They should work in the base code level in data mode. You don't use the voice command to configure these. You set the card type and that causes the controllers to appear in the config. You then create the channel group under the controller. This will cause the interface to be created and you configure that like any other serial interface. ... View more

I suspect the device on the other end of your fast ethernet does not do proxy arp. When you put in a static route to a interface it will issue a arp for any packet that passes interface. If it gets no response the packet will be dropped. The only way this will work is if the far end that know about the network tells the router to send tha packet to him This is proxy arp but is disabled many times since it is s bad idea. In general you should not need the default router. I would hope that the DHCP server that is giving you the address on fa 4 would also give you all the other information like default router and dns etc. If you do not get the default route via DHCP you want to change your static default to point to the real gateway and not the interface. The provider must either provide the default via DHCP or tell you so you can hard code it. ... View more

If all addresses have more specific routes on the summary router then the null0 is not really needed and will have no effect. It is used in case part of the network being summarized does not exist. For example say I have 10.10.2.0/24 and 10.10.3.0/24 but I summarize it to 10.10.2.0/23. This will generate a 10.10.2.0/23 null0 route in the summary router but since I have routes to both the /24 these will override the null0 since they are more specific. Now lets say I do the same summary but 10.10.3.0/24 is down and therefore not in the routing table. A packet sent to 10.10.3.x will now use the 10.10.2.0/23 null0 route and the packet will be dropped. This is mostly used to prevent routing loops especially when you have default routes configured. ... View more

Eigrp and tunnels are very stable. This issue of learning the end points via the tunnel can happen with any routing protocol. When this happens they flap constantly not just a few times a day. So first is before the tunnel is built how do the 2 routers know to get to the end points. The key here is that what ever method you use to make say ping work you need to make sure you do not damage that. Most the time this is done via static or connected. If you learn the end points via EIRGP then you must be very careful to filter this network so it is not learned from the neighbor relationship formed over the tunnel. Now if you have a /24 that contains the tunnel end point this whole subnet must not be allowed to pass the tunnel. You cannot cause some traffic for this subnet to be though the tunnel and the rest direct. The best solution is to use the loopbacks as the tunnel end points so you only have a single device to worry about. The main reason to use a tunnel at layer 3 is because the intervening routers do not have routes to the networks on the end points. If you have full readability via eigrp already then you do not need tunnels but I would assume there is some requirement that cannot be met with eigrp or they would not have been created in your network. ... View more

I see, you do not accept the full routing table and therefore must use default route. So I assume your goal is to manipulate the nexthop of the default routes you learn to point to a different ISP? The issue you have is that unlike most protocol bgp only sends routes when they change. With the default route this will never change and is only sent when the neighbor first comes up. So if I have 3 ISP and they all send the route and ip say point them to ISP1 i would end up with Learned from ISP1 0.0.0.0 > isp1 nexthop learned from ISP2 0.0.0.0 > isp1 nexthop learned from isp3 0.0.0.0 > isp1 nexthop Now ISP1 goes down so his default route is removed from the bgp and routing table. Unfortunately the 2 other routes are still in the bgp table pointing to ISP1. Since the nexthop is invalid they will not get placed in the routing table. You will not receive new default routes from ISP2 or ISP3 until they go down so you will not be able to change the bgp entry. Maybe I am still misunderstanding what you are attempting. Another option is to use the static route but use the track option on it. You could cause the route to only be inserted when the ISP that did not give you a default is reachable. ... View more

I can see what the prepend does and that will affect your inbound traffic as you describe. Not real sure what setting the nexthop your provider will receive will accomplish. Assuming they know how to get to a.b.c.d they would send your traffic there. Not too sure the ISP will like this or allow it. If you really intended to set the nexthop inbound I guess the next question is what is a.b.c.d If this was on a route learn from ISP2 but your pointed it to ISP1 nexthop and ISP1 failed this route would stay in the BGP table since isp2 is still up but not be placed in the routing table. The more normal way to do this is to use weight or local preference on a inbound route-map to select which outbound path to take. If you wish to have more than one active at the same time you can set the BGP max paths to the number of routes you wish to install in the routing table. The only thing you need to watch for is if one ISP sends you a summary and the other sends the more specific. You may have to do some filtering. ... View more

I didn't see exactly what you want here but they have a number of scripts that you could use as a basis. They have both backup and scheduled functions just not both in the same script. Be sure to check you have a new enough IOS since they have added many things in the later ones. This is one of my favorite new ios feature. http://forums.cisco.com/eforum/servlet/EEM?page=main ... View more

You most likely want GLC-GE-100FX I think this is the one you use when your port is a gig port. There is another part GLC-FE-100FX but I think that one the SFP port is only running at 100. The 3750G has the GLC-GE-100FX as a supported in most models ... View more

Mostly because you are not checking for only port 80. You are also telling it to match a particular URL. The NBAR is matching all URL If you look back at Giuseppe post and change your policy to match the access list he suggested you can limit http traffic in general. You can even limit different ip sites HTTP traffic but you cannot limit different http traffic to the same site. You key problem is that you want to do session based traffic control. Maybe in the future cisco will add the ability to a router. This is why traffic shaper boxes cost so much because they can do this type of stuff. ... View more