Cisco Switching/Routing :: 1941w - EIGRP Continually Flapping
Nov 15, 2011This is the message that I am getting from my 1941w router. I have a isakmp tunnel built with a GRE tunnel going through it.
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Cisco WAN :: C2921 - EIGRP Flapping Through Sub Interface
May 8, 2012I get some EIGRP flapping on my CE router (c2921) 2 sub interface to another two site. The router IOS version "c2900-universalk9-mz.SPA.152-2.T1". I capture the debug log as attached. I know understand some log meaning from the debug.
View 3 Replies View RelatedCisco WAN :: 3750 EIGRP Session Flapping For Seconds / Minutes
Apr 9, 2013we are facing issue for unstability of EIGRP neighbor with ISP router.Both router are connected via 3750 switch.There is no misconfiguration or physical media issue.I found the SDM template on the middle switch is desktop default, does this will impact ? [code]
View 3 Replies View RelatedCisco Switching/Routing :: Nexus 5548 Rebooting Continually After Installing L3 Base License
Jul 30, 2012we recently purchased L3 daughter cards (N55-D160L3-V2) for our 5548UPs along with the LAN Enterprise Services licenses (N55-LAN1K9).
I installed the cards and Ent Svcs lic this past weekend and everything went well excep that I couldn't enable the EIGRP feature .. apparently EIGRP requires the LAN Base (N55-BAS1K9-BUN) license even when you have the Enterprise lic installed, so I was able to dig up that license eventually (which comes with the L3 daughter card, incidentally). Another side effect of not installing the Lan Base lic is that the L3 card/module will be in an "offline" state until the Lan Base lic is installed. Either way, everything was working normally in L2 mode at this time.
So, here I was thinking I was ready to proceed with enabling L3 - this morning I installed the LAN Base license on one of the 5548s which apparently triggered the L3 Daughter card module to go active and triggered a switch reboot. Ok, not that big of a deal, knew that was probably coming. I expected the switch to come back up normally .. NOPE. The switch went into a continual reboot cycle where the console prompt would appear, then about 30 seconds later, would reboot again.
I finally ended up re-installing the original L2 card and the switch came right up. I see that LAN Base and LAN Enterprise are both still installed as well.
What have I done wrong here? Why did the switch go into a continuous reboot cycle once I installed the LAN Base license?
Here are more details :
Software
BIOS: version 3.5.0
loader: version N/A
[Code]....
Cisco Switching/Routing :: Where To Get AP Software For 1941w
Mar 23, 2013I own a 1941w that is covered by a service contract and I'm entitled to download software for it. But unfortunately I don't see any option to download AP software for it. I need an upgrade for the internal AP to connect it to a virtual WLC.Apparently I need ap801-rcvk9w8-tar.152-2.JB.tar to get this done.I can find it under the 800w series, but I don't own a service contract for that so I can't download anything.
View 1 Replies View RelatedCisco Switching/Routing :: MGF Configuration 1941W
Dec 27, 2012I'm currently trying to get up to speed on a 1941W ISR. I belive i have most of the configuration correct based on reading the documents on this site. However, i'm noticing that my lan to lan network performance is very slow. Peaking out about 3mbs. I was reading some documentation that suggested MGF (MultiGigabit Fabric) might resolve this problem.
I have a basic setup in my test environment trying to emulate a branch deployment. 1941W connected to a access switch (3400).
- I'm getting slow perfomance (thoughput) between the vlans 66,30,10. Will MGF fix this problem? How do i configure it?
Building configuration...
Current configuration : 7474 bytes
!
! Last configuration change at 09:26:04 PCTime Fri Dec 28 2012 by xxx
! NVRAM config last updated at 09:26:05 PCTime Fri Dec 28 2012 by xxx
[Code]......
Cisco Switching/Routing :: 1941W No IP From DHCP Server With Ip-helper
Jun 12, 2013I've a Cisco 1941W router which is DHCP server for data-VLANs and uses ip-helper for voice-VLANs. [code] I don't know why I can't have IP from wireless voice VLAN whereas it is OK and wired voice VLAN and conf is the same!
View 4 Replies View RelatedCisco Switching/Routing :: 1941W - Service Module Failed
Jul 25, 2012we have approx. 70 Cisco 1941W routers deployed in our company. I used to be able to console into the internet wireless AP by issuing the below command:
service-module wlan-ap0 session
However lately this hasn't been working and AP just simply refuses connection. Here is what I have for Status. I have tried reseting the Service Module to no avail.
Router#service-module wlan-ap0 status
Service Module is Cisco wlan-ap0
Service Module supports session via TTY line 67
Service Module is failed
Service Module reset on error is disabled
Service Module heartbeat-reset is enabled
Service Module is in fail open
Service Module status is not available
Cisco Switching/Routing :: VLAN Flapping In 3750x
Sep 22, 2011I recently upgraded my network to have two 3750x core, one interface on the cisco is connecting to a Netgear switch via a fiber converter. I am keep getting the vlan flapping error message in my log as below.
View 2 Replies View RelatedCisco Switching/Routing :: HSRP Flapping On 7604?
Jul 9, 2012i have 2 cisco 7604 distrubution routers .Both routers are running 310 hsrp groups.
Sundenly there is hsrp flapping which causes high CPU.
What is the limitation of HSRP group on cisco 7604 router .Below is the show ver from the router
----------------- show version ------------------
Cisco IOS Software, c7600rsp72043_rp Software (c7600rsp72043_rp-ADVIPSERVICES-M), Version 12.2(33)SRC2, RELEASE SOFTWARE (fc2)
[Code]......
Cisco Switching/Routing :: C1240 - Mac Flapping With VLAN 25
Apr 14, 2013i have a question, i have in the logging of my switches a mac falpping problem. i have a log notification : Apr 12 19:33:13: %SW_MATM-4-MACFLAP_NOTIF: Host xxxx.f065.520c in vlan 25 is flapping between port Gi0/1 and port Fa0/35. When i look up what is connected to interface FA0/35 it is a accespoint " AIR-AP1242G-A-K9" Cisco IOS Software, C1240 Software (C1240-K9W7-M), Version 12.4(21a)JA1, RELEASE SOFTWARE (fc1)
How this is making the mac flapping ?
Cisco Switching/Routing :: 4500 / Flapping Between Ports?
Jun 27, 2012We have been receiving these notifications on one of our core.
Jun 28 12:54:01: %MAC_MOVE-SP-4-NOTIF: Host b407.f9c3.3c51 in vlan 56 is flapping between port Po5 and port Te7/2
Jun 28 12:54:01: %MAC_MOVE-SP-4-NOTIF: Host 145a.05c8.0ed3 in vlan 802 is flapping between port Te7/2 and port Po5
Jun 28 12:54:01: %MAC_MOVE-SP-4-NOTIF: Host 9463.d129.546a in vlan 56 is flapping between port Gi2/9 and port Po5
Jun 28 12:54:01: %MAC_MOVE-SP-4-NOTIF: Host 3c43.8ef3.7448 in vlan 56 is flapping between port Gi2/9 and port Po5
Jun 28 12:54:01: %MAC_MOVE-SP-4-NOTIF: Host 000e.35eb.25ae in vlan 66 is flapping between port Po5 and port Te7/2
PO5 goes to our primary wireless controller. Gi2/9 goes to a Cisco 4500 switch that also has a PO5 on it for a failover lan controller and TE7/2 is another core switch.
These mac-address all seem to point to PO 5 which is the port channel assigned to Wireless Controller interfaces.
How do I determine if this is a spanning-tree loop? No ports are err-disabled.
Cisco Switching/Routing :: 1941w Samsung Galaxy Note LTE Cannot See Wi-Fi Networks
Mar 20, 2012I have a number of devices in my house connecting without issues:
1.) PS3
2.) XBox 360
3.) HP CM1415FNW
4.) Sony Dash
5.) iPone 4g/4gs
6.) Asus EP121
7.) Six Laptops
8.) TV
9.) Denon A/V
My android cant even pickup the SSIDs, I stand beside and still nothing, the SSIDs are not hidden, Ive tried different encryptions, changed from AES to TKIP, tried different channels. I have two seperate SSIDs, one 2.4GHz with B/G/N and a 5.0 with A/N Available, neither SSID is getting picked up
Cisco Switching/Routing :: WS-6148A - Port Flapping Due To MTU Mismatch?
Jun 4, 2012We have some legacy Cisco 6513 switches with the backbone (16-port GBIC blade) MTU set to 1500. It has a WS-X6148A-GE-TX blade as well, MTU set to 9K.
Now we have a customer sending MTU of 1546, their copper interface terminating on WS-6148A keeps flapping. Does the flapping have something to do with the backbone set to 1500? We cant set the backbone to 9K at this moment since it may be intrusive (reuire a reboot).
Cisco Switching/Routing :: WS-C2960S-24TS-L / Mac Flapping On Stack?
Feb 27, 2012We have two switches WS-C2960S-24TS-L running in stack with running IOS c2960s-universalk9-mz.122-55.SE3.We have connected two checkpoint devices on Gi1/0/24 and Gi2/0/24 with a simple configuration:
interface range GigabitEthernet1/0/24, gi2/0/24
switchport access vlan x
switchport mode access
spanning-tree portfast
On the devices log we get the following message:
%SW_MATM-4-MACFLAP_NOTIF: Host 0000.0000.fe21 in vlan x is flapping between port Gi2/0/24 and port Gi1/0/24
The mac-address 0000.0000.fe21 is not found on any checkpoint interface. "Show mac-address int gi1/0/24 or gi2/0/24" does not show the correct mac-address of the checkpoint interface connected to the port, but instead shows 0000.0000.fe21.Is there a bug in the IOS, something wrong with the switch config or does it have something to do with the checkpoint config?
Cisco Switching/Routing :: 3750G Access Layer Mac Flapping
Mar 28, 2013Lately I have been noticing mac flap messages on some of our access layer 3750G switches. Just a little background on how this is setup.
These 3750G switches are stacked and uplinked to a distribution layer 3750E stack (2 switches) via cross stacked etherchannel. (Usually 4 links) The access layer switches are stricly layer 2 where the distribution layer 3750E is routing the VLANs at the access layer to to the core 6500 switches.
I have just about ruled out physical loops on these stacks for the reason that the Macs are flapping. I am seeing this on two different stacks now each having 3 switches in the stack at the access layer. The cross stack etherchannel is spanned across the first two switches at the access layer and connected to both switches at the distribution layer. I have checked the etherchannel status and all ports appear to be part of the etherchannel and they appear fine.
The mac addressses that are flapping are just plain old desktop machines that plug directly into the access layer. I usually see this when the mac is learned on a port such as when a machine is plugged into the network or reboots.
Cisco Switching/Routing :: 4506e Host Flapping Between Ports
Dec 6, 2012Two days back my entire network was behaving in unusual ways.When is connect to core switc(4506e) through console. [code]
View 11 Replies View RelatedCisco Switching/Routing :: 4507 - SNMP Configuration For Mac Flapping?
Mar 5, 2013Would like to ask whats the correct snmp config so that it will send to our snmp server when a mac flapping occurs on a cisco switch specifically 4507 switches.
View 6 Replies View RelatedCisco Switching / Routing :: 3550 - Line Protocol Flapping
Aug 27, 2012I work for a Wireless ISP and the device impacted is the back haul radio into the site. I have swapped from a 2950T to a 3550. Replaced the radio, PoE, patch lead. We have re ran the cable up the tower using shielded outdoor cable with a drain wire which has been earthed to an earthing block in the cabinet. We have other devices on the tower not experiencing the issue. We suspect cable interference however am now at a loss to diagnose further.
[Code]....
Cisco Switching/Routing :: 2960 Switch Ports Flapping
Feb 4, 2013I have a 2960 switch and every then and now the ports are flapping, while i was on console i saw ports going down and coming up...when the ping to machine ip addresses timed out the port status on switch was still up...no errors collisions seen on sw port. Below is sh int when the port was flapping
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Cisco Switching/Routing :: 6509 Vlan Flapping Between Port-channels
Mar 10, 2012We have a pair Cisco 6509 switch in which 2 * 48 Port 1G line cards and 1 * 16 Port 10G line Card, FWSM and Sup 720 are installed.We have Cisco UCS and HP Blade servers.Cisco UCS servers are connected to Cisco 6509 switch using Fabric Interconnect, and HP Servers are directly connected to core switches.Recently the team made many changes in the network. Upgraded the IOS in Cisco 6509 switch, Configured Port profiling , MAC Pinning , HBA Cards to UCS / Nexus 1000V Infrastructure. After this change they lost the connectivity to UCS and HP Serers. Every tower is checking at their end.
The Network Team has reverted back the core switch with old IOS , but still the problem persisit.I could only see the following error log in the core switch. There are two port-channels one between core 1 and core 2. The other is between core switch and FWSM module. [code]
Cisco Switching/Routing :: Flapping Between Router (2811) And Switch (2960)
Jul 23, 2012we have cisco 2960 switch which is connected to a cisco 2811 router. flapping issue between these two devices??
The following actions i have taken, but no result.. I have changed cables. have set speed to 100 and duplex full on both the interfaces but the interfaces are showing up up still not getting connectivity. same i have to auto on both sides still no result what configurations should i set to resolve this issue...?
Cisco Switching/Routing :: 2690 / 1811 - Port Flapping With Log DTP-5-Nontrunkporton
Oct 2, 2012I have Cisco 1811 and Cisco 2960 interconnect with each other by TRUNK link. As time pass i recieving below log on cisco 1811 router.
DTP-5-NONTRUNKPORTON: Port Fa8 has become non-trunk
LINEPROTO-5-UPDOWN: Line protocol on Interface FastEtherne t8, changed state to down
LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan100, changed state to down
LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan200, changed state to down
LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan300, changed state to down
LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan400, changed state to down
Cisco Switching/Routing :: 3750 - VLAN Flapping Error Message
Sep 15, 2012I recently upgraded my network to have two 3750x core, one interface on the Cisco is connecting to a Net gear switch via a fiber converter. I am keep getting the vlan flapping error message in my log as below.
003396: Sep 17 01:46:16.328: %SW_MATM-4-MACFLAP_NOTIF: Host 5c0e.8ba7.0a5c in vlan 2 is flapping between port Gi2/0/15 and port Gi2/0/13
003397: Sep 17 01:46:19.843: %SW_MATM-4-MACFLAP_NOTIF: Host 5c0e.8ba7.0a5c in vlan 2 is flapping between port Gi2/0/15 and port Gi2/0/13
003400: Sep 17 01:49:58.769: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet2/0/17, changed state to down
[Code] .....
After my research i think this is a looping issue but I'm unsure how to address it.
Cisco Switching/Routing :: WS6724-SFP / Flapping Interfaces With Service Policy
Jun 2, 2013i just configured a C6K VSS with Sup2T, 15.1SY IOS software and a WS6724-SFP module with the follwing cos config:
auto qos default
table-map cos-discard-class-map
map from 0 to 0
map from 1 to 8
map from 2 to 16
[code]....
After applying the service policy to one interfac of the WS6724-SFP module the policy is deployed to all interfaces of the module. So far it should be ok but after a short time all interface of the module begin to go down an up and down and up ... flapping.
Cisco Switching/Routing :: STP Stops Loops But R-PVST Goes Flapping 2960
Feb 22, 2012Stange problem which I encountered today, I have a Cisco 2960 which is connected to a netgear. The switch started showing itself in CDP and was running STP. I checked the cables physically today and noted 3 uplinks to the netgear, all port on the Cisco active and forwarding and green lights.
The Cisco was running STP, I changed it to R-PVST and the lights on the Cisco went crazy and I got the message port flapping on the switch but the switch did not block any ports (all ports on same vlan).
There after I changed it back to stp and the switch blocked the other up links apart from one.
Sure R-PVST is far superior than STP?
Cisco Switching/Routing :: Open Specific Ports On 1941w Integrated Services Router
Apr 20, 2013open specific ports on 1941w Integrated Services Router.This specific router is a wireless VPN router that has a wired module and a wireless module and VPN so I'm getting 3 subnets on my network - 192.168.1.. for the wired connections, 10.100.1.... for wireless LAN connections and 10.100.2... for VPN remote connections.I know that by default all connected computers can access my Linux server data through telnet so the telnet port is open by default, the problem is that I have some other software licensing system on my Linux box that needs to be accessed through port 27000 and most of my users are using wireless connections and can't access that license because post 27000 is closed.what is the comand to open this post or any other port that I need to be open on the wired module, wireless module and VPN or at least poit me to somewhere where I can find all the commands that I can use for this router?
View 6 Replies View RelatedCisco Switching/Routing :: Error Message Ports Flapping On 3750 Stack
Aug 27, 2012I am receiving the following error message on a Cisco 3750 switch stack. Need troubleshooting this error message.
00:03:13: %SW_MATM-4-MACFLAP_NOTIF: Host 00d0.7400.2730 in vlan 600 is flapping between port Gi2/0/3 and port Gi2/0/2
Cisco Switching/Routing :: 6509E Port-channel Flapping When Two More Links Are Added?
Sep 11, 2012I have two Core 6509E SUP2T configued as VSS and has two 48 ports fiber blades. I have two 3750s, I have two gig on each 3750 port-channle to po1 and connected to both the core, one link to each core.Now, I was asked ot add two more links on each 3750 switch to make it a total of 4 gigs on each 3750s (all 4 gig ports/uplinks will be in used an dtwo links to core one an dtwo links to core 2).when i added two additional links on 3750s and bundled them to po1, I created another port channel on core and bundeled the additional two gigs on each core to accomodate for the two additional links (ports on core switches are not consequtives).
adding these two additional ports makes the 3750 switches flap between managemnet vlan and po1.now, i am not sure if I must have added the two additional links on the core to teh current port-channel or core!? I have created another port-channel on core to accomodate for this currently!?
Cisco Switching/Routing :: 3750 Stack To Upstream ISP Separate Switches - MAC Flapping
Mar 11, 2012I have an issue with a Cisco 3750 switch stack which is connected to two seperate upstream Cisco 3750's which are administered by an ISP. The ISP is experiencing MAC address flapping from one of my VLAN SVI's i am using to route traffic upstream
[code]...
As you can see I utilise a VLAN SVI to route traffic to the upstream 1.1.1.2 (illustration only) IP. As per the diagram of the topology attached, the ISP is receiving a MAC address flapping error confirming the SVI MAC address from my switch stack is being learnt on the trunk port connecting switch 1 and switch 2, and also the port (Gi1/0/48) directly connected to my switch stack. As these are all Layer 2 links essentially being passed upstream and then connected between the two ISP switches, we have a 3 way triangular loop formed.
If I was to remove the port channel configuration from the two ports associated with the VLAN SVI, am i right in suggesting this would still form a layer 2 loop? The two ports would still be a member of the SVI VLAN, and it is the VLAN MAC address which is being learnt by the two ISP switches on different interfaces.
Cisco Switching/Routing :: Standby Blade Switch 3030 Upstream Port-channel Flapping Up-down
Apr 30, 2012show logging
May 1 16:00:30: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/12, changed state to down
May 1 16:00:39: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/12, changed state to up
May 1 16:17:28: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/12, changed state to down
May 1 16:17:36: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/12, changed state to up
May 1 16:25:28: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/11, changed state to down
May 1 16:25:37: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/11, changed state to up
May 1 17:19:25: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/11, changed state to down
Configuration as below:
macro name vmware
switchport trunk encapsulation dot1q
switchport mode trunk
no switchport access vlan
[code].....
Note:Both active blade switch and standby one are connecting to same aggregate switch 3750. Yet the active one, with same config as standby one, has not occurred this issue.
Cisco Switching/Routing :: GNS3 - Stub Router Not Updating Routing Table - EIGRP
Nov 14, 2012We have small which I'm looking to implement and have built this on GNS3.
We have:
Router A in site 1
Router B in site 2
Router C in site 3
Router A and B are connection via a point to point 100M link and from Router C we have a 2 point to point one of which is 5Mpbs and going to Router A and Router B.
For Router C to reach Router A network it will go via Router B and these are 100M connection. When the link between Router A and B goes down. Router C should update and start using the 5m route.
For some reson, the routes are not updating. I have to do 'clea ip eigrp ne' for the routes to update and if I reload the routers all works well, it seems the problem is intermittent.
Cisco Switching/Routing :: OSPF Or EIGRP On 851 Or 861?
Dec 14, 2011Does 800 series routers support OSPF or EIGRP? Command for EIGRP is available but when you try to run it, you get that "protocol is not available in the image". Is there a specific image that I can get that will support either of these two on a Cisco 851 or 861?
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