipbase.  how I can get my new IOS version to work?  I understand I might have to download it again but I just got it so I am skeptical it is a bad file. [URL] as a procedure guide and I do notice some of those commands/steps do not work on my 4900m switch.

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Cisco Switching/Routing :: 4900m Switch Enable HTTP

Jan 6, 2013

I have been trying to get the http server enabled so I can access Cisco Network Assistant.  I have my interfaces configured but for some reason the server in not running, port 80 is still closed. [code]

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Cisco Switching/Routing :: 4900M Twingig Converter Module SFP

May 3, 2012

I am little confused with all these SFP types.
 
Can I use GLC-LH-SM, GLC-LH-SMD and SFP-GE-L with Twingig converter module? When I used Cisco configuration tool, the only option is GLC-LH-SMD for 1000BASE-LX.

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Cisco Switching/Routing :: Interface Numbering Scheme Available For 4900M?

Jan 17, 2010

I was wondering if a interface numbering scheme is available for the 4900M.  Configuration includes 1 x 8Port 10G and 1 x 20Port 1G modules. would like to understand How the slots are addressedInterface AddressingTwinGig interface addressing 

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Cisco Switching/Routing :: 4900m - Private VLan And VTP Version 3?

Dec 10, 2012

know if Private Vlans are supported on the Cisco 4900m switch when set in VTP version 3 and VTP disabled?Most documents just specify VTY transparent mode without mentioning the version, trying not to assume since this is production.

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Cisco Switching/Routing :: Catalyst 4900m With TwinGigi Converter?

May 23, 2012

Got a question for 4900m with TwinGigi Converter.   I bought couple TwinGigi Convert thinking to use it on fix module ports (8 * 10G ports on 4900m ten1/1 to 1/8).  I follow TwinGigi configuration guide [URL]however, I am getting Invalid commands on hw-module: 

Switch(config)#hw-module module 1 ?
  logging  Logging 
Switch(config)#hw-module module 2 ?
  logging  Logging
  power    Enable/disable power to module in specified slot

[code]...

here is show ver and show mod:
 
Switch#show ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-IPBASEK9-M), Vers
ion 15.0(2)SG2, RELEASE SOFTWARE (fc3)
Technical Support: [URL]
Copyright (c) 1986-2011 by Cisco Systems, Inc.
Compiled Wed 07-Dec-11 20:20 by prod_rel_team

[code]...

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Cisco Switching/Routing :: Catalyst 4900M Switch Stackable

Feb 2, 2012

Would like to know if the Cisco Catalyst 4900M Switches are stackable?

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Cisco Switching/Routing :: 2821 Multicast Routing Relay Basic

Mar 12, 2013

I  start configuring Cisco 2821 router for multicast . First short  description and attached sheme explanation. Let we say  I have small  network with 100 users. One router and Cisco switch 3560. Two VLAN’s,  one for data another for multicast. Data from internet works fine but  now I want to connect multicast servers (or source of more multicast  streams) from another subnet. Router have three interfaces.I expect there should be no problems with multicast configuration, but unfortunately it is not like I expect. What I did ?

First step:  enable multicast routing

Second step: on both interfaces (Fe 0/1 and Fe 0/2)  - ip pim sparse-mode

Third step: configure switch that users are connected to access port in VLAN 222 (temporary to see if multicast work)
 
When  I start VLC on computer nothing happend. If I try to connect computer  on same subnet where is source of multicast streams it works fine.What  I am doing wrong ? Is there anything about routing ? All subnets are  directly connected. RP is not needed if I have one router or ?

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Cisco Switching/Routing :: Any Special License On Catalyst 4900M In Order To Run VRF Lite?

Apr 4, 2013

Do I need to run any special license (like IP SERVICES) on the Cisco Catalyst 4900M in order to run VRF lite?

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Cisco Switching/Routing :: Switchport Trunk Encapsulation Dot1q Fails On A 4900m?

Jan 9, 2012

I'm setting up a new 4900m running  cat4500e-ipbase-mz.122-53.SG5.bin. I'm attempting to create Port-Channels as a Trunk for uplink to a 4503 running cat4500-ipbase-mz.122-37.SG1.bin.When I attempt the command "switchport trunk encapsulation dot1q" it errors out.

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Cisco Switching/Routing :: 4900M - Facing High Frequent Interfaces Flaps

Feb 18, 2013

We are facing issue with highly frequent interface flaps on Cisco 4900M switch only for module WS-X4920-GB-RJ45. Strange thing is no complaint from the users/server teams for any traffic interruption.
 
Switch: Cisco WS-C4900M

Line card: WS-X4920-GB-RJ45

IOS image is cat4500e-ipbase-mz.122-53.SG4.bin
 
There are several other smilar model & linecard/inventory of switches with exactly same IOS image, however there are no issues with them.

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Cisco Switching/Routing :: 4900M / 2960 - Two L3 Switches As Redundant / Mated Pair?

Nov 6, 2012

There are two Cisco 4900M L3 switches and two Cisco 2960 L2 switches. I need to configure the two L3 switches to operate as a redundant pair, as the servers connecting to them are connecting using bonded interfaces, which can only have one default gateway. So these two L3 switches need to have the same Vlan interface 1, 2 and 3 IP's set onto them.How are the two L3 switches made aware of each other? via a normal trunk? Is there some special configration for configuring a mated/redundant pair of switches? or are they both just configured as though they were the same switch, but linked?

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Cisco Switching/Routing :: 4900M WS-X4908-10G-RJ45 Port Startup Delay

Mar 4, 2013

We have recently purchased 2 x 4900M switches with the following configuration:
 
2 x X2-10GB-SR installed in port te1/1, 1/2 (optical)
 
1 x 20 x 1GB RJ45 installed in the top left of chasis ge2/1 - 2/20
 
1 x WS-X4908-10G-RJ45 8 port 1/2 card in the top right of chassis te3/1 - 3/8
 
We have te1/1 connecting the 2 switches, and various vlan's and connections on the 1GB RJ45's with no problems.
 
However, we have a number of 10Gbps BaseT connections te3/1 - te3/5 which are causing us issues. On a reload of the switch or removal / re-install of the cable it can take anywhere up to an hour for the port to become active again. So when we reload the switch, we may get a connection come up after say 3 mins, but the port next to it may not come up for 15-60 min. The cabling is all the same (CAT6 and has been tested/verified) and all connections go to Broadcom 10Gb cards in Dell 820 servers running vmware. We have the following set on the ports:
 
switchport mode access
spanning-tree portfast
 
No speed or duplex can be set on these ports - these options are not available in the config.
 
Once a link is finally established, it will hold the link solid with no problems, but this is a problem for us, we can't have a reboot take an undetermined amount of time for the link to come back.

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Cisco Switching/Routing :: 3560x - Lan Base 4900M Can Take Load Of 18 Access Switches

Feb 6, 2012

We are using 18 numbers of 3560X -Lan base series switches in our network(Access layer). We have 400 users and created vlans in access  switches. we are planning to purchase Two numbers of 4900 M as Core layer switch and for redundancy. The uplink would be on 10 gig copper cable (CAT 7) between the access layer switches and core switches. I like to know whether 4900M can take the load of 18 access switches.

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Cisco Switching/Routing :: 4900M - Establish Link Connection Between 10Gbase-T Server Nic And Switch

Jan 2, 2012

I have an issue with a Cisco 4900M switch with a WS-X4908-10G-RJ45 half card.  The link connection between a 10Gbase-T server nic and the switch does not establish, i believe it is an auto negotiation problem.  The link fluctuates constantly between connected and disconnected when set to auto negotiate.  When the 10G half card port groups are configured for 1G connections it does the same.  If i hard code the server nic to 1G the link remains up when the port group is at 1G.  If i hard code the server nic to 10G the link stay down, i don't think the port speed and duplex can be hard coded on the switch end.  I have tried updating the drivers on the server as well as diagnostic tests on the nic, which passed.  The 4900M IOS code is version 15.0.2-SG2.  If i plug a laptop into the 1G configured port the switch and the laptop negotiate at 1G.  Also, i believe, if the 10G server nic is plugged into another 1G only switch the link auto negotiates to 1G as normal.  The server nic is an INTEL Server Adapter AT 10G, which became end of life in 2009.  I believe the half card came out in 2010.

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Cisco Switching/Routing :: 891W / Basic WAN Setup (IP And DNS)?

Feb 9, 2012

I am trying to configure the FE8 (WAN port) to connect to the Internet.  We're swtiching ISP'ssoon so this router was set up at my office and has since been deployed at the client site.  So far it is just plugged in and powered, with a console cable attached but no LAN cabling since this router will replace an existing one using the same addressing (except the WAN settings of course).  So for now I am just focused on working on the WAN side since I have the ISP's cable modem attached .  I had intiially used CP Express to config the wan port with an IP and mask and the various port forwarding options I intend to use.  Now, connected via console cable, I tried pinging the IP of the wan port, which works.  Beyond that, can't ping anyting (8.8.8.8 - a Google IP), also can't resovle any DNS names which makes sense with no apparent connectivity.  Likely my config is just imcomplete.  Nowhere in sh run do I see a Default Gateway, yet this ISP did specify one so I assume I need to enter it.  Not sure what's the right way - I get confusing results on searches telling me either to use ip default-gateway or ip default-network.  I want to think that it's as simple as entering in the IP but so far I've learned with the IOS that you never do anythign without knowing all the possible implications, which I don't.  Also while I am at it, I don't know what I should have for DNS entries.  This router will not be a DNS server for any internal systems that function will be managed by the two Windows 2008 R2 DNS machines.  The ISP has also provided two IP's for their DNS servers.  I thought it would be a simple matter of just adding two entrires via ip name-server command, which I did.  So now I have four entries, first the two internal servers (inaccessible currently due to no LAN cabing to this router), and the two ISP servers.  Can't ping those either, but again there's no default gateway. 

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Cisco Switching/Routing :: Does IOS 12.4 Basic Have (IP NAT Pool) Command Available

Sep 23, 2012

Cisco IOS 12.4 Basic check to see if the command "ip nat pool" is available?We have 12.2 basic and I know it is in the 12.4 Advanced and 15.1 Basic versions (too large of a jump in version for management).  Our budget is very limited so I am hoping that 12.4 Basic has this command.

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