Cisco :: NAT Overload Breaks OSPF Adjacency
Aug 30, 2012I have 3 routers all running OSPF. each of the three routers have 2 networks they are advertising..NAT Overload breaks OSPF Adjacency
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Cisco WAN :: C3560 System MTU OSPF And BGP Adjacency
Feb 7, 2011I have some c3560 with system MTU set 1546 with interface VLAN10 whose MTU size is 1546 and there is no possibility to change it to another value. and we have some cisco 2600 where I can't set MTU bigger as 1500. I have a problem in establishing the OSPF adjacency between cisco 2600 abd 3560 , the command "ip ospf mtu-ignore" is set on both side but it doesn't work - the OSPF packets which are sent by c3560 are simply lager as 1500 bytes and are dropped by cisco2600.
the problem is that sometimes c7200 losses their BGP session, I would say in most cases it happens between NPE400 and NPE-G1/G2 whit error message like "session closed by a peer x.x.x.x" after some seconds BGP session goes again UP , and then after some minutes again DOWN .
it can be MTU problem, as the traffic passes those c35660 with MTU1500. The neighbour status showes that "transport tcp path-mtu-discovery" is enabled an all neighbours but it seems doesn't work. if I disable the path-mtu-discovery on the neighbours - the BGP session between them stays stable.
Cisco WAN :: 881s Running OSPF - Losing Adjacency And Then Getting Back
Sep 19, 2012Our remote 881s are running ospf with the DMVPN headends. Recently, I've been testing a couple 881s using eigrp. I've configured eigrp on the headends so I can test the 881s using eigrp. They seem to be fairly stable and are getting all the redistributed routes from ospf but, I've noticed when I show the eigrp neighbors the uptime will indicate that it is resetting every so often. Sometimes the routers that are using eigrp have a uptime of 12 hours and some will resett after a couple of hours. So, I started logging. [code] why I could be losing the adjacency and then getting it back right away?
View 10 Replies View RelatedCisco WAN :: AGFR01RTR03 / AGFR02RTR03 - Missing Route In OSPF To OSPF Redistribution?
Sep 22, 2011I have 2 ASBR routers, AGFR01RTR03 and AGFR02RTR03, performing OSPF to OSPF redistribution in both ways for the same ***. They also do summarization for our private addressing scheme. It is all working just fine for that part (neighbors, summarization, redistribution).
AGDC01RTR01 --- AGDC02RTR01 (OSPF 1000 ABRs)
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AGFR01RTR03 --- AGFR02RTR03 (OSPF 1000 / 53 ASBRs)
Let's focus on AGDC01RTR01 with a specific entry here (IP subnet is fake) :
Routing entry for 1.1.1.0/25
Known via "ospf 1000", distance 110, metric 300, type inter area
Last update from 10.2.244.76 on GigabitEthernet5/1, 1d03h ago
Routing Descriptor Blocks:
* 10.2.244.76, from 10.2.1.249, 1d03h ago, via GigabitEthernet5/1
Route metric is 300, traffic share count is 1
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Cisco WAN :: VLAN 160 / 162 - Different OSPF Process ID For Interconnect Between 2 OSPF Domain
Mar 14, 2011Currently the OSPF network consist of 2 segment route via static route.One is AREA 0 and another AREA 10.Both network are seperate entity, only static route to route between 2 networks.But the static route do not provide the dynamically and flexibility, I plan to run routing between 2 networks via VLAN160 and VLAN162.
I still want to manitnace it was 2 different OSPFrouting domain.Can I run OSPF with differrent OSPF porcess ID?
Cisco WAN :: 3750 EIGRP Adjacency Dropping
Mar 3, 2013I have a production L3 3750 stack with 2 WAN connections, which is connected to the companies WAN infrastructure using EIGRP.Recently there have been a number of hello drops from one site, which is causing the EIGRP adjacency to drop and so the whole site goes down from the rest of the WAN. Physical cabling has been replaced towards the ISP router, and the ISP have found no issues on their equipment or circuit.on occassions the utilisation is high on the link, so reasons for the hello packets to be not reach the end point, but other times the links are lowly used.The WAN links are active/standby, so the active is always used, but the EIGRP adjacency is dropped by both links.
View 7 Replies View RelatedCisco WAN :: ASR9000 - OSPFv3 Log Adjacency Changes Output
Mar 22, 2012What is the log output that I should be seeing with "log adjacency changes" configured? Should I only be seeing LOADING to FULL and FULL to DOWN? I do not have "log adjacency changes detail" configured on an ASR9000 but I receive these state change messages that include EXSTART to DOWN and DOWN to DOWN.
RP/0/RSP0/CPU0:Mar 20 09:25:49.141 EDT: ospfv3[1021]: %ROUTING-OSPFv3-5-ADJCHG : Process 6000, Nbr 104.255.45.102 on GigabitEthernet
0/2/0/1 from LOADING to FULL, Loading Done
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Cisco Firewall :: ASA 5512-X 8.6(1)2 NAT Overload
Feb 18, 2013My collegue and I have been trying to figure out why we are unable to get this ASA to NAT Overload correctly. I'm sure it is something stupid, and the config may have gotten a little dirty as we tried to change options and make it work. FYI, we can ssh from the WAN into the device to configure it. It is communicating externally, but it isn't natting.
ASA Version 8.6(1)2
!
hostname ASA5512-X-Remote
enable password ********** encrypted
passwd ********** encrypted
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Cisco Firewall :: PAT / NAT Overload On 5510?
May 19, 2011There is a new office which is going to be on a separate internal subnet (192.168.254.x), and need this to be port address translated to one public address (212.23.51.108). Ive given it a go on the ASA5510, but not sure if Im doing this right.
3 of the internal addresses need port redirection:
192.168.254.10 - public port 33510 - private port 3389
192.168.254.11 - public port 9940 - private port 443
192.168.254.173 - public port 3390 - private port 3389
port 80 and 443 opened for 192.168.254.10
I have a test pc setup and connected to the internal 192.168.254.0 network (gave it static of 192.168.254.10), it is reaching the internet, and its public IP is seen as 212.23.51.108, however how do I test to see if port 80 or 443 is open for this ip?
Tried using the cli but gave up and looked at doing int in ASDM, however cant see the option in ASDM for NAT overload, so ive tried configuring this with Dynamic NAT which looks about right.....
This is the relevant config so far as far as I can see.
global (outside) 2 212.23.51.108
nat (inside) 2 192.168.254.0 255.255.255.0
nat (inside) 2 access-list inside_nat_outbound
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Cisco WAN :: Catalyst 6509-E / Nat Overload Does Not Work
May 18, 2011I have the folowing nat configuration on my catalyst 6509-E with a sup720-10G that does not work, and gives a erros messague:
ip vrf testes
rd 6900:5
interface Vlan1111
description liga
ip vrf forwarding testes
ip address 192.168.63.91 255.255.255.248
ip nat inside
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This configuration generates the folowing error:
NAT: translation failed (A), dropping packet s=128.2.21.21 d=192.168.63.185
If i change the nat overload to a static nat, everything? Is there any wrong with this configuration ?
Cisco WAN :: Broken Pat / Overload After Upgrade From 1711 To 891
Apr 26, 2011Broken Pat/Overload after upgrade from 1711 to 891
View 7 Replies View RelatedCisco WAN :: 2901 - Configure Router Overload NAT (IOS 15)
Jul 5, 2011I am attempting to configure a Cisco 2901 router using IOS 15 to properly perform NAT/PAT translation between LAN and the internet connection. I've configured DHCP pool for the local interface (GigabitEthernet0/1), which works properly. The WAN interface (GigabitEthernet0/0) is configured to obtain its own IP by DHCP from the ISP. I can work on the LAN computers and I can access the internet directly from the router (using, for example, telnet and router's ping commands). The problem is, NAT does not work properly and connection from the LAN interface does not reach the WAN interface.
View 1 Replies View RelatedCisco Firewall :: Attacks That Simply Overload ASA 5505
May 6, 2013We have an ASA 5505 and we keep getting short bursts of ICMP packets (5000 in one second) They will do this and it just simply overloads the ASA and it crashes.Is this since it is 1000 past the 4000 connections per second capacity of the ASA 5505 or do we have a setting wrong some place that could prevent this type of overload from happening? We are looking to prevent DoS and other attacks that prevent even a short loss of connection since the servers are getting attacked daily and we have voice streaming on through the ASA. [code]
View 2 Replies View RelatedCisco VPN :: Setting Up Split Tunneling 2821 With Nat Overload?
May 1, 2013I have a cisco 2821 router. I currently have it setup to accept vpn connections from a cisco client which uses the 172.16.4.0 subjet for vpn connections. I also have nat overload setup for my local lan of the router so my internal servers on the 172.16.3.0 subnet can reach the internet. Every thing works great for that setup.However I have tried several methods I found for split tunneling and they have weird problems with the nat overload in place. If I take away nat overload the split tunneling works. If I take away split tunneling the nat overload works. I can't seem to get them to work at the same time.Config is below. This is the vpn/nat overload config with no split tunnel.
Current configuration : 2236 bytes
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version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
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Cisco :: C892 / Overload Router With Debug Command
Jan 10, 2012I use a C892 router with the IOS c890-universalk9-mz.152-1.T.bin. I just ran the command "debug ip packet 151 detail" and then the router stopped to work because it was overloaded. The ACL151 I used is as follow:
Extended IP access list 151
10 permit ip host 10.1.1.1 host 91.1.1.1
In the syslog then I got hundred of messages from IPSec:
Jan 11 09:43:35.677: IP: s=10.80.10.254, d=10.64.19.99, pak 8A7453CC consumed in output feature , packet consumed, IPSec: to crypto engine(70), rtype 1, forus FALSE, sendself FALSE, mtu 0, fwdchk FALSE
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For me it seems just like that this ACL is not applied and that I have a debug then for the whole traffic.
Cisco Switching/Routing :: Location Of FIB And Adjacency Table In Both 6500 Series And Fixed Ports Switches
Apr 28, 2012I am little confused about the location of FIB table and adjacency table in both cisco 6500 series and fixed ports switches .In case of 6500 series switches
"Central CEF mode:The CEF FIB and adjacency tables reside on the route processor,and the route processor performs the express forwarding. Use this CEF mode when line cards are not available for CEF switching, or when features are not compatible with distributed CEF."
If line cards do no support CEF, then FIB and adjacency tables are built and are located on route processor( control plane ). Data plane operations are implemented in software and route processor performs those operations.
Some Cisco switches actually use different hardware to control the different planes. For example, the Cisco Catalyst 6500 is a modular switch that uses the Multilayer Switch.Feature Card (MSFC) for control-plane operations, and the supervisor Policy Feature Card (PFC) for the data-plane operations.
Supervisor module has has MSFC and PFC. MSFC implements control plane operation where as PFC implements data plane operation.But the first paragraph says in Central cef mode, both data plane and control plane operations are implemented by route processor. [code]
Do these switches implement the Central mode cef in same way as mentioned above. i.e
"Central CEF mode:The CEF FIB and adjacency tables reside on the route processor and the route processor performs the express forwarding. Use this CEF mode whenline cards are not available for CEF switching, or when features are not compatible with distributed CEF."Or fixed ports switches such as 3750 implement data plane operation in hardware where FIB tabe and adjacency table are maintained on Data plane.
Can OSPF V2 And OSPF V3 Run In The Same Time
May 15, 2011I am running IPv4 with OSPFv2 currently. However, I planed to deploy IPv6 in my network. Is it possible to deploy V6 with OSPFv3 without affecting current network traffic in V4?
View 7 Replies View RelatedWireless :: Internet Breaks When Using LAN?
Dec 26, 2012My internet is typically just fine but when I try to use LAN it cuts in and out every few minutes, which as you can imagine ruins everything. Currently using wi-fi as my Ethernet port somehow has ceased working. No other computer wired or wireless in my house has this problem.
View 2 Replies View RelatedCisco 3845 Gi 0/0 - Breaks In MRTG Graph
Jul 31, 2012I am getting drops in MRTG graph. Pgm nhiPoller[Net]: Received large delta from 'hyd-rt3845-01-GigabitEthernet0/1'. Poll is dropped (OID in error is ifInOctets. Delta is 3989641522. Old value is 4239690170. Current value is 3934364396.).
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What could be the reason for the polling drops and is it IOS bug.
Cisco VPN :: ASA 5505 - Changing Outside Interface IP Breaks Remote VPN
Aug 17, 2011I have an ASA 5505 running 8.2
I used the ASDM wizard (6.3) to set up a remote VPN. After slightly adjusting the wizards configuration the VPN is working well.
Now I need to change the Outside interfaces IP address. When I do that the VPN no longer works. If I change it back to the original value the VPN works again.
What configuration changes do I have to make regaurding the remote VPN after changing the outside interfaces IP address?
Cisco Routers :: RV082 Firmware Upgrade Breaks WAN
Dec 1, 2009I have upgrade the firmware on several RV082 (and RV042) model routers, and all of them have had subsequent WAN connectivity loss. The WAN works for a while, then stops working until the router is restarted, then fails shortly thereafter. I would assume it was some configuration corruption on incompatibility with the upgrade, but the symptom has been universal. EVERY 2.x upgrade I've made to a RV082 or RV042 router has exhibited this symptom. Reverting to the 1.3.98-tm firmware fixes the issue.
View 14 Replies View RelatedCisco Infrastructure :: Java 7 Update On OSX Breaks ASDM
Oct 16, 2012So (foolishly) I let the software updater delete Java 6 (which only Apple provides), and I installed Java 7 from java.com. Was running ASDM 6.4.9, all I got was the Java 7 splash box. Updated ASDM to 6.4.9-103, same problem.
I can run ASDM in one of my VM's, but it's a pain.
Cisco VPN :: 837 - EasyVPN Breaks Remote Access Session
Aug 11, 2011I using cisco 837 for incoming remote access VPN connections with are working very well but I recently created one outgoing easy vpn connection and I have issue since that time. As soon as easy VPN is up and established successfully I lost remote VPN access to internal subnet.
Where is :
Internal subnet: 192.168.172.0/24
remote VPN pool 192.168.24.2-6
Take a look at config attached and point me at missconfiguration
Setting Up A Static IP For PC Breaks Internet Browser
Mar 9, 2013I'm trying to portforward for a game, and in order to do so, I'm setting up a static IP. I've portforwarded in the past and all's been fine, but when I'm trying to set a static IP now it allows me to portforward and host the game, but whenever I try to log into any sort of website, it cannot find the page. The only fix to this is to allow it to obtain the IP address automatically. I've had a static IP in the past and yet I've never run into this issue before.
When I go to my TCP/IPV4 settings under the properties of my selected internet connection, I open up my ipconfig(I'll post it below) and select "Use the Following Ip Address". I then input 192.168.1.73, to change it to that.
Then, I click on the subnet mask box and it auto-fills 255.255.255.0, which is listed under ipconfig anyways, and for default gateway I input 192.168.1.1. I leave the DNS server boxes blank because it doesn't list them under ipconfig and it's what I did in the past to achieve the same results. After I click OK, the issue I listed above begins.
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Windows IP Configuration
Host Name . . . . . . . . . . . . : Tim-PC
Primary Dns Suffix . . . . . . . :
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Adapter Breaks During Data Transfer Across Network
Feb 28, 2011Windows 7 32 bit laptop ----> Windows 7 64 bit PC with USB network adapter.
I'm trying to move a folder from one computer to the other. There are about 300 files totalling 3mb.
At around "234 files remaining", the transfer freezes, and after a minute or so, the network connection on the destination computer is shown as Disabled. If I right click and choose "Enable", it makes the attempt, says "connection failed", and then "It is not possible to connect at this time. No network was detected. You may need to plug in your network cable to complete the connection."
What will fix it is unplugging the USB network adapter and replugging. But it only allows a little bit more transfer before it happens again.
I tried initiating the transfer from one computer, and again from the destination (bringing the files to it), but the problem occurs just the same. On additional attempts it will reconnect to the other computer and allow me to browse the files, but the connection crashes again without any more progress. My internet connection is fine otherwise, doesn't do this unless I'm transferring data across the network. I disabled Eset real-time protection but have windows firewall up (I'd rather not turn it off).
WRT54G V1 - Internet Connection Breaks Every 3 Seconds
Feb 12, 2011I have 3 computers at my home, a WRT54G V1 router.
2 of the computers are connected wired to the router, the internet on them works fine. My other computer I have connected via wireless, and when I try to go on the internet every 3 seconds it is saying not available. Now one thing I noticed was that when I connected to the wireless network it renamed it to my computers service tag. I confirmed this via a friends laptop. From "Busted" to "DCLZMRH1_Network", defenetly not something I did.
When this wireless computer is connected, ALL computers on the network begin having the same problem where each 3 seconds everybody is disconnected randomly. However as soon as I turn the wireless computer off, everything goes back to normal on the wired computers.
I have successfuly replicated this issue using 2 different wireless adapters, one USB, and one "wired" the one you put on the inside (lol) I have Brighthouse Networks cable internet
Tech Support Guy System Info Utility version 1.0.0.1
OS Version: Microsoft� Windows Vista™ Home Premium , Service Pack 2, 32 bit
Processor: Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, x64 Family 6 Model 15
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Cisco Routers :: IPv6 Breaks WRVS4400N And RVS400 VPN Connectivity
Oct 11, 2011I just spent a number of hours getting a site-to-site VPN tunnel and Cisco Quick Connect client running on my WRVS4400N and RVS400. Turns out the problem was the routers don't route IPv6 properly and it takes precedence over IPv4
View 1 Replies View RelatedCisco Routers :: RV120W Rebooting Itself When WAN (ADSL Modem) Breaks Away
Aug 16, 2011I have a RV120W that reboots itself when the WAN (ADSL modem) breaks away. With an old D-Link low end router, reconnecting after a failure is completed after 5 seconds and nobody cares, but the RV rebooting takes almost 2 minutes which is actually noticed...I also have some trouble getting VPN running, QuickVPN as well as normal IPsec, using either Shrewsoft or Greenbow as clients. get this router running with 3rd party VPN clients?
View 1 Replies View RelatedCisco WAN :: 4948 - BGP Breaks When Device Connects To Default VLAN
Dec 26, 2011Currently, I have a Cisco 4948 in office that connects to a remote site via BGP. From what I am seeing, when connecting a new device to this switchport (we connect devices to this switch for a multicast VLAN that is set up), the BGP link fails after roughly 20-30 seconds. The switchport is not tagged with a VLAN, or any other config. Just a plain old port. This outage continues until the port is added to the mutlicast VLAN.
View 1 Replies View RelatedCisco :: ACS 5.2 Time Syncing Breaks (Windows Server 2008 R2)
Feb 21, 2013ACS5.2 time sync breaking once in near around one month and not able to authenticate after that .I am using domain controller (Windows Server 2008 R2) as NTP server for ACS .
What is the reason for it , is there any bug in 5.2 release or do i need to configure a thired device and point as NTP for ACS and domain controller.
Cisco Switching/Routing :: C3750G-12s Unable To Boot When Stack Breaks
Jan 27, 2013I do have C3750G-12s switch which is not able to boot as of the expected. Every time when I break the stack and try to use console i got a weird output from my console output. we need the stack to be break and use those switch separtally .
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Cisco Switching/Routing :: 2960S - Higher TTL Response And Ping Breaks
Apr 10, 2012We have Four 2960S Switches in Stack. We have created Multiple VLANs. While Pinging from Member PC to Member VLAN IP on Switch, we are getting Higher TTL response & Some ping breaks for One Particular VLAN. While pinging from Member PC to Member PC, we are getting Normal Ping Response.
View 5 Replies View RelatedRealtek Rtl8190 Wifi Connection Breaks Sometimes When A Session Is Started
Jun 17, 2012I have had intermittent problems with this PCI 802.11n adapter since I installed it. There isn't a new driver available, so that's not a solution. Issue is despite a strong signal, WiFi connection breaks sometimes when a session (either e-mail or browser) is started.The bar signal indicator goes from 5 bars to none, and mouse-over shows "no connection." About half the time the PC locks up (frozen cursor, no response to ctrl-alt-del, etc.).some of the time, the PC recovers after several minutes or more, other times locks up completely and the PC must be either forced reset or powered down manually. I've run CC Cleaner and check out the registry but can't find anything that works. PC is a 2.4GHz Celeron 1GB RAM running WinXP SP3 with all updates.Not related to browser; behavior is the same with Firefox, Chrome, IE. Also, other PCs on same network have no issues.On occasion I've triggered the lock-up while I had performance monitor running, and in the cases where the machine resumed running by itself, history showed no overloads typical of lock-ups. This PC is used almost exclusively for basic e-mail and browsing.
View 1 Replies View Related