Cisco Switching/Routing :: 3945 Loose Connection Between Router And Switch
Jun 29, 2012
We are having problems with a two router 3945 in HSRP and a switch 2960.The two routers are connected to the switch 2960 through differentes ports. The problem is that we loose connection between the router and the switch.When we excute the command: show cdp neighbor at router, it shows nothing.If we try to make ping to the 2960 switch it is no reachable.If we make ping to the other router 3945 it is not reachable.All other function of the router are o.k.We are attaching the IOS of the routers and switch 2960 and a document in which make reference to a BUG in which mention about arp overwrite due arp attack which produce DoS.
View 2 Replies
ADVERTISEMENT
Dec 2, 2012
the router IPSec VPN config for remote users using Cisco VPN Client 5.0.07
Router 3945 IOS C3900-UNIVERSALK9-M Version 15.1(4)M4
Here is VPN related config part and log from router and client.
aaa new-model
!
!
aaa authentication login default none
aaa authorization network default none
!
!
crypto isakmp policy 5
encr aes 256
authentication pre-share
[Code]...
I highlighted strings with possible problems of of unabling to connect but doesn't know what to do with it.
View 4 Replies
View Related
May 20, 2010
I understand that the password has to be changed the first time we login to Cisco 3945 router but i failed to do that and its not allowing me to connect using default username/password.
View 7 Replies
View Related
Oct 11, 2011
We have Cisco 3945 Router with SM-ES3-24P Switch Module. when we tried to configure routing in Router and Layer 3 ports on Switch module, the inter-communicaiton is not working?
how we can use routing in 3945 with SM-ES3-24P module?
View 2 Replies
View Related
Mar 20, 2013
I have a EA3500 and my wireless computers keep getting disconnected about every ten to fifteen minuets. I have the newest firmware. My android phone also is having the same issue. My internet connection is stable and my wired connections do not get disconnected at all at any time. Is there something I need to setup in the configuration to resolve this?
View 1 Replies
View Related
Apr 10, 2012
I am using DHCP/TFTP to autoconfigure a 3945 router. The router properly obtains an IP address and finds the correct TFTP server. The issue lies in the download of the configuration file from the TFTP server. The router downloads the file, gives the "Ok" message, and prompts you to press Return to get started. When I view the running-config, several commands are missing from the Serial 0/0/0 section (HWIC-2T). If I modify the config file on the TFTP server to use Serial 0/0/1 instead and repeat the process, the configuration file loads without any issues and Serial 0/0/1 has all of the commands.
I also tried moving syntax around in my config file, but the end result is still the same. If I use Serial0/0/0 - I don't get all of the commands. If I use Serial 0/0/1, I do.
View 1 Replies
View Related
Jan 22, 2013
I already mention on another topic that I have problems with my Nokia 500 wireless connection with the router. From time to time (in some cases after few seconds since the connection was made) it's loosing the connectivity with the router. Normally it's loosing the connectivity when the connection it's not used by any phone application.Is this normal? I want to mention that the power saving function of the phone it's disabled so the problem can be from the router.I already tried TPIK only but no success.
The router has the following setings:
- Enable Auto Channel Selection - checked
-Transmission Rate : automatic
- WMM Enable: checked for QoS
- Cipher Type : auto
- PSK / EAP : PSK
Advanced wireless:
- Beacon interval : 100
- RTS Threshold : 2346
- Fragmentation : 2346
- DTIM interval : 1
- Preamble Type : Short
- CTS Mode : Auto
- Wireless Mode : n/g/b
- Band Width : Auto
View 5 Replies
View Related
Feb 22, 2011
I've purchased and am trying to use a Dir-655 rev. B, running firmware 2.00NA. I have two hard-drive style Apple Tv's. They can see my wireless network, and after putting in the passcode, can connect. They at this point are visible to iTunes and can play any/all of my content. However after a period of non-use, they go into standby mode, and upon waking, can no longer connect to my network. I have to re-do the wireless each and every time
View 5 Replies
View Related
May 1, 2013
I have a 3945 router with two interfaces connected to my firewall, one to the management interface and another to my dmz. I'm running eigrp between all my network devices. The problem I'm running into is when I try to ssh to the management interface of the 3945 the traffice hits the firewall, then goes right to the management interface as it should, but the return traffic is trying to use the dmz interface since that is how the router knows to get back to my computers network. I created 2 route-maps to try and address this issue. [code] I've applied the MANAGE_IN route-map to all interfaces that might have inbound traffic destined for the management network and applied the MANAGE_OUT route-map to the management interface. The MANAGE_IN policy appears to be functioning correctly, the MANAGE_OUT doesn't appear to be functioning correctly. When I look at traffic from my host going to the management interface I see it still trying to return through the dmz interface.
View 11 Replies
View Related
Nov 26, 2012
I currently have a Cisco 3945 router deployed and I am reaching the CPU's max during peak usage. The 3945 supports ~500Mbps Fast/CEF Switching and I need something at least double that capacity.
I need the ability to have at least 8 RJ-45 10/100/1000 connections. I also need the ability to NAT.
View 13 Replies
View Related
May 20, 2013
if the Cisco 3945 router requires any license for it to run HSRP. Also advise which IOS runs HSRP on the 3845 router.
View 3 Replies
View Related
Jan 30, 2013
terms of Performance for 3925, 3925E and 3945.
didn't see much different between 3925 and 3925E except an additional port.
View 5 Replies
View Related
Jan 18, 2012
I'm having a problem with my WCG200 wireless gateway. I can sucessfully use it to connect to the internet using the wireless feature but only for a short time (10-30min at a time). Eventually, I loose the connection. I'm not sure if it's a modem issue or an ISP issue but only one of my two laptops has this trouble.
Symptom: Connecting with a Dell Lattitude E5520 laptop It works normally until the "US" and "Online" LEDs turn off and only the DS light is left blinking. At that time I no longer have a connection to the internet. Once I cycle power on the WCG200 it re-connects and works for a while, then the same issue repeats. I cleared the modem log and let the failure occur again to record the fresh log.
I attached the Modem Log in case that would troubleshoot. I've got the security of the modem set to allow the laptops MAC addresses and using WPA-personal / TKIP encryption. I never had this problem until I started using a new laptop, I'm starting to suspect that my ISP is disconnecting that laptop for some reason ?
View 3 Replies
View Related
Jun 30, 2011
I have battling this issue since I bought this router, at least 2 years.
Using:
DIR-615
PC XP Wired
2 Acer laptops Vista wireless
All DHCP reserved
Security using wpa_psk
Not sure what other router info you need. All are connected to the internet, but can't see each other on the LAN. We can see each other from time to time. Sharing is allowed. Passwords are shared. I can power off the router and the network will be fine for about a day, then gone again. Workgroups are the same.
View 14 Replies
View Related
Jan 11, 2012
CBWFQ kicks in when the interface becomes congested and there is no available space in the queue but I need to find a solution to the scenario below:Im using a Gigabit interface on the 3945 Router that connects to the ISP. The ISP limits bandwidth to 60Mb so I need to make sure when I reach the limit of the 60Mb the router starts using the BW percentages defined in the policy-map using classes. any kind of traffic go out as it wants but as soon as the 60Mb limit is reached, the priorities defined by the traffic classes will kick in just as if the interface ran out of queues (as CBWFQ usually works).
View 7 Replies
View Related
Aug 4, 2012
connecting a Cisco 3945 Router to an Ethernet WAN Link. The service provider has provided a 100M Ethernet Single Mode Fiber handoff to the customer premises with SC Connector. The CPE configuration proposed for this setup is like this. [code]
Since the SFP has LC Connector, i suppose i need to have an SC-LC Cable for connecting the Ethernet link. Do i need anything else, apart from above?
View 1 Replies
View Related
Jan 22, 2012
I've a 7206VXR (NPE-G1) router. I would like to purchase a PA-GE port adaptor where I've to use a GBIC connector.
1. Is it possible to have a connection between PA-GE and a 3560G switch (4 SFP ports)? If yes, what type of cables & connectors are to be used?
2. Is there any GigabitEthernet port adaptors / modules for 7206vxr where I can connect RJ45 (cat 5) or SFP modules?
View 4 Replies
View Related
May 21, 2012
i have an OM1 MMF fiber run between two switches, the first being a 3750 and the second being a 3550.
The link currently exceeds the maximum distance for OM1 @ 1000Mb/s (220m) so i would like to downgrade the link to 100FX using the necessary SFP's/GBIC's to extend the maximum distance to 550m and run the link @ 100Mb/s.
I have the part code for the 100FX SFP to install in the 3750 (GLC-GE-100FX) but cant find a 100FX GBIC for the 3550, can I use a 1000SX GBIC (WS-G5484) for the 3550 at one end and the 100FX SFP at the other? Any success with this configuration over MMF?
View 3 Replies
View Related
Jan 7, 2013
I have a big doubt. Can I connect a LAN switch (i.e. 2960, 3560 or 3750) to a couple of Nexus 2000 FEX (i.e 2232P or 2248TP) and have a Port-Channel or vPC with STP active and several VLANs through this Port-Channel? Or Can I only connect servers to these N2K FEX?
View 3 Replies
View Related
Jan 2, 2013
I have a problem with my switch. The model no. of the switch is as follows:
Linksys SRW2048 10/100/1000 48 Ports
Serial No: RJT00GC00395 GGR2906 MM
1. I am creating a home computer lab. I do have 3 servers HP ProLiant DL 385 G1. Two of them have 6 gigabit ports where as the third server has 2 gigabit ports.
2. Installed ESXi 5.1 on two servers where as installed FreeNAS on the third server and configured it as iSCSI storage and NFS storage.
Problem:
1. Every port works perfectly fine. However, when I keep connecting the ports of the switch to the ports of servers, internet gets disconnected.
2. Interestingly, my wireless internet also gets disconnected, the ports of the switch does not have any internet now.
3. This happens till I connect above 8-9 ports of the switch to the servers.
3. However, when I remove the connection between the switch and the servers, internet comes, wireless internet starts working; and the port of the switch also gets internet connection when I check the internet connection of the individual ports one at a time.
Some more information:i do have internet service provided by Time Warner Cable. My internet speed is as follows:
Download Speed: Up to 15 Mbps
Upload Speed: Up to 1 Mbps
I do have a modem *** router by Motorola which has 4 gigabit ports.Model no: Motorola SURFboard SBG6580 i am assuming it is some thing related to bandwidth of the internet.
View 4 Replies
View Related
May 10, 2012
My cisco 3550 EMI switch is not responding to power connection. I have checked and changed power cable. its still not working.fan is not running and no lights on front panel
View 3 Replies
View Related
Aug 8, 2012
I have a Ethernet module (SM-ES3G-16-P) installed in a 3945 router and noticed during first boot no licenses are active at all. I would assume at a mimimum ipbase would be active. With this module, does static routing work with just ipbase?
Example:
interface g0/1
no switchport
ip addr 192.168.254.2 255.255.255.0
[code]....
View 3 Replies
View Related
Mar 19, 2012
we using Linksys router for Internet for different vlans now we take 3750 as core switch for another different vlans 10,20 we create v Lans 20,20 also create cpd servers and we need Internet for vlans 10,20 through linksys router how should we configure?
View 5 Replies
View Related
Jun 19, 2012
I'm trying to get an IP_ADDR set on the management port in SWITCH: mode but for some reason the port seems disabled. PC shows connection unplugged. MGMT_INIT is not a valid command (not listed under '?' ). Bootloader version is 12.2(53R)SE2 FC1.
View 4 Replies
View Related
Jan 25, 2012
i'm already has one internet connection is conecting directily to the Core Switch 6509, and the Switch is route any internet request with default route:
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.170.10.10
10.170.10.10 is --> Next hop for the DSL router internal IP, and it's working fine.
We have a new internet connection with another ISP/ with another DSL router, how to connect both of them to exit from the Core Switch 6509.
is it ok if i make another default route to the Next hop to the new DSL router as:
SW6509-conf)# ip route 0.0.0.0 0.0.0.0 10.80.10.10
10.80.10.10 is --> Next hop for the new DSL router internal IP.
View 6 Replies
View Related
Mar 12, 2012
Having an issue with two Cat 2940, they have fiber 100Base-TX. Added a new Cat switch (the second on the VLAN), the existing Cat switch drops the fiber connection.
View 6 Replies
View Related
Jan 5, 2013
I have one 3945 router with SM-ES3-16-P module with SL-ES3-16-IPS. I am not seeing any license for this module in CLI output of my router. How do I add license for this module and activate. do I need IP Service IOS for this module
View 1 Replies
View Related
Jan 10, 2012
ws-c2960-24tt-L Ethernet switch adding or removing any device from switch cause a loss of connection to all other devices on switch for about 60sec.
View 1 Replies
View Related
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.
View 5 Replies
View Related
Jan 30, 2012
I'd like to establish a more robust border router/switch redundancy plan and would like to know if this seems like it would be reliable.I'm looking at using a couple of 3945 routers and 3750 switches in the configuration shown below.
The article found at [URL] outlines the config between a single switch and router but I am looking at doing this with dual routers and switches.
View 3 Replies
View Related
May 8, 2012
I have an environment of 3 X 3560G of which I have 1st switch-CORE(f0/10) connecting to the VPN router(CE) interface-f0/0. Remaining 2 Cisco 3560's(Access) are connected to Gi0/1 and Gi0/2 on the 1st switch-CORE via gi0/1 . On all three switches I have created multiple VLANs and assigned ports to these VLAN. The switch to switch connection is trunk allowing all VLANs created on all these 3 switches. Now the issue is how I am going to have all these VLANs routed through single interface on the routeri-e f0/0, as all these subnets will communicating to remote site over VPN. What should be default gateway on the 2 Access switches and the CORE switch, also what static route should be on router to reach all subnets(VLANs) created on these 3 switches.
I have read inter-VLAN routing i-e creating sub interfaces on router but dont want to proceed with that and looking for any other way to have my VLANs talk on all three switches and then are accessible to remote site ove VPN?
View 9 Replies
View Related
Nov 19, 2012
If I update my firmware on my EA2700 router to be able to use the Cloud, will I loose the ability to connect to my router on 192.168.1.1 ? If this is so, why couldn't linksys let you use both Cloud and 192.168.1.1 in their latest firmware?
View 3 Replies
View Related
Jan 24, 2012
Not too much networking savvy - but here goes. Want to use router as local lan - no wireless. When router is connected to laptop via RJ45 I loose my ability to connect to sites via browser. IPconfig shows wireless adapter at 192.168.1.3. When router is attached it's ip is 192.168.1.1. Disabled the wireless in the settings but no dice. When the router was used with DSL it was set at PPPoE but now that I'm just using it locally not sure whether it should be DHCP or Static or other.
View 3 Replies
View Related
