Cisco Switching/Routing :: 877W - Multiple Static Routes / Same Destination Dialer0 And Vlan1?
Jun 10, 2013
Is there any way to have my Cisco 877W Router alter from using one static route to another static route when another router on the network is reporting destination host unreachable?
Router 1 (192.168.2.253)
Dialer0 -> ppoe to internet
Vlan1 -> local 192.168.2.0/24
Router 2 (192.168.2.254)
Dialer0 -> ppoe to managed VPN (172.16.28.1)
Vlan1 -> local 192.168.2.0/24
Router 2 is connected to another network through a managed VPN and that network also has internet access. I want to be able to have two routes to the internet on Router 2. And when Router 1 internet goes down packets get routed through the VPN instead.
I currently have on Router 2
ip route 0.0.0.0 0.0.0.0 192.168.2.253
ip route 10.0.0.0 255.255.255.0 Dialer0
ip route 0.0.0.0 0.0.0.0 172.16.28.5 250
Which does nothing when Router 1 has its Dialer0 interface shutdown, or goes offline completely.I suspect I could reverse the setup and have everything routed through the VPN by default and then if / when Dialer0 interface goes down it would switch to using Router 2, but if the problem is in the remote network and interface Dialer0 stays up, it would probably do the same thing... nothing.All devices mentioned are Cisco 877W routers with ADSL and a bunch of fast ethernet interfaces.
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.
I have a Routing issue with one of my SG300-28P units. It has several Trunked VLANs. I think I habe Narrowed it down to a Default Route on the offending SG300 though I cannot see to change or delete any of the Static Routes on the unit. I can Add Routes with no issues, but once Added I cannot Edit or delete them.
We have a 6509 series of core switches and 3750 series of L2 switches, There is no default gateway or any static routes to any IP.VLAN 1 is made admin down and another vlan is used for all communication here in this environment
Attached is configuration for reference But still I am able to take telnet or SSH. I want to know how telnet or SSH or tacacs authentication happens without any static or default route.
i would like to monitor traffic between multiple source ports to multiple destination ports on a nexus 7k. i lknow when you set up monitor session is between source and destination (laptop or traffic analyser) but is there a way i can set up between source and multiple destination ports and capture that traffic ?
I'm a bit perplexed atm with trying to set up multiple failover routes on a 2821 router. Let me say that I have more experieince in a switched network as routing is seldom required where I work atm. Here's my problem. I have a routing table set up as follows but only the primary routes work. The failover routes will not kick in once the primary route is not there.
ip route 10.32.11.0 255.255.255.0 128.32.8.11 ip route 10.32.11.0 255.255.255.0 128.32.24.11 100 ip route 10.32.12.0 255.255.255.0 128.32.8.12 ip route 10.32.12.0 255.255.255.0 128.32.24.12 100 ip route 10.32.14.0 255.255.255.0 128.32.8.14 ip route 10.32.14.0 255.255.255.0 128.32.24.14 100
Ip addresses are not exact but it gets the point across.
Why the failover routes are not failing over? The failover routes work if I remove the primary route from the config.
I was trying to find if it's possible to add the option for static routes for DHCP clients on Cisco IOS DHCP config mode. I'm looking to add a settings as defined on RFC 3442, like this one, set on ISC DHCPd server:
Global settings:
option rfc3442-classless-static-routes code 121 = array of integer 8; option ms-classless-static-routes code 249 = array of integer 8;
I am trying to configure a Cisco 871 router.I have 3 servers on my network that need static public IPs but also still need to communicate on the local network.
I have given my WAN interface the first IP in the block and set up PAT for the rest of the computers on the network which is working fine. Next I set up static NAT rules for the servers translating 3 of the remaining public IPs to the internal addresses of the servers.
I can access those servers internally using the public IPs but not from outside the network. A tracroute from outside the network gets dropped when it gets to my ISP.
I've never configured more than one static ip for a network before and i know i've just missed a step here. Do I also need to set up static routes? Will that update the next hop's routing table?
I configure multiple static RPs and one of the ACLs denies a source will it move on to the next entry that covers it in another acl? [code] i.e. 1.1.1.1 will be used as the RP for 224 to 238 and 2.2.2.2 will be used as the RP for 239.Will that work correctly, i.e. if a source is trying to register with the router and its for the group 239.1.1.1, will it be denied against the first RP and then permitted against the second RP?
I have 2 connections a single T1 for voip traffic only and a DSL line for data traffic.the dsl was migrated to a 2811 with out any issues now comes the time to move the T1 over.
on the T1 side I am able to ping the WAN router and the LAN router IP address but nothing behind it.
currently this is the only statment on the router: ip route 0.0.0.0 0.0.0.0 Dialer1
as a quick a dirty to remove the above i tried: no ip route 0.0.0.0 0.0.0.0 Dialer1 ip route 66.55.110.0 255.255.255.0 Dialer1
but the DSL side dropped. we have a 66.55.110.152/29
for the T1 i would use the following statement.. we have a 209.98.53.192/27
I've been playing around with the Cisco RV180s for a while now and have come across a problem with the subnet calculation in the static routes and routing table. Essentially, if I configure up a static route for a /16 it's entered in the routing table as a /13. If I add a /24 it's entered in the routing table as a /16. I haven't tested every subnet size and combinations but this looks like a fairly fundamental maths bug.
As a side note, I notice that the 1.0.1.9 release notes state the removal of SSH Server, however, I can not find any reference to it's existance prior to 1.0.1.9, did/does it exist in 1.0.0.30 and if so where? .
Screenshots are below and an extract from the configuration file for reference.
router 1721 with one wic-1adsl ,i have adsl conection with irb static ip. the router connect with mannaged switch through a trunk port. the switch has 2 vlans one for the static IPs and the other for private lan. i need the private lan to be able to go to internet. vlan2 can go to internet because it has the same subnet with provider but vlan 1 canot go internet, so how i can make all vlans go internet(the router has only 1 fastethernet port)
I have a problem where only the 2950's switches go transperant. They drop VLAN1 thus no CDP snmp packets. The users keep working fine but our NMS center keeps calling me at 3am when this happens.
These are access switches that connect to stacked 3750's. Some of the uplinks are using media converters that i have been trying to get removed. But i doubt that it could be the cause of the vlan1 going down.
if i have this config: switch port mode trunk trunk aloved vlan 50
will travel over this trunk untagged packets? For eg the V LAN 1 is by default native V LAN without tag. If i have created a bog ring with catalyst 3560x switches with no spanning tree on V LAN 1 can be the case of this config a loop ??? I am using upper config on interfaces that are connected the switches together in ring.
Other interfaces on switch have this config: int range 0/1-4 switchport mode acc switchport acc vlan1
int range 0/5-24 switchport mode acc switchport acc vlan50
I am using vlan1 just for local switching without connection to internet! I am asking just because i have this king of messages in logs:
%CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch discovered on GigabitEthernet1/0/27 (1), with SW3560x_BR8874 GigabitEthernet1/0/19 (50).
GI 1/0/27 and GI 1/0/19 have this config: switchport mode trunk trunk aloved vlan 50
I have two locations DC and Corp connected to each other via Point to Point Circuit. I have forced the two core switches setup as GLBP pair to be primary and secondary for certain VLAN's including VLAN1.I have a switch in our Corporate office 3750 which is where the point to point circuit terminates. VLAN1 SVI is manually shut on that switch. Also the priority on VLAN1 is increased manually like this, "spanning-tree vlan 1 priority 28672".
Now the issue is that the Primarey Root Bridge in the DC is the root bridge for VLAN 1. But this other switch 3750 in our corporate office also is a root bridge for VLAN1. [code]
I would like to configure an 877w I just bought. It's connecting to a UK ADSL2+ link.I'm a penetration tester and I want to put the Cisco router in front of my existing firewall which has an IPS on it, so that it doesn't get in the way of port scans and vulnerability scans. My ISP has issued me with 14 usable addresses a/240 subnet and basically I want to be able to use the route with just the public IP addresses. I have configured Cisco routers before, but never with this type of configuration. It's always been single public IP address NAT'd through to one or two internal LAN's.
It will be nice if I could assign the wireless and fast ethernet ports to the same VLAN using the public addresses. I don't want to use DHCP I'm quite happy statically assigning IP addresses to the computers wireless and LAN interfaces. I am reasonably certain this is possible because not sure how to do it and a little busy at the moment carrying out penetration tests.
I have Cisco RV180. I can not set static route with destination to all IPs (0.0.0.0/0.0.0.0). It always shows errors. It asked me to input non zero number. I can do this on Cisco RV042 without any problem.
I've created a BVI2 where I bridged dot11 0.2 and vlan2 in order to have wired and wireless clients in the same vlan.Some wired client are not reachable from the lan. Wireless clients have no pbl in reaching each other.Monitoring a MAC address that is supposed to be behind the FA2 I have noticed that it moves to vlan2 when in fact it should be behind the FA2.Of course when "show mac-address-table" says it is behind Fa2 the ping to that MAC address works whereas when the TCAM reports it is behind vlan2 it doesn't. Once the MAC address is behind the vlan2 if I clear the mac-address-table and that mac-address is still put behinf Fa2 then the pings works again, sometime I have to perform twice the clear command before the MAC address goes back to the right location.I'd like to understand why the router moves that MAC address from Fa2 to vlan2 and that's the reason for my question in the subject.I don't have any problems for port Fa0 and Fa1."Show int fa2" doesn't show any problem/errors or the likes.BTW even if I force that MAC address to be statically behind FA2 the ping works fine but then stops and if I do "show mac-add" the static entry for it is still there... so looks like there us something that overrides that static entry. If clear everything and I have the mac-address be behind Fa2 then everything starts to work again. I used Fa3 instead of Fa2 and I get the same results.
Probably this is a trivial question but I have not found any response to it. What I would like is to set my cisco 877W rotuer up in order to act as a DNS server which forwards DNS queries following these simple rules:
1.- If the name is within my local domain *.ib forward them to my local DNS 172.21.238.229 and .230, and
2.- Else forward them to the chosen public domains (i.e. 8.8.8.8 and 8.8.4.4).
NTP server When I setup NTP server to take time from [URL] everything is working fine but as soon as I reset my router during boot I can see that router is first trying to get time before it's even connected to ATM and when it can't get time from NTP server it's removing NTP line from configuration (ntp server uk.pool.ntp.org source Dialer0 ). How I setup to wait with sync and do it once ATM connection is up and established? Or How to get IOS to leave this line and sync with NTP every 10 min)?
I have a Cisco 877W-K9 router, and I for the life of me can not work out how to enable multiple SSIDs on the AP whilst keeping them all to the same VLAN?
I know this may seem silly but basically for our clients we setup WPA-Enterprise for one SSID and WPA-PSK for the other to help ease migration between the two etc, however all I can seem to do at the moment is create multiple VLANs and use ip unnumbered vlan1 to sync them all into one, but this seems really silly.
I am running an ASA with 8.4(3) and am trying to setup a dynamic VPN tunnel. We are having a business reason to establish a VPN tunnel to customers who do not have nailed down IP addresses. Now I found a number of documents that outline the steps involved. It seems the basic steps were to Establish a regular tunnelAdd dynamic crypto mapAssign the dynamic crypto map to the tunnel created under step 1. While this sounds pretty straight forward and simple, while prepping for doing just this I hot a road block while thinking it through. In order for my ASA to put anything into the tunnel it has to have a route to the remote network pointing at my VPN peer at the end of the tunnel. How do I do this in a dynamic tunnel? How do I add a dynamic route so the ASA knows which tunnel to stuff the traffic into? How do I stop the traffic from just being send to the Internet?
At the moment if I try and access data from VLAN 1 to VLAN 4 it gets to the destination ok going through the static route and over the vInterOffice connection but the problem is VLAN 4 returning the traffic. This fails because there is no static route back to VLAN 1. If I create a static route from Office 2 to VLAN 1 then it will route all my data traffic over it as well.
The goal is to make a 877W to work as a wireless client of dlink dir320 and brigde the LAN&WLAN so than the LAN clients of 877W could take DHCP from Dlink 320 directly.
Is the ADSL line interface on Cisco 877W not initialising a known issue? This interface on my router has been in this state for more than one month, with the rest of the router seemingly operational. The interface was connected directly to my ADSL broadband and worked well for two years. But then, about a month ago, the interface went down. I saw the exact moment this happened recorded as a syslog message. The only information was that the interface status had changed to down.
Initially I thought this was a matter of reload the router and all will be well. Did not happen. Then I thought my broadband connection was to blame. However, this option was quickly ruled out. So I went on to exhaust all troubleshooting options, including reflashing the router with the saved image and totally changing the configuration. Still no change. I have had to go back to my old BT home hub for internet access. In terms of speed this actually works a lot better than the Cisco router. But I would still rather have the router connected to my broadband line. What can I do to bring the ADSL interface back to life?
In my live VPN concentrator at work, my 5520 is showing a static route for each VPN client that is connected to my SSL vpn right now. This kind of confused me because wouldn't only one route to the address pools subnet be needed for my vpn users?
We have a Cisco 7301 concentrator, well two of them in HSRP configuration. We have multiple VPN's setup on that router (crypto map based). Recently we noticed the following:
- There is one IP address that has hundreds of static routes for some reason
- VPN for this customer is working, but I'm trying to find out why this is happening.
Here is how it looks like: S 0.0.0.0 0xF5FFFF2C [1/0] via "ip-address".There are hundreds of entries for a single IP there.
Will there be a way sometime in the future to add static IPv6 routes? I have a routed /64 and a routed /48 from a tunnel broker that terminates on my DIR-815, and I want to hang the /48 off of another router that I have attached to my LAN interface(goes to my home lab setup that I use for my job). I could just move the tunnel endpoint to the other router, but I like having IPv6 access for all my other PCs on the LAN segment.
I have an 877W router that I would like to have a 2nd pre-configured backup for. I was thinking of getting another 870 series (probably an 877) router, as the more expensive wireless option is not actually required. Am I right to assume that I could simply copy the contents of my current config.txt file onto the second router?
im lookin to establish a a multiple L2L ips tunnels ( one tunnel for each subnet) from my cisco asa 5510 to the same destination. should the cisco asa capable of this ?
i have a problem in my eigrp configuration that the other branch only see the network that i am advertised in eigrp and can't see the the redistibuted static route inside eigrp .. i dunno why is thatand that's my running.
I have 8 RVs4000's to built a test system with. On each side of the network is 2 servers, both with 2 NIC's. Both are on different /24 networks.
The idea is to simulate a WAN link, with the RVS4000's G1 & G2 running in "Gateway" mode to simulate the WAN. All other RVS4000's will be in Router mode ('R1,R2...etc..') All networks in /24 range. As I understand it, the RVS4000 CANNOT take 2 diverse networks on the LAN side: - ie 192.168.168.1 & 10.1.1.1 on the LAN side. The NIC's on the server only need to communicate to the similar type of addresses on the other side - 192.168.168.1 on server 1 to 192.168.170.2 on server 2, but NOT 192.168.168.1 to 10.1.2.1 on server 2. The G1 & G2 link is so that all communications are routed between this link - as a testing point.
So, my questions are this: 1) Will this work? Is there any easier way of doing this? (Bear in mind this is the only equipment i have to do this). 2) Is the static routing I have thought of work? (see below)
I know using the RVS4000's inbuilt RIP may be easier, but I've never configured RIP routing. As this is a test environment, using static routing would be enough to get it going. No security lock down is required, all I'm trying to enable is for the servers to communicate with each other (NIC1 on both servers e.g 10.1.1.1 on server 1 to 10.1.2.1 on NIC 1server 2, and NI 2 on server 1 192.168.168.1 to NI 2 on server 2 192.168.170.1) The 10.1.x.x networks DO not need to talk to the 192.168.x.x networks. THe G1 & G2 link is just for testing - but all communications must pass through here and be routed to their relevant networks on the other side.
