Cisco Switching/Routing :: 4506E Interface To Reset And Drop Connections

Dec 29, 2011

I started having connectivity issues between my core 4506E (Sup7E) and Cisco 2960S. There were input and CRC errors on Te int (SFP 10Gb - LRM) on 2960S, which cause the interface to reset and drop connections. While troubleshooting this issue, I have replaced patch cords and also had the tech checking the fiber. He said that there was some residue on one of the connectors, so the light levels fluctuated in 1300nm, but worked fine in 850. Well LRMs are using 1300, so he re-polished the tips, which worked to stabilize the light levels. After all that, I was still receiving the input/CRC errors, but the connection was NOT dropping. As my last resort I swapped the SFPs between the core and 2960, thinking I should start having issues on the core end. Well, here's what happened: I stopped receiving input/CRC errors on 2960 (also no errors on the core), but 2960s started generating Rx power high alarms: [code]

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Cisco Switching/Routing :: 4506E After Reload Switch / Found That Clock Is Getting Reset

Apr 22, 2012

I have one 4506E switch working in Lan setup as a core switch with WS-X45-SUP6L-E running ipbase IOS 12.2(54)SG1. Each time after reload the switch we found that the clock is getting reset ( time is getting changed ) where as day, date & year is unchanged.

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Cisco Switching/Routing :: 3750 To 4506E Trunk Connection?

Sep 26, 2012

Cisco 4506-E port configuration
 WESTERN-4506-01#show int g4/47
GigabitEthernet4/47 is down, line protocol is down (notconnect)
  Hardware is Gigabit Ethernet Port, address is 0022.554c.01fe (
fe)
  Description: Trunk to 425

[code]....
 
Cisco 3750 Configuration

interface FastEthernet1/0/1description 425Linkswitchport trunk encapsulation dot1qswitchport trunk native vlan 30switchport trunk allowed vlan 30,35switchport mode trunkswitchport nonegotiateswitchport port-security aging time 2switchport port-security violation restrictswitchport port-security aging type inactivitystorm-control broadcast level pps 300storm-control multicast level pps 300storm-control action trapmacro description cisco-desktopmac access-group AuthorizedHosts in
 
I have mac address' populated. I can see the device in layout on CNA with the proper name however cannot ping it.

4506 is 10.30.30.1
3750 is 10.30.30.2

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Cisco Switching/Routing :: 4506e Host Flapping Between Ports

Dec 6, 2012

Two days back my entire network was behaving in unusual ways.When is connect to core switc(4506e) through console. [code]

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Cisco Switching/Routing :: 2960 Switches - IOS Upgrading For 4506e

Jul 21, 2012

I have 4506e core switch to which 10 other 2960 switches are connected.I want to upgrade thier IOS. how can upgrade it, can I upgrade it one by one or all at a time?
 
Is there any tool to perform this task?

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Cisco Switching/Routing :: 4506E Switch Power Supply Upgrade

Dec 8, 2012

I would like to check if it may be possible to hot-upgrade/swap the 4506E power supplies? Based on the configuration guide; I have summarized the steps as follows:

1. Switch has 2 existing power supplies to be upgraded

2. Remove right side/bay 2 power supply and install new power supply

3. At this point; the new power supply will be in err-disabled due to different power supplies on the switch

4. Remove the left side power supply and install new power supply

For item 4; during the removal of the old power supply in bay 1/left side and installation of the new power supply; I am wondering if the switch would lose power even though the new power supply is installed in bay 2?

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Cisco Switching/Routing :: HSRP Group Limit In 4506E Switch?

Oct 31, 2012

I have two cisco 4506-E series switches ..
 
We are planning to go for HSRP redundancy for 32 VLANs. Means In a Cisco 4506-E switch , we will configure 32 vlans and among them 16 vlans will be primary and 16VLANs will be standby ans it is viceversa in another core-switch
 
My querie is How many standby groups can we create in Cisco 4506-E switch,
Is there any limitation..
 
If there is any limitation , can we go ahead with VRRP,GLBP? Are there any limitation in VRRP/GLBP? Is there any design related issue can we face if we use same group number to all VLANs?
 
Product details :
 
Model : Cisco 4506-E
Sup Model : WS-X45-SUP6L-E
IOS  : S45EIPBK9-12254SG

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Cisco Switching/Routing :: Catalyst 4506e - Booting In ROMmon Mode?

Dec 12, 2012

I have a Catalyst 4506e that works fine but if reload, it boots in rommon mode. I can start it with a boot command, but by default, i must type a command. My config-register is 0x2102.

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Cisco Switching/Routing :: Catalyst 4506E Switch - Running L2 Metro Features

Sep 10, 2012

I think choose this SWITCH 4506-E and I need running only features L2 Metro, but Idont known what IOS for this!

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Cisco Switching/Routing :: Limit Bandwidth On A Gig Port Of 2960 Or 4506e Switch?

Apr 4, 2012

how can i limit bandwidth on a gig port of 2960 or 4506e switch?

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Cisco Switching/Routing :: 4506e Start-up Config Backup To Tftp Server

Mar 15, 2012

how can i take backup of startup config to tftp server through tftpd server.I am using 4506e switch

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Cisco Switching/Routing :: WS-C2950-24 - What Last Reset From System-reset Means

Dec 10, 2012

Does any know what " Last reset from system-reset " means? Is this becouse of a power failure or someone reloading the switch?

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Cisco Switching/Routing :: 4506E Any Free CPU Process Monitoring Tools To Identify Which Process Is Spiking

Oct 9, 2012

I have two core switches - 4506E, and i noticed there are frequent cpu spikes on both of the cores switches. As its spikes intermitendly i couldnt able to anlyze the issue. I need inputs on the following,
 
1) Is there any Free CPU process monitoring tools to identify which process is spiking ?

2) Troubleshooting techniques to identify the issue.

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Cisco Firewall :: ASA 5550 Proxy Inspector Drop Reset

Dec 19, 2012

Outside users with certain public ip addresses are not able to access our website.  Below is a log from our ASA 5550 8.2(5)  on one of the clients that's being dropped.  Packet trace result shows that the outside public addresses are allowed.  We do have a TAC case open.

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Linksys E3000 Drop All Connections

Feb 28, 2011

I had a Linksys Wireless-G router for a long time and had very good luck with it. However, I ended up getting a couple of Wireless-N devices and wanted to get a different router. I bought the Linksys E3000. I got it home and set it up, and at first it worked. Then it would all of a sudden drop everything connected to it. I would restart the router, and in short order it would drop all connections again. This completely baffled me for awhile, until I actually touched the bottom of the router, and it was quite hot. I had it laying flat on a a table, so I could never understand why it was getting so hot. Anyway...I stood it up on it's side and it worked for awhile. Then it would randomly drop various things connected to it. The last straw was when I was listening to internet on the Apple TV, while viewing the internet on my PC and it started dropping the connection every five minutes. Anyway, I have now hooked my Wireless-G Linksys back up and it is working great.

is Wireless-N even needed? I live in a small place, so I don't need it to reach a long distance, and I don't transfer a tremendous amount of date wirelessly, so that doesn't really matter. Should I even try to fix this router? I looked on the Linksys page and I am running the newest firmware.

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D-Link DIR-615 :: Starts To Drop Connections Occasionally

Apr 20, 2011

I had a D-link DSL-G604T router which recently had begun to drop connections, so I decided it was time for an upgrade. I bought a D-link DIR-615 and followed the instructions on the CD, but no internet connection. After several hours of hair pulling I came accross a solution; If I connected the internet port on the DIR-615 to one of the ethernet ports on the DSL-G604T using an ethernet cable I could then connect to the internet.However this defeats the point of having a new router if I have to use the old one to connect to the internet.Is there a way to configure the DIR-615 so that is works properly?

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D-Link DIR-655 :: Router Drop Connections After Upgrade

Dec 30, 2010

I recently upgraded my network because my DIR-655 started to drop connections.  My new routers (a Netgear ProSafe VPN Firewall SRXN3205) is working great, but I'd like to re-purpose my D-Link as a wireless bridge.  

According to Netgear support, I need to link my DIR-655 to another access point connected to the network over wired Ethernet.  No problem there; I have a DAP-1522 connected via Ethernet on the floor directly below the location of the DIR-655.  I was under the impression that although the signal was going through the floor, the physical distance to between the two devices would be sufficient to make the connection.  No joy.  I use the push-to-connect buttons on the two devices, but they do not connect.  Is the floor the only issue?  I do have an ANT-24 antenna extension for the DIR-655 router -- would that make any difference.  As I say, the physical distance between the two devices is less than 10 feet.

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Cisco Switching/Routing :: 6509 Randomly Drop Packet

Nov 1, 2012

My workstation(10.0.0.250) directly connected to 6509_1 switch. 6509_1 is gateway with ip 10.0.0.5/22. Sometimes routing stop working, but after 3-5 minutes all back to normal.When issue occur i can't ssh to 6509_1, but i connect to second 6509_2 (10.0.0.6) and i can ssh to 6509_1 from it.Then form 6509_1 i try to ping my workstation Wireshark on my workstation show that packet arrive. My workstation reply on it, but switch not accept it.How it possible? As I say after sometime all go back to normal without any changes. [code]

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Cisco Switching/Routing :: N7K No Drop In Service To Existing VLAN

Aug 8, 2012

When you use the command switchport trunk allowed vlan add [vlan-id]There should be no drop in service to the existing VLANs, correct?  I am trunking from a 7K to a 2960S via 2G PoCh.

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Cisco Switching/Routing :: Multicast Data Drop On 3750X?

Apr 23, 2012

We are currently experiencing random multicast data dropouts on ports that are connected to a 3750X in VLAN ports. A test PC was connected to a routed port and we do not have any dropouts of the multicast data.We also took a 2960G and plugged it into VLAN ports on the 3750X.  Any test PC that is on the 2960G does not lose traffic. The traffic only drops on PCs that are connected to a port on the 3750X that is in a VLAN.  The data drops are random and last approximatly 55-59 seconds before we start receiving multicast traffic again.
 
I do not see any input/output errors on the interfacessh platform port-asic stat drop also show no drops
 
CPU runs at about 50% on the 3750X
 
Below is the configuration of the 3750X
Building configuration...
Current configuration : 8454!!version 12.2no service padservice timestamps debug datetime msecservice timestamps log datetime msecservice password-

[Code]......

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Cisco Switching/Routing :: Trigger Packet Drop On WS-C4948

Feb 25, 2013

I am running  (cat4500-ENTSERVICES-M), Version 12.2(53)SG2 on the switch. I have a scenario where I have 3 end user equipments connected to a Cisco 4948 L3 switch. At the switch end port 1/46, 1/47, 1/48 are the terminating points for these 3 devices . I have added these three ports to VLAN140 (switch port access vlan140 on the gig interfaces).

The device connected to 1/46 is the one I'm testing some signalling features on. My requirement is to have intermittent packet drop on this interface so that my signalling associations would go down now and then. I'm trying to simulate a real-time network congestion/latency/packet drop in a simple manner.

I do not want to shut/no shut the 1/46 intf to cause this. Some way to achieve intermittent packet drop on this gig1/46 intf ?

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Cisco Switching/Routing :: C3560 Output Drop Without MLS QoS Enabled

Nov 24, 2012

We are seeing output drops on a C3560 switchport, this port does not have QoS enabled -- application does not need special qos treatment, as long as packets are not droppd, so I suppose all traffic will share the same queue? then how should I read the output of "show platform port-asic stats drop" which indicates that it is queue 3 weight 2 drop? I am wondering what is the best way to fix this? enable mls QoS and increase queue 3 bandwidth share on this interface or just increase the output queue depth?
 
switch#sh mls qos interface gi0/1
GigabitEthernet0/1
QoS is disabled. When QoS is enabled, following settings will be applied
trust state: not trusted

[Code]......

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Cisco Switching/Routing :: 2960 S Supervisor TxQueue Drop Statistics

Jul 25, 2012

I have users connected to a 2960-S running 12.2(53r)SE complaining of slow network, specifically Internet performance while the upstream 2960 on the same vlan has no such issues, so I don't suspect link congestion on the face of things.I'm planning on upgrading the code, but wanted to see what could be checked first. I'm seeing some drops but could use some tips on how to proceed from here as to what might be the issue. CPU is under 10% whenever I check it.

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Cisco Switching/Routing :: 3845 Output Packet Drop In Some Of Interfaces

Nov 27, 2011

In my cisco 3845 router I can see output packet drop in some of the interfaces.I suspect that router is processing packet beyond its mix throughput limit. Moreover when i run show int fax/y switching command I can see packet drop by RP process.

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Cisco Switching/Routing :: WS-C3560CG-8TC-S / Speed Reduced And Drop Packets With QoS?

Apr 11, 2012

I put a QoS in a  WS-C3560CG-8TC-S  version 12.2(55)EX2.  in our lab file upload or download speed much reduced and drop the packets with QoS everyting is fine without QoS
 
Here is the config: My question is why I speed reduced a lot and packets to be dropped with QoS.everything is fine WITHOUT QoS.

class-map match-any VoIP  description Voice IP Phone RTPmatch access-group 157
class-map match-any WEB  description Internal Web, SSL Web, DNS query, Pinnaclematch access-group 153
!
policy-map QOSMARK
class VoIP  set dscp ef
 class WEB  set dscp cs3

[code]....

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Cisco Switching/Routing :: 1760 / Make Router To Drop Packets Instead Of Rejecting Them?

Mar 31, 2012

I've got a 1760 router which uses port forwarding (25, 80 and 443) for my internal network services. If, let's say, I try to open a FTP connection on the router, of course the connection will be refused. Is there a way to make the router DROP the packets instead of rejecting them? My Linux iptables configurations drop packets who fail the firewall test, so I would like the router to perform that behavior.Commands for port forwarding:ip nat inside source static tcp 10.10.0.1 80 int f0/0 80 (these work fine)

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Cisco Switching/Routing :: 6500 - Randomly Devices Will Drop Offline And Then Come Back

Aug 28, 2012

I have a network that has a pair of 6500 switches on either end, running HSRP. In between each 6500 are two to three ruggedcom switches. They are connected to each other and the 6500's by trunk ports in a straight line. The 6500's see each other as CDP neighbors, and the 6500's can see the rugged- com as LLDP neighbors (ruggedcom only supports LLDP).
 
The issue is that randomly devices on the ruggedcoms will drop offline and then come back. The problem is that the devices that drop offline are all in the same VLAN, so it appears like a virus -  i.e. one device drops off, then multiple. Eventually the HSRP starts flapping between the two 6500s and this causes havoc on the network.I'm almost to the point of taking a laptop and plugging it into one of the ruggedcom's to see traffic, but the issue is that the ruggedcoms are outside in cabinets that laptops shouldnt be exposed to.

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Cisco Switching/Routing :: WS-C2960S Output Drop Values Change Randomly

Oct 19, 2011

I have a stack of 4 Cisco WS-C2960S-48FPS-L switches running c2960s-universalk9-mz.122-58.SE1 code.  One of our network monitoring tools is indicating discards on a certain port on the switch.  Upon further investigation I am seeing the Total output drops values change in a very odd manner.
 
The numbers seem to go from 573 to 1146 to 1719 then back down to 573 and it starts the same pattern over: [code]

The port utilization is quite low, the highest I've seen over the past 7 days is 3.5% with a polling period of every 30 seconds using Statseeker.  Yet the discards are bouncing all over the place.
 
I've searched though the bugs for 12.2(58)SE1 and didn't see anything.

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Cisco Switching/Routing :: 3950 - High Latency And Packet Drop Towards Access Switches?

Jan 27, 2013

My network Infrastructure consists of 2 core switches(cisco 3950, 24 port) and 3 access switches (cisco 2960G, 48port). No distribution layer.Both Core switches are connected to the BVI of a VPN router.PVST is running in all switches. The STP results are all good. We have 3 VLAN's in the LAN an IP routing is enables in the core switch. The network diagram is attached.
 
The issue we are facing is that , we get intermittent packet drops while pinging towards the access switches, and there is always a higher latency towards these assess switches.These issues are present even with no other users using the LAN. But these issues are not present while pinging towards the GW.
 
I guess, it is because of this, we have issues the accessing file server in the LAN. How do we go ahead with the troubleshooting. Will upgrading the IOS resolve this.The present version details is..
 
WS-C2960G-48TC-L   12.2(44)SE6           C2960-LANBASEK9-M

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Cisco Firewall :: ASA 5510 High Drop Count On Management Interface

Sep 4, 2012

I have a 5510 FW in multi-context mode that is showing a high drop count on the Management interface in the Admin context.

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Cisco Wireless :: 1552E - Setting Up Mac Filter / Drop Down Selection For Interface Name

Mar 12, 2013

We have a number of 1552e's deployed as RAP / MAPs, using a 5508 WLC. All those are working fine.I have a few requirements for an outdoor access point... not a RAP or MAP, but just a simple outdoor AP. I assume that if I use a 1552e for that requirement, I would place the mode in local, rather than in bridge mode, correct ? Also, a question on mac filtering.  When setting up the mac filter, there is a drop down selection for "interface name".  The radios seem to work fine with "none" selected, so I'm confused about what exactly that selection is doing.  Is it simply a reference lable, or does it actually have a purpose?

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Cisco Switching/Routing :: 6500 - Show Platform Port-asic Stats Drop Command?

Feb 21, 2012

On a 3750 you can do a show platform port-asic stats drop command.  Is there a corresponding command for 6500 chassis?

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Cisco Switching/Routing :: ASA 5505 Cannot Ping From Inside Interface To Outside Interface

May 1, 2012

I have a Cisco ASA 5505 and I have my internal and external interfaces configured but I currently cannot ping from the inside to an IP Address on the outside.  I had this setup and working and I have another set of equirement that I am replacing that is working with my service provider so I know it is a configuration issue.  When I ping 4.2.2.2 for example I get:
 
Destination host unreachable
 
Do I need to add a static route from my inside interface to my outside interfaces?   

: Saved
:
ASA Version 8.2(5)
!
hostname pxasa

[Code].....

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