What Is A Routing Prefix
Dec 13, 2011what is a routing prefix? Does it only get used in one of the layers of OSI?
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Cisco :: Where Do Prefix-Lists Fit In
Sep 25, 2012Difference between ACL , Distribution list and route map?
View 5 Replies View RelatedCisco :: Way To Locate Prefix-list?
Jan 30, 2013Is there an easier way to locate what an ACL, prefix-list, etc is applied to?ometimes its a bit tedious especially on some devices with a lot of config. I would like to see what route-maps a prefix-list is applied to[CODE]
View 9 Replies View RelatedRouters / Switches :: BGP Prefix List Is Not Updated?
Nov 22, 2012BGP prefix list is not updated when other party having new downstream with different AS number.BGP filter has disabled but the prefix list is still not updated.BGP soft reset is performed, but the prefix list is still not updated.BGP prefix list is only updated when the other party having new prefix with the same AS number.Can explain why?
View 1 Replies View RelatedCisco :: Difference Between Prefix And Distribute List?
Oct 23, 2011Difference between prefix-list and distribute list?
View 6 Replies View RelatedCisco Firewall :: ASA 5520 - Sub-interfaces With IPv6 Prefix
May 31, 2011We have been testing out IPv6 configurations on a 5520 running 8.2(4). We have assigned EUI-64 prefix addresses to sub-interfaces to allow clients to auto-configure there IPv6 IPs and it works correctly. I used ASDM to do the original configuration and noticed that there were two different ways to do it, both of which seem to work. I can add a prefix under the Interface IPv6 Addresses dialog box and check EUI64 or I can add it under the Interface IPv6 Prefixes. But using the two methods yields two different interface configurations:
1.
interface GigabitEthernet0/1.40
vlan 40
nameif test
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Cisco AAA/Identity/Nac :: ACS 5.2 Multiple Domain Prefix Searching?
May 23, 2011We have an ACS 5.2 server connected to an AD domain controller which has several trusted domains. (domain1, domain2, domain3) We currently have to specify which domain each user belongs to (ie, domain1user) in order to connect. We would like to only have to enter the user name without the prefix, (ie, user1) and have ACS automatically check each domain for a match. Is this possible with ACS 5.2? I seem to remember this was possible with ACS 4.2.
View 2 Replies View RelatedCisco WAN :: Big Prefix Block Separation To Different Public AS 65200
Jan 7, 2013Imagine AS65200 anouncing block 10.10.0.0/22 to the internet.Now for some reason we need to announce block 10.10.2.0/24 from AS65333.How should routes from AS65200 be announced now?
Can I maintain the whole /22 block since 10.10.2.0/24 from AS65333 is more specific? Or should I now break AS65200 announcement into smaller prefixes completelly excluding .2.0/24 ?( .0.0/23 and .3.0/24)
Cisco AAA/Identity/Nac :: ACS 5.3 Stripping Radius User Prefix
Mar 7, 2012I have configure my ACS 5.3 to strip the prefix of the radius username (Domain week wang) it received and I also configured my ACS as the External Radius Server. However, this does not seem to work. The authentication protocol that I am using is PEAP Mschap v2.
I have read inside this forum that due to the fact that the radius username and password is transited inside the TLS tunnel of the PEAP MsChap v2 thus ACS is not able to do the stripping as it is not allow to touch anything inside the TLS tunnel.
Cisco Routers :: RV220W And IPv6 Prefix Delegation
Aug 6, 2012I noticed that the recently released firmware version 1.2.0.9 for the RV110W router mentions in the release notes that DHCPv6 Prefix Delegation is now supported.
Does that mean that this feature will also be implemented in some future firmware release (if we ever see one) for the RV220W router? This is the method used by most if not all ISPs around the world (e.g. Comcast) for IPv6 and the only one RV220W does not currently support. P.S. As of beta version 1.0.4.13 there is no support for IPv6 Prefix Delegation.
Cisco Wireless :: WRVS4400N - Get IPv6 Prefix From WAN Side Of Router?
Oct 9, 2012Since this router already set up for IPv6 and Dual-Stack traffic, would it be possible to give it the ability to get its IPv6 prefix from the WAN side of the router.
Example:
I have Comcast, and as long as my modem and router support IPv6, with the router also supporting DHCPv6-PD to get the /64 prefix from comcast.
I now have an RV180W so this is not an issue for me, but my father is inheriting the WRVS4400N from me and he is also on Comcast.
Cisco WAN :: 1941W / IPv6 - Cannot Enable DHCP Client Prefix Delegation
Feb 3, 2011I am struggling turning on DHCP client prefix delegation on a dial 0 interface on at 1941w.
Everything can be configured apart from prefix delegation features. The following command is just are missing.
int dial 0
ipv6 dhcp client pb
I have configured this on a 877 router with no problems. I have tried 15.0(1)M3 and 15.1(3)T.
Linksys Wireless Router :: EA4500 Prefix Delegation For Establishing An IPv6 Connection
Aug 30, 2012My ISP (OTEnet, Greece) offers IPv6 connectivity in the form of dual-stack IPv4/IPv6 with the requirement that the router supports DHCPv6 Prefix Delegation for establishing an IPv6 connection.Using other routers (Cisco 887W, DrayTek Vigor2130n), I have established an IPv4/IPv6 connection but I am unable to do so with the EA4500. As a matter of fact, when I have the "IPv6 - Automatic" option enabled the router not only cannot obtain an IPv6 prefix from the ISP but it gets stuck in the connection attempt and never obtains an IPv4 or an IPv6 address. I have to disable the IPv6 option in order to simply establish an IPv4-only connection without problems.So, my questions are:
1. Does the latest (2.1.38.38880) firmware support dual-stack IPv6 and DHCPv6 Prefix Delegation?
2. If the router cannot negotiate an IPv6 connection why is it not establishing an IPv4 connection only but gets stuck in the process?
Cisco Routers :: RV220W - DHCPv6 Prefix Delegation - Editing Configuration File?
Jan 25, 2012I am trying to configure this router to obtain an IPv6 address from my ISP who offers a dual stack IPv4/IPv6 DHCPv6 Prefix Delegation service.
I did a WAN packet capture to see the type of DHCPv6 packets the router sends to the ISP in order to obtain an IPv6 address and I saw that the router is sending DHCPv6 solicitation packets of type IA_NA i.e. for Identity Association for Non-temporary Address. However, most ISPs that offer a dual stack IP4/IPv6 service, they use DHCPv6 Prefix Delegation in which case the router is expected to send DHCPv6 solicitation packets of type IA_PD i.e. for Identity Association for Prefix Delegation.
I then downloaded its configuration file and saw the following:
dhcpv6c = {}
dhcpv6c[1] = {}
dhcpv6c[1]["renewTime"] = "3600"
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So, the option for the DHCPv6 client to perform a prefixDelegation request is disabled. Does that mean that if I set this flag to "1" it is going to work? Well, I edited the configuration file and changed this flag but the router refuses to load it! It complains about the file being changed. How does it know that? Is it computing some type of checksum? How can I manually edit this flag and update the router's configuration?
Cisco Switching/Routing :: 800 / Use ASA To Configure All The Vlans And Intervlan Routing And Access Lists?
Jul 4, 2012upgrading our small office network. We currently have about 75 employees with probably 125 devices on the network. I'd like to create about 10 vlans for the different departments and then configure intervlan routing as needed. Currently we have all unmanaged switches and it's just a huge broadcast storm on the network. We are upgrading our Cisco 800 router to an ASA5505 sec. Plus license. I need some recommendations on switches. Of course, this needs to be done as cheap as possible.... Is there a way to use the ASA to configure all the vlans and intervlan routing and access lists and use a cheaper switch to provide the access layer to hosts?
View 4 Replies View RelatedCisco Switching/Routing :: Why Does Routing Work Without Declaring Vlan10 On 2960s-24td-l
Oct 28, 2012I have recently split the voice vlan (10) from the data network (1), and am wondering why my catalysts and router do not require an interface Vlan10 statement. In the past I used OpenBSD boxes to do the routing, and I first needed to configure vlan 10 on the interface before I could get inter-vlan communication to work. With these Cisco devices it works, and I am wondering if it is because of VTP, for the fact that the ports maybe just pass all traffic, or is there some other explanation? Below is the setup, and firmware is up-to-date on all of the devices.
When I plug a phone into the POE SGE, the phone turns on, obtains an address on the proper subnet, and conversations are clear (whereas without the ip nat inside on the new subnet the calls had a lot of static). Possibly the reason that it works is because the phones properly create the tcp/ip packet, and it hops over the trunks and creates the states so that traffic routes back properly. I will install wireshark to see exactly what is going on, but is there a simple explanation that I am overlooking?
Cisco Switching/Routing :: 3560E - HSRP Gateway Failover And Routing Table
Nov 12, 2012We 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?
View 2 Replies View RelatedCisco Switching/Routing :: 3750E / Applying ACLs When Routing Between SVI And Routed Interface?
Mar 12, 2013Quick question here. Using 3750E series switches with multiple VLANS configured. These switches serve as our 'core'. I have SVIs configured for the different VLANs and add inbound ACLs in each of the SVIs to control traffic between VLANS. This switch also terminates a P2P Ethernet link which connects to our Colo facility. The port used for this is configured as an L3 port. I noticed today that I was able to send traffic across this L3 link that I thought should have been blocked by an ACL I had in place but it wasn't. So the traffic flowed from a port in say VLAN 20 across this L3 link (assigned with an IP address). Would this traffic flow not cause traffic to be checked against an ACL applied in the inbound direction on the SVI of VLAN 20 (int vlan 20)? Traffic does get checked when routing between SVIs. Why would it not get checked when routing between SVI and L3 interface?
View 2 Replies View RelatedCisco Switching/Routing :: 3550 / Routing Protocol Neighbor Between SVI And Routed Port?
Apr 18, 2012I have a collapsed core design with routed ports between all components. Access layer switches, data center switches, core/aggregation. All routed (no spanning-tree at all).Now...I have to add an IBM BladeCenter with a BNT layer 3 switch to my topology. However, those nasties don't seem to support routed ports.How can I have a routed port on my cisco switch and a standard access port on the BNT and still establish an adjacency with an SVI? I am running OSPF, but I am labbing this in my home lab with 2 x 3550s and EIGRP.
On SW2:
*Mar 1 00:57:00.711: EIGRP: Received HELLO on Vlan100 nbr 10.1.1.1
*Mar 1 00:57:00.711: AS 999, Flags 0x0, Seq 0/0 interfaceQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/1
*Mar 1 00:57:02.303: EIGRP: Sending UPDATE on Vlan100 nbr 10.1.1.1, retry 9, RTO 5000 tid 0
*Mar 1 00:57:02.303: AS 999, Flags 0x1, Seq 17/0 interfaceQ 0/0 iidbQ un/rely 0/0 peerQ un/rely 0/1
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Cisco Switching/Routing :: How To Migrate From Fixed Router To Vlan Routing On 4507
Feb 16, 2012Any "best practices" or recommendations on how to migrate from a fixed router (3745) to vlan routing on Catalyst 4507 switches in order to minimize the disruption to the network.
View 4 Replies View RelatedCisco Switching/Routing :: Multiple VLAN Routing Tables For 3750 Catalyst
Oct 24, 2012I have a network with a Catalyst 3750 as the main switch and then some Catalyst 2960 switches that are plugged in to that. I have a server running windows server 2008 with a couple of virtual machines running in Hyper-V. I created 4 VLANS listed below and gave the 3750 the following IP Address.I would like the 3750 to only be configurable from VLAN 40 but currently every VLAN can connect to it, I noticed in the standard web page settings there was a setting for "Management VLAN" but it was set to 1 and would not let me change it, I kinda assumed that was for the management port in the back.-Now the tricky part, I was trying to set up routing between the VLANs and so far I have only been able to get a sort of "all or nothing" routing to work. I can turn IP routing on and add two or more VLANs to the routing and it works fine. But what I was hoping to do is create a couple of "junction vlans" that would only route to one or two other vlans. For instance, I wanted to create a VLAN 100 that routed to VLAN 20 and 30 but nothing else. I also want to route VLAN 1 just to VLAN 30, and so on. I am able to do each one of the cases but only one, it seems like the switch only supports one "routing table" am I missing something or is this just a limitation of the switch?
View 2 Replies View RelatedCisco Switching/Routing :: Is 3750 SW Capable Of Handling Full Routing Tables
Oct 8, 2012Is a 3750 sw capable of handling full routing tables and what can you recommend in a small mutihomed BGP router or switch capable of handling full routing tables?
View 2 Replies View RelatedCisco Switching/Routing :: ASA 5510 Routing Specific Traffic To Inside Router
Nov 7, 2012I 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:
route inside2 10.11.0.0 255.255.0.0 10.38.77.12 1
route inside2 10.252.0.0 255.255.0.0 10.38.77.12 1
route inside2 172.22.6.0 255.255.255.0 10.38.77.12 1
I can trace the routes from the ASA 5510 (1st hop is to 10.38.77.12), but not from anything else on LAN2.
Cisco Switching/Routing :: Catalyst 3750 Multi-cast VLAN Routing
Oct 28, 2012I have a network with several catalyst 2960 switches and one catalyst 3750. I have created two VLAN and set up the proper routing and everything is working fine there. I have a client/server application that used multicast in the initial start up for the client to determine available servers, the issue is one of my clients is on a different VLAN then the server. I am able to route the multicast using MVR as long as both the server and the client are plugged into the 3750 by creating a static route, making the server a source port and the client a receive port. Unfortunately I need the client and the server plugged in to different 2960s. My question is how do I establish multicast routing between the two and perferably do it dynamically (always route multicast traffic from one VLAN to another).
View 2 Replies View RelatedCisco Switching/Routing :: 3560 Policy Based Routing Verify-availability
Apr 19, 2012Cisco 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 RelatedCisco Switching/Routing :: Does Catalyst 3550 Support Inter Vlan Routing
Jul 24, 2007Does Catalyst 3550 switch support inter vlan routing ?
View 12 Replies View RelatedCisco Switching/Routing :: 7600 Router Performance / Policy Base Routing?
Mar 6, 2012When mutiple Policy based routing configured on 7600 routers, did the router performace degraded with the number of policy based routing rules?Also, did 7600 running 12.x use per-flow based routing or per packet based routing?
View 1 Replies View RelatedCisco Switching/Routing :: Inter VLAN Routing On N5548P Without L3 Daughter Cards
Jun 1, 2013I have a DC topology based on 2 layers, access and aggregation, based on 2 pairs of N5548Ps, both without L3 Daugher Cards. My intent is to use the aggregation N5K pair as L3 inter VLAN layer, so I configured all the VLAN default GWs there. The 2 layers are interconnected via vPC, in a double-sided vPC topology for some N2Ks and some vSwitches. The point is that, despite connecitivity is working fairly ok, for some applications, like file transfer via either FTP or HTTP, between hosts in different VLANs, the performance is too poor. The file transfer starts ok, but after a while it becomes lower and lower. ICMP is working, but I can see some strange random behaviour, like having some packets taking more that 20 ms (sometimes 40 or more), whilst average is 2 ms.
I read through some articles saying that until you don´t have the L3 license (the one coming with L3 Daughter Cards) you can expect some weird behaviour on L3 level. Is that true?. What can I do apart of purchasing L3 Daughter Cards?. Can I enable L3 Basic license at the moment (I don´t need dynamic routing for now).
Here some excerpts of what I´m saying:
PING results:
10000 packets transmitted, 10000 packets received, 0.00% packet loss
round-trip min/avg/max = 0.809/2.496/57.559 ms
System version: 5.0(3)N2(1)
License and features on the N5Ks:
switch# sho license usage
Feature Ins Lic Status Expiry Date Comments
Count
--------------------------------------------------------------------------------
FCOE_NPV_PKG No - Unused -
FM_SERVER_PKG No - Unused -
ENTERPRISE_PKG No - Unused -
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Cisco Switching/Routing :: 1921 Routing Access From Mixed IP Ranges Between VLANS
Jan 23, 2013I have the following config using a Cisco 1921. I am trying to get devices on the the native VLAN to get internet access via the gateway x.x.x.73.Any thing being routed from the other Vlans 15/20/30 can get access, but nothing from an internal IP address. Is there something I am missing.
The Xs replace the same 3 octets for each interface.I am trying to route from VLANs 15/20/30 to see VLAN 5. I have tried a few things, in terms of adding extra ip routes, but can't get anything to work. Each of those Vlans have another router on the other side of them, which I have also tried adding ip routes too, but nothing. One of the routers (Vlan15 is a Draytek 2830). [code]
Cisco Switching/Routing :: Cat 3560 No Switchport Command Test Out Routing With Switch
Dec 8, 2011The last few days I've been exploring options in getting rid of some old routers accross a wan connections. I have a cat 3560 to play with and I thought I would try and use the no switchport command test out routing with switch. I've got some type of route issue and I tried a few things which I thought would fix the issue but had no effect. I'll post the config and a few commands so you can see what the basic setup is.
Here we can see in the arp that it knows about both 10.7.1.2 (PC unable to ping 10.3.3.254) as well as 10.3.3.254 (ASA).I tried adding in a ip route of 10.7.0.0 255.255.0.0 10.3.3.110 as well as 10.3.3.254. Neither produced the results I wanted allowing 10.7.1.2 (PC) to ping the ASA (10.3.3.254). [code]
Cisco Switching/Routing :: 7609 Routing Interface Attend MSTP Calculation
Mar 7, 2012On a pair of my CISCO7609-s (engine:sup720-3B IOS Version:12.2(33)SRD4),some interfaces is configured as routing interface but also them are attend MSTP caculation and i really caught BPDU packet go out from these ports. [code]
View 1 Replies View RelatedCisco Switching/Routing :: Inter-VLan Routing On Catalyst 3750 Switch
Dec 17, 2011I have been looking into this for a while and I can't seem to figure out why my 2nd vlan is not able to connect properly to the net.
My switch has 12 ports where my devices connects directly, they are all on Vlan 1 and they all work perfectly. on Port 12 I have a dlink router that is connected to a cable modem. the dlink router has an Ip address of 192.168.0.20
I created a second vlan (vlan2) and enabled dhcp relay on it. then I assigned port 9 on the switch to (vlan2)my laptop which is connected to port 9 seems to get an ip address fine and able to ping only some devices on my network (vlan1) and is not able to go out to the internet. I think it has to do with the routes. [code]
Cisco Switching/Routing :: Policy Routing Based On Client Gateway (6509-E)
Feb 26, 2012If client gateway = 192.168.64.9 then next-hop = 192.168.64.8 else use default-route 0.0.0.0
I know it's possible to do a route-map match ip-address ACL list. But is it possible to match on gateway?
Some info about hardware and config:
6509-E in VSS (IOS 12.2(17r)SX5) withVS-S720-10G supervisor.
All routes are static, IP for 192.168.64.9 is on SVI vlan.