Cisco Switching/Routing :: Filter A Specific Host(s) From OSPF Routing Table On A ASA 5550 (ABR)?
May 22, 2013
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 206.253.180.137/32
!
!
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
[code]....
The 206.253.180.137 host is actually coming from Area '3'. Am I doing something that is removing all type-3 LSA's?
I am trying to filter ARP answer arriving on a C6500 trunk port, for a specific vlan.Filtering conditions are:
- packet arrive from vlan ID x on the trunk (on only for this vlan ID) - source MAC address = xx:xx:xx:xx:xx:xx
Thae aim is that the C6500 with never enter into its CAM table this MAC address.I looked at several methos like service policy or vlan filter, but no solution for the moment.
We have two Cisco 3560E layer 3 switches at the core of our network. The switches are configured as an HSRP pair and the clients on our network point to the HSRP address as their default gateway. So if CORE-A dies, then CORE-B will pick up the address and the default route for the clients will continue to be available.We also need to specify a few static routes on the core switch to allow us to get to specific networks. Is there a way to do this so that the routes failover in the same way that the default gateway does?
I started using RIPv2 on Packet Tracer. I got two subnets to connect with two routers. After I completed that, I decided to add a third router. How to setup the Routing Table for atleast R3 ?
I am using Cisco 2911 & IOS version is 15.1. My problem is that after some days (e.g. 15-20 days), the routing table suddenly stops updating & then I have to enter the default route again to make it up. I am using Track 1 to track default route here. After primary link goes down, the Track is also going down but after coming the primary link up, the track is not coming up. So, I have to add the default route again to make it up.
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?
We 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.
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 an ASA 5510, with Ethernet0 connected to Internet via a T1 line, Ethernet1 connected to LAN1, and Ethernet2 connected to LAN2. LAN1 & LAN2 are independant, but share the Internet connection, via the T1 line. On LAN2, I have another router that connects to the Internet, via a Comcast line. I wish to route some of the traffic on LAN2 (10.38.77.0) to the other Router, on LAN2 (10.38.77.12) (connected to the Comcast line). I have entered the following lines:
In datasheet of WS-SUP720-3B - link- was said that are only supported around 256K routes (fib?rib?).With this value I can't get 2 full bgp - that is around 850K ..
The supervisor is that control this or just memory ? I said this because I have a 7204-npe-g1 whith 2 fullrouting and 1G of and he are ok..
! no ip dhcp use vrf connected ip dhcp excluded-address 192.168.1.1 192.168.1.63 ip dhcp excluded-address 192.168.1.192 192.168.1.254 !
[code]....
I want to assign a specific IP to a specifig host by MAC .. for example i want the ip 192.168.1.10 to be assign to the host "client1" by mac.I've been creating a new dhcp pool static:
! ip dhcp pool static host 192.168.1.10 255.255.255.0 hardware-address xxxx.xxxx.xxxx client-name client1 !
Does 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?
I created a lab and I have a few issues. One with a layer 3 switch and another with a ASA 5550.
1. Layer 3 switch: I have created multiple Vlans and I am able to route between them. I can ping the switch IP but not the default gateway to the ASA. I did a tracert of the default gateway of the ASA and once I am past the Vlan gateway it fails.
2. On the ASA 5550 I created the Vlans on sub-interfaces but still cannot get to the internet. ASA config is below the switch config.
We are setting up a test lab in our DMZ. The path to the internet is basically like this. Anything past the firewall is irrelevant. For this lab lets assume it is vlan 300.
LAB SW ---> DMZ-SW ---> ASA FW ---> INTERNET LAB IP Range = 172.16.300.0 /24 GW = 172.16.300.1 (On FW int) Trunked all the way through.
I have an int vlan set up on the LAB SW. It is being trunked to DMZ SW. DMZ trunks it to ASA FW where there is a failover with a redundant switch.On the ASA the interface 0/2 is a subinterface 0/2.300 being used as the default gateway.
I have DHCP running in a specific range on the LAB SW and do get an ip address when plugged in. I cannot ping the default gateway on the ASA FW.The GW is defined using default-router command for 172.16.300.1 i.e. default-router 172.16.300.1?
We are running ospf on the firewall. There appears to be a pattern with ospf and a similar subnet setup elsewhere. I was wondering based off of this info would configuring ospf for 172.16.300.0/24 allow me to ping the GW from a client on the LAB SW.Secondly. I trunked 300 on the DMZ SW but I didnt add the vlan to the configuration. i.e. conf t <enter> vlan 300 <enter> Does this really matter? Or is having the vlan in the configuration only pertain to access mode on interfaces?
On the 6509, with normal 67xx cards installed, where is all the mac table held, is it held on the card itself or on the supervisor? And if I use dcef cards, I gather the MSFC copies the mac table to the DFC ?
If i look at the Feature Navigator , it says that IP Base Supports OSPF and EIGRP. But if i look at the Cisco Link it contradicts the Cisco Feature Navigator.
[URL]
if I have 6509-E with VSS-SUP720-10G and want to run OSPF and BGP on the Switch. What is the IOS i require? WIll IP Base Suffice or i need to take Advance or Enterprise Image.
I am in a doubt if the 3560-12-PC-S supports OSPF. Datasheet says we need IP Services image. But 3560-12PC doesn’t have the option with IP Services. Then I havigate to [URL] how?
So, any clues whether or not this box can run OSPF?
We have an existing network with a core 6500 as a VSS connecting 4 buildings with 4500 chassis under which number of L2 switches are connected. Currunlty we are using RSTP in ring for redundancy but we want to use OSPF in LAN for faster conversion.All the VLAN's are created on 6500.
I am beginning to implement OSPF into the network I work on. I have a network which consists of multiple 4500, 6500 series routers and 3560s. Each switch has its own set of VLANs. In other words VLAN X on one switch is not the same as VLAN X on another switch. I had envisioned connecting each switch via trunk links and then routing via the loopback addresses on each device. That didn't work. Then I created a VLAN 100 on each switch. Each one was configured with an IP in the same subnet range (10.3.0.1 and 10.3.0.2). I added these addresses to the OSPF process in area 0. It worked. However, this is not desired. I have not seen many examples of 4500 layer 3 switches configured with OSPF. The examples I have seen show the interfaces configured with IPs.
I have 2 Nexus 5596UPs with a layer 3 cards that are exhibiting some very peculiar behavior. The systems are running 5.1(3)N1(1).I have configured 2 VRF contexts each running their own OSPF process. There is a static gateway of last resort configured on each VRF, which is to an upstream pair of 5585X's in Active/Active. Each OSPF process has the "default-information originate always" command configured, however, backbone neighbors are not recieving a gateway of last resort from the 5596UPs. The applicable configurations are show below. All other routing information is passing correctly between devices in the network. This network is not production, it is a proof of concept for a larger implementation.
I have a 867VAE-K9. On feature navigator it is listed as supporting OSPF. However when I go into config mode and type "router ?" BGP is there, but OSPF is not. Also, under my tunnel interfaces there is no support for any OSPF commands such as "ip ospf cost" etc. I'm in the process of raising a TAC. I have tried five or six different versions of IOS code that is available for this device, in each, we never see OSPF listed but sometimes see "router odr" or "router lisp"...
I have a problem with ME-3600x running two ospf processes. Proc1 is WAN and PRoc2 is LAN. I am redistributing routes into both directions. After a WAN outage , certain wan routes did not get redistributed into the LAN process. I had to do a clear ip route to fix the problem. Has anynoe seen such a scenario with ME-3600x or any other switch/router
We have a lot of IPX traffic flowing through a switched network and we are being asked to filter it from a network standpoint. At one point they were using IPX in their network, but no longer need to, so they still have a lot of machines spewing out IPX traffic. We have removed the IPX routing commands from our distribution switches, (Cisco 6500), but after running a short 10 minute Wireshark capture I'm still getting a good bit of IPX traffic from a lot of different devices.
My 2821 router has an arp table with the wrong ip to Mac mappings. The impact is that I can reach any host in the 10.1.1.1 subnet. I can reach hosts in the 192.168.35.0 just fine. [code] It is as if the 192.168.35.1 device is answering all arp requests as a proxy arp or something. Clear arp-cache nor clear ip arp on my 2821 have any affect.
we have 6500 cisco switch as a backbone switch in universty. When ı want to look mac addres table , it does no show all mac address.ı mean if ı type ;show mac address-table there are not all mac address.
we have a 3750 and use dhcp services on the switch. every so often we run out of ip's even though we have much less users than the size of the allocated dhcp pool. I've noticed that the dhcp bind table is full but a ping-sweep only shows very few ip's being assinged and used. It looks like the IP addresses are not being released from the table even though I have decreased the lease time to 8 hours.
I have one VLAN on a 3750 where I do not see any MAC addresses even though it is in use. This is an unrouted VLAN between a WLC on a port- channel /LAG and an access port to an ASA for guest traffic. When I do a show MAC add I get nothing for VLAN 60 (guest DMZ) but all other VLANs seem to be OK. Spanning tree is not showing TC counters incrementing either.
I also was told when put a port on this VLAN the laptop did not get a DHCP address form the ASA, but the wireless guest clients are working fine. I can see the DHCP leases and ARP entries in the ASA and the ASA ARP in the WLC so some traffic is passing fine. I'm not onsite right now so troubleshooting is all remote which limits some options.
I have 3750E swiches with IOS v. 12.2(55)SE3. Couple servers connect to ths switch, after ping of IP this servers I can see mac addresses in mac address table.
For instance: sw1#show mac address-table vlan 20 Mac Address Table -------------------------------------------
Vlan Mac Address Type Ports(code) ---- ----------- -------- -----
When ip generate traffic to this server this mac address appear in table again on shot time (less than 10 seconds).
I manage a small/medium sized campus network consisting of 4 Cisco 6500 series chassis (each with SUP720's) and a couple hundred Cisco 3550/3560/2960 edge switches. We recently completed a new leg of fiber that will make a completed loop between all of the 6500's .... before I make the pyhsical connection I need to figure out my OSPF entries on each 6500 switch.
I've been reading the documentation for the new 3750v2 switch, and I'm wondering is the IPBase license supports FULL OSPF. The product sheet notes that it supports OSPF in the IPBase license, but then further down the page it notes that for advanced routing functions (EIGRP,OSPF) you need the IPServices license. Are there any limitations to the OSPF process on a 3750v2 with the IPBase license?
