Protocols / Routing :: How To Make Sure R11 Is Able To Get OSPF Routes Of All Areas
Oct 19, 2012
How can I make sure R11 is able to get the OSPF routes of all the areas. Make sure area-278 does not receive any ospf routes from other areas as well as from ASBR routes from other areas. At the same tim, area-278 should be able send successfully RIP routes that we receive from R2 to backbone area.
How filter inbound routes in Cisco ASA OSPF? Because Cisco ASA has no "distibute-list" command for OSFP process configuration, I try to use "filter-list" command in area definition. So, I try to use next configuration:
On a 4507 v12.2(20)EW, the connected subnets which are declared in the ospf instance are not propagated to the MPLS carrier router.Only the static routes which are redistributed in the ospf instance are propagated to the MPLS carrier router.
I have a computer named server and it ip is 192.168.0.5 and a live ip xxxxxxxx which is a private ip. on this system my oracle middle wear is running.I just want that people may access my application which is running on 'server' through public ip. Is it possible. If it is. then how.=]
I am facing two issues in BGP both the topology and Config files.Because the link between Vail and Telluride runs iBGP, both routers will learn about the networks in AS 300 and AS 400 through native BGP only and both AS's do reach each other. Both routers are also running OSPF with Aspen and BGP routes are redistributed into OSPF domain. Now, Aspen knows about the networks in AS 300 and AS 400. Now suppose the link between Vail and Telluride fails, both AS 300 and AS 400 can't reach each other anymore. The only solution to this is to redistribute OSPF routes to BGP on Vail and Telluride. But when i did this, only routes with "O" learned by Tahoe and Alta. In other words, Tahoe sees only 192.168.1.220, 192.168.1.196 and Alta sees only the same routes. Why the redistribution from OSPF to BGP didn't advertise the O E2 routes?
This actually was discussed before but i still can't get it. It is not an actual issue.It is about "Syncronization". I know that we've said many times to turn on Sync. when we do redistribution from BGP to an IGP to make sure that the routes are installed correctly in the IGP routing table. However, as you notice in the configuration, i didn't enable Sync. on Vail and Telluride for a long time and redistribution still works fine.
I just want to know how many ospf routes a catalyst 3740 support ?The cisco doc or datasheets doesn't answer this clearly. Because there is only a statement "unicast routes"!? Does this means all unicast routes (eigrp, ospf....static)If so, there is a statement for about 10k routes ?
I have a Cisco 2620XM Router, running ver. 12.2 (7r). I have OSPF connected, however the OSPF routes are not populating in the sh ip route display. The neighbor relationship is established. The sh ip ospf database does display the other routers running ospf, however only connected (C) and static (S) routes appear.
We are redistributing routes from BGP to OSPF and we want to filter out some of this routes from the OSPF proccess to be announced to neightbours.We want to announce some networks from ASR#1 to Catalyst. We are redistributing them from BGP to OSPF Area 0. Then, to prevent loops in the topology, these routes have to be filtered out from been redistributed from Area 0 to Area 1 in the Catalyst, so Enterasys appliances don't install those routes through OSPF but to point them out through default route to ASR#2.Is it possible with only one OSPF proccess or we have to separate OSPF in two proccess to redistribute between them?
i need to know that how can i make vlans in Linksys SRW224G4 Layer 2 manageable switch , because i have 100 users network having lots of users using more then 1 ip to connect 4 different servers having different ip class pools, what i need is, i want to use only single ip pool with Class B Address like 172.16.6.0 for all network users which all connect to far end servers through layer 2 Linksys SRW224G4 manageable switch controlling to allow different IP pools ? like 172.16.1.0 / 172.16.55.0 / 172.16.99.0 and 192.168.1.0
We have multiple sites that are linked via MPLS (L3) circuits. We have good size circuits for Internet at two main sites (HQ and QC) and smaller sites come to HQ site to go to internet. We are running ospf (Cisco L3 switches) with service provider (ME3400) at these two main sites and service provider then redistributes routes back into MPLS via BGP and then smaller sites ME3400 learn these routes. i am injecting default routes from HQ and QC, but Telco is only redistributing default from HQ. So large pipe Internet at QC is not being used effeciently. Also if MPLS at HQ fails, then we are told, we need to call Telco and they will make change in their network to now start distributing default from QC.it was my understanding that telco can use BGP communities and advertize one default as prefered and second with higher cost, so that failover can occur automatically. And that they can also set up so that west cost sites use HQ and east cost sites can use QC for going to internet, but they say it is not possible.it the least, can I do something like this at my end for failover for internet, in case MPLS at HQ goes down (soon we will be setting up a point to point VPN tunnel between HQ and QC so that MPLS failure at HQ will trigger advertisement of HQ routes over tunnel via QC into MPLS, so other sites can then come to HQ thru QC over this tunnel. At QC Cisco router (to detect loss of default route from HQ and then start advertizing default from QC)
router ospf 1 default-information originate always route-map From_HQ exit ip access-list standard From_HQ
I have a Compaq mini CQ10-100 Netbook, and I am trying to Make a Wireless internet connection through a D-link router. My ISP is Cox Cable. The Netbook is connected to my wireless network, but will not connect to the internet. It keeps asking me to transfer information, via thumb drive, from a wireless access point, but my router is my wireless connector and it doesn't have a USB port to plug in a thumb drive. How do I get this netbook hooked up to the internet?
Is there a way in EIGRP to prefer external routes versus internal routes. EIGRP always picks up internal routes as long as they are available, no matter if external routes have better metric. Our Scenario is that we have DMVPN hub and spoke topology running EIGRP 101. The Core routers also on EIGRP 101 prefer EIGRP 101 routes. We have the new MPLS network running BGP and redistributing these BGP routes into EIGRP 101. The core routers prefer EIGRP 101 routes (internal) to redistributed BGP (external) routes.
An issue that we have run into is that on some of the machines, black areas appear over the screen at random times.These black areas disappear when the users mouse over and return when the mouse is moved back. The areas are usually small (about 30 pixels wide) and we have had to log the users off and on again.The machines that users are using are Thin Clients (HP and Wyse) and it seems to happen when certain programs are in use (Sage).
I 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).
Let's focus on AGDC01RTR01 with a specific entry here (IP subnet is fake) :
Routing entry for 220.127.116.11/25 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
Currently 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?
I hear a lot these days about ethernet deployment in metropolitan areas as access networks. Does this mean that there would be one big optical ethernet LAN (or MAN if you prefer) with fiber to the home connected by switches? Wouldn't this lead to massive spanning trees in large cities? One bad,configuration in the network would affect the whole network.Will all IP traffic have to travel to the core even if it is destined for an intra-MAN destination? I cannot imagine that a ARP broadcast in a large MAN is feasible.
I have a 1941 router configured for Policy based routing with two ISPs.Two static default routes configured to point the gateways of respoective ISPs with same metric.But the problem is, packets are going throug the one ISP only while doing traceroute.
ISP1-----> <----------------------> LAN1 | Router | ISP-------> <----------------------> LAN 2
Below is my configuration :
Current configuration : 5958 bytes ! ! Last configuration change at 05:18:56 UTC Mon Jun 25 2012 ! version 15.0 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption
We are looking into the possibility of putting in some public wireless access in the public areas of our organization. Its a fairly small building in terms of public access and it needs to span 3 rooms in total. We have a spare BT line into the building - ADSL 2+ - and so will utilize that instead of putting them on our network. We would like to run some router based content filtering on the router - but would use open dns if this isn't possible.I could do to find a good wireless router that will cover the 3 areas . Its not a large budget project as there isn't going to be very highly utilized. We are looking Cisco kit - and have drawn up a few options. Initially we were going to go with the 1140's - but these are access points and as per my understanding aren't going to work with the phone line - as it needs to be a wireless router.
The next area was the Linksys E series (E4200) - they do look really good, and they have the content filtering which we like. What the power and range of the E series is? The only issue we might have is its a fairly old building and so some of the walls are pretty thick - one of which is wooden lined.It has the 3x3 mimo antennas and so guess it would provide some pretty good range/power. If the hardware is cheap enough then we may be able to setup the routers in repeater mode - however I'm not sure if the home devices can work that way? - I think max would be £300 - but that will be decided when I have some better numbers.
We have 2 sites, each with 2 x 4506 switches which will be connected togther using an etherchannel. The switches will provide access ports for client devices and will be configured with HSRP to provide gateway redundancy. SW1 will be HSRP active.2 metro ethernet links will be installed in each site which will connect back to our HQ sites. OSPF will be used over the backbone to provide resiliency and to allow shortest path routing to each HQ and to prevent traffic over the HQ to HQ link.
The 4506 will be trunked togther with an SVI for providing OSFP adjacency.For the traffic flow from SW2 to HQ2, traffic will hit SW1 and then route back to SW2 and then to HQ2. Is this the best way to do this? Should a second link be connected between switches just for routing or should something like GLBP be used?
I am attempting to filter a specific host(s) from my OSPF routiing table on a ASA 5550 (ABR) using LSA prefix lists. However, when I look at the other routers in that area, I notice that ALL LSA type-3's are being removed (10 hosts are now missing from the routing table). I have verified the filter is working on the ABR, but I can't figure why ALL hosts/routes that were coming into the area are now being filtered instead of the specific one that I want to filter out.
Here is the config on the ABR:
prefix-list pdm_pl_000 seq 10 permit 18.104.22.168/32 ! ! router ospf 1 network 10.0.0.0 255.255.255.0 area 0 network 10.150.10.0 255.255.255.0 area 10 network 10.150.252.0 255.255.255.224 area 10
The 22.214.171.124 host is actually coming from Area '3'. Am I doing something that is removing all type-3 LSA's?
We have a BGP / OSPF configuration as shown in the topology picture. When the connection towards Internet is taken down, we expect the traffic to be forwarded toward WAN 2 (preferred) or WAN 1. The problem is that the BGP learned routes disappears when the Internet connection is taken down. The IP routing table on R2 only shows internal networks and the networks between R2 and WAN 1 and 2. No routes to internet is shown. We run "show ip bgp neighbors <ip-to-wan-1-router> received-routes" it contain internet routes. And when we run "show ip bgp neighbors <ip-to-wan-1-router> routes" it contains no routes at all.
I have an environment where i have two nexus 7010 switches, along with 2 nexus 5510's. I need to run OSPF as a layer 3 routing protocol between the vpc peer links. I have 1 link being used as a keep alive link, and 3 other links being used as a VpC link.
1) Is it best to configure a separate Vpc VLAN i.e 1010
2) Is it best to configure a vrf context keep-alive
3) just have the management address as the peer ip's.
I have a pair of N5K's, down stream from them are from Fabric Interconnects and a UCS chassis. Upstream is a stack of 3750's then ASA5510's.
I am trying to backup the config to our TFTP server and I am getting 'no route to host'.. I tried to add a route, and found that N5K uses VRF's for routing?? .. After some looking I see there are two base VRF's 'management' and 'default'.. the management VRF has a default gateway entry and a single interface member (mgmt0).. when I look at the default VRF .. there are no interface members or routing entries.. Ok, I can handle that just add some interfaces and add a default gateway. Then I get lost:
I'm able to access the UCS manager..... so how the heck is that even possible if there's no gateway defined anywhere (or maybe I'm missing something?). My theory was: add all other ports but mgmt0 to the default VRF, and have the default gateway point out of the uplinks (a vPC).. but wasn't sure how that would affect anything and mainly just wanted to know how I was able to access the UCS manager in light of the fact that there is no default gateway anywhere that I could see...
However, the 6509 IOS only provides the option to track an interface. Is this a feature that's available in later IOS versions?
Is there another way to track these routes? The subnets are used for WAN links at a HQ and DR site and we are doing a specific PBR (sending all http/https traffic) using these subnets. If that WAN link goes down, we want to be able to utilize a backup WAN link to support that traffic.
I would like to configure few routings on my Cisco router 871 in order to allow my employees to have access only to specific websites.However, since some websites have dynamic IPs propably the route that I will create will not work.
My question is, can I configure a route or is there any other way to configure this permission based on the hostname/domain? For example, if I want to permit access to this website www.surveymonkey.com (126.96.36.199) instead of configuring:
ip route 188.8.131.52 255.255.255.255 192.168.10.250
is there any way to configure based on the url.. in order to be able to recognise this host correctly??
Im new to cisco routes, Im traing to configure a 1711 routes with a dsl 2wire routes, my problem is that Im able to ping anywhere in the routes, but when Im on my computer I can only ping the interfaces on the router but no the 2wire route that gives me access to the internet.
My computer is getting ip addres 192.168.200.100 when I ping th 192.168.1.76 is fine, but when I try to ping the 192.168.1.254 does not work, Im assuming the cisco has activated a dinamic route from .76 to .254, but it is not working, why?
Here is the router configuration
Router#show runBuilding configuration... Current configuration : 1183 bytes!version 12.3service timestamps debug datetime msecservice timestamps log datetime msecno service password-encryption!hostname Router!boot-start-markerboot-end-marker!!no aaa new-model!resource policy!memory-size iomem 25ip subnet-zero!!no ip dhcp [Code]....
6500 - version (s72033_rp-ENTSERVICESK9_WAN-M), Version 12.2(18)SXF17a.I have two ISP's. I have created two defaults as follow & secondary route does not work. [code] After disabling the interface to ISP1, backup routes does not work. [code]
My main issue was trying to connect virtuelly via GNS3 and my router setup on it. I have three Cisco 2621 XM routers set up. They all came with 2 Fast Ethernet ports. However, only one of them has a Serial port. So, what I'm doing is connecting the routers together with the fast ethernet ports using crossover cables. So, I baselined two routers to start with. Very simple AAA, set up IP HTTP server, IP HTTP Secure Server, etc. Privledge lvl 15 access, etc.
I then set my Router A's inside Fa0/1 port with a 192.168.1.0/24 network. The outside port Fa0/0 is 10.0.0.0/30 network.Router B is set up similar, 192. 168. 2. 0/24 insice Fa0/1, Fa0/0 is 10.0.0.0/30 network outside. So, three networks 192.168.1.0, 192.168.2.0, 10.0.0.0 network. [code] I then repeated the same on Router B, just transposing 2.0 network for interesting traffic, and Peer 10.0.0.2 for the Fa0/0 interface on Router A.When I "test" the tunnel, I get an error message. So, since I'm connected to Router B (which was working, had routing, and had Router A's network 1.0 in it's routing table), the error msg says that I need to add a route into the routing table (192.168.1.0). It was there up until I attempted to put the VPN in place. It's like it stopped the routing.
At face value, it looks like this should be working! But when I debug the ospf process, it looks like hello packets aren't tranversing across to the other side. Is it because I just have the 192.xxx.xxx.xxx networks as "interesting" traffic? Can I have multiple networks marked as "interesting"? I thought that's what the peer statements were doing to allow the tunnel to be established.
I have a scenario which is fairly common - certain servers are accessed from the internet via a Load Balancer, and since seeing true client IP is a requirement, the return traffic path must go back through the load balancer. However, I do not want to route all traffic via the load balancer for obvious performance reasons. Internal traffic should be routed directly by the Layer 3 switch, which has a default route of a Firewall.
My plan is to use a VRF for the load balancer and any applicable servers, which works fine. But now I need to join the VRF's routing table with the switch's GRT (global routing table) so that internal traffic works. What is the best way to do this? For scalability reasons I'd like to avoid static routes and I see many examples using BGP, but in this case it seems overkill since everything is on a single logical switch. Can I use OSPF instead? Or a different method? The Supervisors will be 2Ts, so IOS 15.0 will likely be running.
I will be getting a WAN connection to a few offices and I have a need to control routes recieved and advertised to/from them. The service provider will be placing a CPE device on-site and will support OSPF with my edge router; in this case a Cisco 2821. That 2821 router will ideally be configured with OSPF routing toward my two core switches.
-> C2821 to NOT have the full routing table from the Core switches -> Only needs knowledge of two routes from the Core switches and routes from remote offices. -> Controlled routing advertisements. I do not control the remote offices and would like to ensure they do not accidentally advertise routes into my enviroment that could create a conflict.
I'm assuming the Service Provider will be running BGP on their CPE router, which will mean that the OSPF routes recieved by my Cisco 2821 edge router will be OSPF E2 routes. So if thats the case the 2821 would need to advertise E2 routes.I'm not sure if I should be configuring the 2821 in Area 0...because its meant to be a WAN edge router; but if I configure it in another area...say 200...the Service Provider may configure his CPE router in Area 0...which I'm guessing would pose a problem as the 2821 would be lodged in between two area 0s?
From the reading I've done it sounds like I could use NSSA...but I'm not sure if this is the best design.
Is there a way to set static routes per VLAN?Example VLAN 100 sends all traffic to 192.168.1.1 and VLAN 200 sends all traffic to 10.1.1.1. (2800 Series RTR)I have 5 networks that have their own gateway to the Internet via satellite link. Those networks run over the same infrastructure on separate VLANs. They frequently send traffic to each other, which gets sent over a slow SAT link. I introduced a router to the network and would like to set all my hosts default gateway to the local routers sub-interface then have a static route that send all traffic that is not on one of my 5 networks back to that VLANs respective SAT modem to get routed out over the Internet.