I'm new to learning about networks and I'm trying to do some research to be able to answer this question for a paper I'm writing. It is the only question in which I have no direction on how to find the answer to and was wondering if someone could point me in a direction? Describe strategies to ensure the availability of network access in switched and routed networks.
View 2 RepliesI'm working on a computer that has no connectivity on wired or wireless connections. the wired eth card is a broadcom netlink card and the wireless adapter is an atheros ar5007eg. I found the drivers for the wireless on acer.com and removed the driver that was on here at first and put the one from acer. i cant find a network in range but device manager says its working fine. Then I found out the wired connection isnt working either and im getting the same messages from windows troubleshooter. It says both are "experiencing driver or hardware related issues and "make sure your internet protocol bindings are correct - ensure that ipv4 and ipv6 are selected in the config for the network adapter". it links me to the connection properties and ipv4 and ipv6 are checked off for both. futhermore, in the connection status window it says i have no ipv4 or ipv6 connectivity.
View 6 Replies View RelatedI have a TENDA wireless USB tiny dongle. How do ensure that I connect only to my router? My router is by far the strogest signal that the TENDA can see but it insists on connecting to some BT open router nearby when I boot up. The BT router signal is showing very low but of course it is open whereas my router requires a passowrd
View 1 Replies View RelatedI have my main branch router (3825) and two remote routers (2821's). They are connected through leased lines that do not touch the internet. For various security reasons I have to ensure that the traffic from the remote's are encrypted in a VPN tunnel even though it is still part of a private network.I have went ahead and created the tunnels and I can verify that they are up. I have applied the cryptomap to the correct interfaces, etc.So the question is - How do I ensure that traffic is not just being router out of the interface from the remote sites back to the branch router with or without using the VPN tunnel? I've taken down the tunnels and of course, the traffic is still being passed back and fourth.
View 1 Replies View RelatedI recently upgraded from a Cisco 3900 series router to a Cisco ASR1k router. Since the upgrade, I have internal clients who claim they cannot connect to external VPNs. These internal clients are behind a NAT that routes a public IP address to a group of clients with private IP addresses.
How can I ensure that all VPN traffic is able to pass through the NAT?
Sonicwall TZ 180 router/firewall LAN and WLAN is configured on different subnets (just the way it is setup) and any devices on either network can not see shares/printers etc on the other network through the same device.from what i can tell, i have all the necessary port forwards/AccessRules setup for WLAN and LAN to communicate together but, it is just not working properly. What the exact settings are to ensure the LAN and WLAN devices communicate to each other.
View 1 Replies View Relatedwhat fields of IT increase internet availability. I have lived in South Korea for the last six months. I can't say how much better life is because there seems to be universal high-speed internet access, even at 24/7 fast food places like Dunkin' Donuts, McDonalds, etc.).
View 3 Replies View RelatedMy father purchase an Inspiron 17R (he knows nothing about computers and I'm just a low level user). He has wireless internet thru Comcast and there was never a problem.He downloaded some scam program, and I reformatted the hard drive. Used the recovery disk, windows installed and remained connected thru the whole reformat process.This recovery disk was the operating system only- no other recovery disk was included.After the reformat, the computer now has no wireless capability. After checking the forums I went to the service center, entered the service tag, and downloaded/installed every driver in the "chipset" and "network" categories. (Downloaded to a different computer and transferred with CD)Still no wireless. When I click on the "bars" in the lower right corner, it doesn't even give me an option for wireless networks (which it used to- now it only says "dial up and VPN")I went to the device manager, the "Wireless LAN mini card" is ok, but there are 4 things underneath showing the yellow exclamation point of death:
ETHERNET CONTROLER
PCI SIMPLE COMMUNICATIONS CENTER
SM BUS CONTROLLER
UNIVERSAL SERIAL BUS
I have two cisco wlc 5508. I wan to install them in two differents site. One WLC in the site A and the another WLC in the site B.
Site B is the WAN of the site A. The site A is the headquarter.
But i need to configure them in High Availability. For example if the Cisco WLC in site A goes down, the ap's have to registered in the WLC of the site B.
Then the traffic LWAPP have to pass over the WAN between site A to site B.
I have to configure two cisco wlc in HA over a WAN . Is ok configure the roamming L3 intercontroller?
I'm polling a few thousand locations using IP SLA, I have responder enabled on all destinations, and I'm using 60 byte voice packets with a QoS policy.When I run an IP SLA Summary availability report, I have a bunch of locations showing 9% availability 8.5% etc. When I go to the actual collector, and pull up a graph of the same time period, that graph shows 100% availability.
Same collector, same data, just different views giving completely different results. I have to assume that the IP SLA summary report is wrong, these sites were not down 90% of the time.
Just a random though to go with that, I do have the IP SLA to only pull information during the locations operational hours, and I did pull the report from midnight to 11am, the statistics should have been gathered for 4 hours of the 11, which is still higher than 9%, and I would expect all of my locations to report like that, not just a few hundred.
All of the devices are similar in hardware and IOS, and I have verified on a handful that IP SLA responder is enabled, and I see the connections, I have also verified the source configuration via command line.
One of my customer wants to upgrade their Cisco ACS version from 4.0 to 5.3. The client has existing ACS version 4.0 windows on VM with two instance and need to upgrade to 5.3 Linux.As per my understanding following version are supporter to upgrade ACS to version 5.3 ACS 4.1.1.24ACS 4.1.4ACS 4.2.0.124ACS 4.2.1 but unfortunatlly there is running 4.0.I suggested to my client the upgradation for ACS and proposed this Upgrade lisence L-CSACS-53VMUP-K9 and CON-SAS-CSACS3V? how I can do the smooth deployment / Migration from 4.0 to 5.3 with (A/P)high availability.
View 1 Replies View RelatedCurrent environment is Cisco 2125 WLC managing ~12 3502E AP's for a single location. Client is looking to provide HA for the single 2125 WLC. With the 2125 now EO-Sale is it possible to go with one additional 2504 WLC and leverage the existing 2125 or would it require going with just (2) 2504's?
View 1 Replies View RelatedI have 2 WLC (5508), i configured the option for enable the high availability, but when the 2 WLC is working the mesh network is unstable, when only wlc is working the mesh is fine.
View 3 Replies View RelatedWe want to make High Availability between two Cisco 3560G switches. Can you tell how we should proceed?Is there any HA module available for Cisco 3560G?
View 1 Replies View Relatedwe plan to implement VSS on our datacenters (C6509/Sup720), in order to remove L2 loops (currently, access layer are C3750 stacks, which could evoluate for N5K/N2K). I would like to have some feedbacks about VSS stability. Some years ago, I have seen some bugs with this technology in another company, so I am still not totally comfortable to use it in the datacenter.
View 0 Replies View Relatedwe have some 2960 in my company and i'm looking to implement LLDP on them.But some are older than the other.tell me from which IOS the lldp is available ?
View 2 Replies View RelatedI am upgrading the Wireless Infrastructure with two 5508 WLC.I am setting up High Availability, but I think is not quite working.
Primary Controller = WLC1
Secondary Controller = WLC2
LAP = LAP1
LAP1 has WLC2 as the primary controller for HA
LAP1 has WLC1 as the secondary controller for HA
While connected to LAP1, I shutdown WLC2. After ~ 20 seconds, LAP1 move to WLC1.I lost connection from LAP1 Don't LAP1 should move with all its clients to WLC1?Am I missing something in my configuration?
I have to install and configure two 2901 routers at different location with high availability. These 2 routers would be connected through WAN, now I would like to configure high availability bwtween two routers.
I have attached a small diagram of the placement of 2 routers.
how do I configure high availability between these 2 links or routers.
with the 5550 we get 4 gig ports on slot 0 and 8 gig ports on slot 1, also a fast Ethernet management interface port. The documentation states that only 8 ports can be active at any one time but does that exclude this management port so that I can use this as well ?
Also is the port assignments for slot 1 like g1/0 - 1/7 ? As the other the 8 ports in slot 1 are 4 x gig E and 4 x gig sfp.
I just want to know if i need to support High Availability in Cisco Secure ACS 5.1 appliance, will the base license suffice or do i need to buy Security Group Access System License/ Large deployment License. Again, do we require license for each appliance or just one is enough?
I Suppose the licensing rules are same for the Vmware version also.
Yesterday I discovered the primary and secondary CAS were both in active state and reporting their fellow peer as dead (I did this using ./fostate.sh), causing authentication errors on the network. I had to stop the perfigo process on the primary one to restore service.
After closer investigation I have discovered that when I put my laptop on the same subnet as their eth2 interfaces (eth0, eth1 and serial are not used for heartbeat only eth2), I can ping the eth2 ip address for the primary device, but can't ping that of the secondary device. See configs and outputs below. I am also wondering why the secondary CAS shows its eth0 and eth1 interfaces as fake0 and fake1.
[root@CAS-SEC ~]# ifconfig eth2
eth2 Link encap:Ethernet HWaddr 00:1F:29:5D:1C:6C
inet addr:172.29.254.10 Bcast:172.29.254.11 Mask:255.255.255.252
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:11205 errors:0 dropped:0 overruns:0 frame:0
[code].....
A customer is currently running a 5520 ASA pair in active/standby HA mode. The devices also have an IPS module, one of them using a temporary (60-day) license. So, right now, licensing is identical on both ASAs and HA is operational.
The question is what exactly will happen after 60 days, once the temporary license expires? Does HA shutdown completely once it's determined that the licensing isn't a 100% match any longer, or does it just cripple one feature (such as the IPS module)?
The customer is balking at purchasing SMARTnet for the 2nd ASA, so I need to explain exactly what is going to happen (if anything) once the license on the 2nd ASA drops off...
One of my remote sites acquires Internet connectivity via a cable modem service. This goes down intermittently, of course. I would like to purchase DSL service from the local telco and configure the edge ASA (currently a 5505) to use the cable modem path normally ... and fall back to the DSL path if necessary.
These seems hard to do. The edge box would need to evaluate the viability of a WAN path using some set of tests ... perhaps pings to a handful of major Internet sites. If all those pings start failing, it would stall for a minute, to give the WAN service provider time to recover ... then cut over to the second path. Cutting to the second path might mean pushing new DNS server addresses to clients (or perhaps the edge box would hand out both sets of DNS servers all the time and rely on the clients to try them all.) Once the cable modem provider restored service, the edge box would stall for a while (ten minutes? an hour?) and then cut back.
I'm willing to replace the edge box with something fancier (a bigger ASA or something sold as a router or whatever), although I'd like to stay under 10K (list) for such a replacement.
I just bought Latitude D630 (2nd hand) but I don't know if my D630 have/haven't bluetooth device. how to check it? and how to enable it?
View 2 Replies View RelatedI will install next week at a customers side a new Pair of 5508 Controller. They have at the moment one old 4404 with about 70 APs.So the bought the new 5508 with HA Pair.For the HA i will need 7.3 i read in the High Availability (AP SSO) Deployment Guide.There are now two 7.3 Versions, or i can choose the new 7.4 Version.
AIR-CT5500-K9-7-3-101-0.aes
AIR-CT5500-K9-7-3-112-0.aes
AIR-CT5500-K9-7-4-100-0.aes
So what software version will be the best at the moment?I will install also a Cisco Prime Infrastructure on a ESX host.For the 7.3 in can use the 1.2 , but for the 7.4 i must take the 1.3.
I am new to Cisco firewalls. We are moving from a different vendor to Cisco ASA 5520s.I have two ASA 5520s running ASA 8.2(5). I am managing them with ASDM 6.4(5).I am trying to setup Active/Standby using the High Availability Wizard. I have interfaces on each device setup with just an IP address and subnet mask. Primary is 10.1.70.1/24 and secondary is 10.1.70.2/24. The interfaces are connected to a switch and these interfaces are the only nodes on this switch. When I run the Wizard on the primary, configure for Active/Standby, enter the peer IP of 10.1.70.2 and I get an error message saying that the peer test failed, followed by an error saying ASDM is temporarily unable to connect to the firewall.
View 5 Replies View RelatedI'd like to get a new WWAN card for my Dell XPS 1340 - currently there is 5530, though now I would like to put 5550 or 5560. I have read couple of threads on dell forums, other forums regarding the drivers availability and compatibility, however I haven't noticed any for 1340. Even though mentioned cards are not officially available for this model?
View 2 Replies View RelatedI would like to know how to implement high availability on a S160 ironport device.i have two S160 device but the user guide is not useful.
View 1 Replies View RelatedIs possible connect and configuring two cisco wlc in high availability to 3 switches in stack 3750 in difference ports?For example
WLC A (Primary) - SWITCH MASTER
WLC B (Secondary) - SWITCH SLAVE
How can i connect the wlc's in HA to get a redundancy in the stack?
I have set up a zone-based policy firewall with HA on two 2911 routers as per the Cisco security configuration guide, for an active/passive LAN-LAN cluster. All works as expected, but there is one problem I find: when the control link between the two devices fails, they go into an active/active state as each member assumes it's the last surviving member. The ARP entries for the Virtual IPs on the neighboring devices point to the device that last claimed the active role (usually the standby device). This works in a way, just sessions don't get synched anymore (control link is the same as data link). Now when the link comes back up, the preemtion works and the active, former standby device goes back to standby. But the ARP entries on the neighboring devices still point to the standby device and nothing goes (also sessions established during the active/active state are lost due to resync with the now active member).
This is a single point of failure and what I need is a way to mitigate that. Under:
redundancy
application redundancy
group 1
control <interface> protocol 1
only one control interface is allowed. Other manufacturers with similar functionality provide for the possibilty of a backup control link, for example the internal LAN interface or a dedicated backup link.
How would I go about that? Maybe use a port-channel for the control/data link (but I'm out of interfaces)?
What consequences could i have if i install a WiSM-2 module into a pair of 6500 configured in VSS and another WiSM-2 module into other pair of 6500 configured in VSS for serving a 300 APs??...in this case, do i need to configure mobility groups for guarantee a high availability and also redundancy of controllers?Under the best practices, is much better having the two WiSM-2 modules into a single pair of 6500 configured in VSS??
View 4 Replies View RelatedCisco 3560 does not support "set ip next-hop verify-availabilty". I need this command in my config. "set ip next-hop" do not do the same job.
View 8 Replies View RelatedWe have two 4400 WLC's. We have around 20 access points in our network.If we assign controller1 as primary for half of the access points and controller 2 as primary for the other half, does this mean the association of the ap's indicate load balancing by the controllers. Does this mean wlc does load balancing as different ap's associate on different controllers. or does it only server as active-standby wlc.
View 2 Replies View Related