RE: Passed the CCIE written by accident-should I retak [7:9733]
First, Congratulations. My openion is the written exists to weed out people with NO experience. It has no other value. I would schedule my practical and get on with it. Good Luck. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=9735t=9733 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Gre tunnel - ip and ipx packet loss -URGENT!!!!!!! [7:8190]
John; IPX is very sensitive to delay variation. That is why you are dropping IPX more than IP. My Novel expert recommends running an NWIP tunnel if you have a novel server on each side. I know. Great. Another tunnel. The large number of differed packets could mean several things. My first WAG would be a broadcast storm. Second would be a routing loop of some type. A packet capture on the link during the problem should tell the tale. My impression is that there is very little to tweak on a GRE. Also, it could be a service provider congestion issue. If that is the case, a SLA (service Level Agreement) would be the only effective cure. If the traffic travels through multiple ISP's the SLA becomes more challenging. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8669t=8190 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: IBGP Lab - Can't get from IBGP to External BGP sit [7:8639]
Sean. There is nothing wrong with your BGP configs. Everything is working just the way you told it to. :) What is wrong is your test methology. Since 192.168.1.0 is unknown in As200, you must do an extended ping on router 1 to router 3 with the loopback address as the source of the ping. HTH Feel free to email me @ [EMAIL PROTECTED] Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8670t=8639 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: null0 [7:8468]
Nul0 has several applications. Security is a good one. Your point that martian routes can appear in the route table rather than exception processes is also a good point. It also is a good way to prevent routing loops on summary addresses, for example. Regards Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8478t=8468 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: bgp [7:8282]
Dwayne; The short answer is no. If static routes sufice for your current IGP, they will work for BGP as well. The key is not to rely on BGP to provide reachability within your AS. (network). I would strongly concider creating loopback addresses if you have multiple paths in your network. this will simplify your bgp config and add stability. HTH Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=8284t=8282 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: URGENT !!!!!!!!!!!!!!!!!!!!! [7:8061]
If you know this, please disregard.
T-1 crossovers, 56k and ethernet crossovers are all different.
I beleive its 12 to 45 for t-1
12 to 78 for DDS{56k}, CDDI, and ATM 25 and 155.
HTH
Doug
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RE: Help with irksome situation = ( [7:7102]
You are missing a default route to the internet. ip route 0.0.0.0 0.0.0.0 206.107.237.x where x is the address of the cable modem. However if the 2521 can't see it, either somthing else is wrong. Are the interfaces Up,Up? A sh ip int bri should tell the tale on the 2501. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7128t=7102 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: no ip classless [7:7100]
If you were running RIP V1 on your network, correct design would dictate that all the local networks must appear in the routing table of your routers. If one of your users accesses a network not in the table, the router would send an icmp network unreachable with no IP classless and an icmp timeout error (after a long wait) with ip classless. This behavior prevents some routing loops, prevents traffic to nonexistant devices and is good design. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7136t=7100 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Help with irksome situation = ( [7:7102]
Peter; Spot on. NAT and a route. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7153t=7102 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: no ip classless [7:7100]
Tom; I think a discussion on this will be interesting. My perseption is that a classful/classless router has nothing to do with VLSM or CIDR. The only issue is how it handles the default route on networks that are attached to the router with at least one interface. Classless - attached net, subnet not in table, forward to DG. Classful - attached net, subnet not in table, drop and generate ICMP to host. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7155t=7100 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Frame Relay Traffic Shaping [7:7137]
Bruce; Your Idea is as good as any. The idea is to drop back to your CIR in times of congestion to avoid dropping frames (and incurring re-transmits) however, with 0 cir, there is no logical point to set it. Set it lower and hope you drop less frames. Personally, on a zero cir net, I would bag the traffic shaping and blast away. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7157t=7137 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: Need a helper to answer four questions [7:6974]
1. What is the two status on PVC mode ? In SVC, which have three status (call setup , transfer and call terminate). I have seen 3 on both ATM and Frame Relay: Active, inactive and deleted. Active were circuits that are up Inactive were VC's that were not configured on that router that are discovered by signaling Deleted are VC's that are reported down by signaling. 2. Frame Relay is a protocol name or protocol type? Hard question to answer. Frame Relay is the name of a Layer 1 and 2 transport protocol for Wide area networks. It was an upgrade from x.25, designed for higher speed lines with lower error rates. 3. In IPX RIP, if one router is down. The other router will send three time keep alive packet to the dead router. If no response, this router will delete from the routing table. How about oin IP RIP? IP and IPX RIP function Similarly. The entire RIP Database is sent every 30 seconds for IP RIP and every 60 seconds for IPX RIP. IN IP RIP, if routing updates from a neighboring router have not arrived within 180 seconds, the routes learned from that router are marked invalid and the holddown timer of 180 seconds is started. if no updates arrive in that 180 seconds, the routes are removed from the routing table. Note, the keepalive is one or more packets that contain the full routing information of the router. 4. What is benefit of partial mesh compare with fully mesh? It will use less routers or use less virtual circuits ? A partial mesh costs less, compared to a full mesh. It will use the same number of routers, but less PVC's. Each pvc costs money and adds complexity. However, if most of the traffic is not destined for the hub, the hub and spoke adds latency and uses bandwidth on both links. Both designs are appropriate, depending on the nature of the traffic. Hope this helps. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7004t=6974 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: RIPv1: why /32 route is distributed [7:7010]
Just a thought. Are you really running rip V1 or are you running Rip V2 in compatibly mode. The first config would look like: Router Rip Net 172.10.0.0 The second would look like: Router rip version 1 net 172.10.0.0 Just a thought. Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7014t=7010 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: reverse telnet [7:6987]
Rich; You are spot on that RS-232 is only spec#8217;ed for 50 ft. However, I have run RS-232 over 1000 ft at 9.6 kbps on wire that was not as good as cat5. My advice is to try it first, at any reasonable length, and only resort to active components if the tests fail. Just my experience. Anthony, the cable Rich is talking about is standard Ethernet patch cables. I use rj-45 couplers to attach the cable to the Cisco octal cable. Any computer store should have both. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=7028t=6987 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: IS-IS queries [7:6638]
Andy L1 and L2 refer to the Dyxtra(sp.) Routing processes Running on the router. In ospf, its one for each area the router is in. In ISIS, its L2 if the router is connected to a router in another area(an ABR), L1 if it is only connected to routers within its area, and L1/2 if it needs to be aware of both inter and intra area routers. The Key to all of this is to realize that an ISIS router is only in one area. In ISIS, routers are in an area, wile networks connect areas. In OSPF, a router is in many areas while lan's are in only one area. Obviously the adjacencies between the L1/L2 and L1 routers should be circuit-type-l1, but should the adjacency between the L1/L2 (pseudo-ABR I suppose) and the L2 (backbone) routers be circuit-type-l1-l2 or l2? The L1 to L1/L2 in the same area are shared on the L1 process. L1/2 to L2 (or L1/2) in are on the L2 process, whether they are in separate areas or the same area. Finally, is it recommended to run full CLNS routing throughout, and if so what are the advantages? The advantages of integrated ISIS (TCP info) are similar to ospf, with the added benefit that any two connected areas do not have to traverse a backbone area, unless it is the best path. the numbering of areas is arbitrary yes! an area is a logical group of routers that share a SPF view. ISIS is link state within an area, and link state BETWEEN areas. Within an area, the link state is designated L1, Between areas L2. Hopefully, I have answered some of your questions without mudding the water. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6663t=6638 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: IS-IS queries [7:6638]
In your example, both RC and RE need to run both L1 and L2 processes. Doyle would refer to them as L1/L2 routers. So your second line would read: L1 L1 L1/L2 L2 L1/L2 L1 L1 Since RD only connects to other routers that run L1/L2 SPF, it can choose to be either L1 only, L2 only or both. RC and RE routers run 2 sets of SPF algorithms, one for L1 and another for L2. I also do not think L1 and L2 refer to Layer 1 and 2 of osi. I am told that this a very Decnet phase 4 view of the world. Think of L1 as within an area. Think of L2 as between areas. (or backbone routers) Think of L1/L2 as the ABR. a router can only be a Layer1 *OR* a Layer2 router (or IS I suppose) for a particular area, right? No. This is not correct. A router can run exactly 2 processes, an L1 and an L2 process. Feel free to drop me a line @ [EMAIL PROTECTED] or my [EMAIL PROTECTED] address, as well as the board. Good Luck Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6715t=6638 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: T-1 module to 56/64K module pinout [7:6368]
The Short answer is it can't be done. You can have a Fractional T-1 with 56K or 64K, but all 24 channels are ALWAYS there, you have just chosen to ignore some. DDS 56K is different and not interoperable. in order to interoperate, you need a channel bank to connect the 56K and T-1 (one channel} together. If you want to follow up, I can ask my WAN Guru at work. HTH Doug Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=6545t=6368 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
