Cisco WAN :: EIGRP 101 - Prefer External Routes Versus Internal Routes?

Apr 8, 2011

Is there a way in EIGRP to prefer external routes versus internal routes. EIGRP always picks up internal routes as long as they are available, no matter if external routes have better metric. Our Scenario is that we have DMVPN hub and spoke topology running EIGRP 101. The Core routers also on EIGRP 101 prefer EIGRP 101 routes. We have the new MPLS network running BGP and redistributing these BGP routes into EIGRP 101. The core routers prefer EIGRP 101 routes (internal) to redistributed BGP (external) routes.

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Cisco WAN :: 2901 Eigrp Does Not Redistribute Static Routes

Sep 25, 2011

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.

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Cisco WAN :: 3825 Will Not Add Routes To Topology Table From Eigrp Neighbor

Mar 13, 2013

I have a 3825 running c3825-advipservicesk9-mz.124-24.T8. It is configured as an eigrp stub advertising only its connected and static routes. There are three WAN connections using a metro ethernet service. Two are data, one for voice traffic. The primary data connections run to two WAN edge ASR1002 routers.
The primary data connection (Gi0/1.943) is 20 Megs, the secondary data connection (Gi0/1.944) is only 15 Megs. Before the secondary connection was in place I only had routes to our backbone via Gi0/1.943 and everything was working great. Some time after the secondary data connection was turned up the routes to the backbone through Gi0/1.943 disappeared from the eigrp topology table causing all data traffic to flow through the less desirable secondary Gi0/1.944 interface to our backbone.
There is a good eigrp neighbor relationship between the 3825 and the ASR connected to Gi0/1.943, but if I show ip protocols it does not list the ASR as a data source. I know that the ASR is advertising its routes because I can see the updates coming from it if I debug ip eigrp. For some reason they are just not being added to the topology table by the 3825, not even as a feasible successor.
I have shut/no shut the interface multiple times at both ends during troubleshooting and I also reloaded and upgraded the code on the 3825 from 12.4(24)T to 12.4(24)T8. We also contacted the metro ethernet carrier to see if they had a policy that could potentially be blocking the traffic (no). My colleagues and I are just not seeing any feasible reason why these routes are not being added.

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Cisco WAN :: EIGRP Not Fully Passing Routes After Introducing 3750

Apr 8, 2013

We've put in a 3750 at our corp hq (Detroit).  We did this to break up the current flat /16 network into separate VLAN's for various purposes.  We plan on doing that at another site (Farmington), which will become a DR site.  We are running EIGRP throughout the organization over an OPTEMAN netowrk and also sending routes to a managed MPLS network which uses BGP.  BGP redistributes into EIGRP and vice versa.  I've attached a pdf of the network.  The 3750 core at the corp hq is a temp core, hopefully upgrading to Nexus within a year or two.  This problem didn't exist until the 3750 was introduced and became the gateway for the site.  The OPTEMAN router was the gateway and was on the same VLAN as the MPLS router.
So, in detroit we have an Detroit-MPLS router, Detroit-3750, and Detroit-OPTEMAN.  What I'm seeing is that the routers I'm getting from the MPLS router make it to the 3750.  The 3750 advertises those routes to the Detroit-OPTEMAN router.  However, the OPTEMAN router doesn't advertise these routes any further..
In Farmington, it is currently set up like Detroit used to be set up.  There is a flat network and both routers are on the same VLAN, no L3 core switch.  Routes come in from the MPLS, get advertised to the Farmington-OPTEMAN router, distributes the routes out to all OPTEMAN connected routers, including Detroit.  However, Detroit is not passing that route to the 3750.
When we made the 3750 stack the core, we didn't change anything else, except for some IP changes. Why these routes aren't fully redistributing?
Detroit-3750 Stack
WS-C3750G-24TS-S   <-Stack master running c3750-ipservicesk9-mz.122-55.SE7.bin
WS-C3750X-12S-E  <-Running c3750e-universalk9-mz.122-55.SE7
show sdm prefer
The current template is "desktop routing" template.

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Cisco Switching/Routing :: To Issue Eigrp Leaking Routes On Catalyst 6500

Mar 26, 2012

Is it possible to issue eigrp leaking routes on catalyst 6500 running IOS 12.2-33SXI9 on gigabitethernet interfaces? or is there another way to acomplish this?

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Cisco Switching/Routing :: 3560 - Advertise Default Routes From EIGRP Stub?

Feb 13, 2013

I have a 3560 with IP base that is acting as a true EIGRP stub router today.  It advertises local routes to the upstream service provider router and receives a default route.
Now I want to connect a 3900 ISR as a voice gateway.  The 3560 does not seem to be advertising any routes to the 3900.  Ok the EIGRP stub doc says this:
Only specified routes are  propagated from the remote (stub) router. The router responds to queries  for summaries, connected routes, redistributed static routes, external  routes, and internal routes with the message "inaccessible." A router  that is configured as a stub will send a special peer information packet  to all neighboring routers to report its status as a stub router.
# Any neighbor that receives a packet informing it of the stub status will  not query the stub router for any routes, and a router that has a stub  peer will not query that peer. The stub router will depend on the  distribution router to send the proper updates to all peers.
I guess I don't understand why the stub advertises local routes to the upstream ISP router but does not seem to advertise routes to the 3900.  Does the stub identify the ISP router as the distribution router somehow, thus differentiating it from the 3900?  If so, how is this done?
show ip eigrp neighbor detail on the 3900:
EIGRP-IPv4 Neighbors for AS(100)
H   Address                 Interface       Hold Uptime   SRTT   RTO  Q  Seq
(sec)         (ms)       Cnt Num


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Cisco Switching/Routing :: EIGRP (AD90) - Are Redistributed Routes Considered For RIB Entry

Mar 17, 2013

If a router receives EIGRP (AD90) routes, and is configured to redistribute thoes routes into BGP(AD20), why does the RIB show only the incoming EIGRP routes and not the redistributed bgp routes?   Are redistributed routes considered for RIB entry in the router that is doing the redistribution

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Cisco WAN :: AS1234 View Internal IP Routes

Jan 31, 2013

Is there anyway I can see how many routes are internal to an AS?
So, something like "show ip route in AS1234" where AS1234 is the local AS number. All internal routes within AS1234 are being parsed around via iBGP, but AS1234 has a full BGP table from upstream provides so "show ip route" shows all local and global routes. How can I see all the routes within the local AS only?

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Cisco VPN :: Anyconnect Clients Not Following Internal Static Routes On ASA5505

Feb 9, 2012

I have just purchased an ASA 5505 for my remote users to access our internal network.  I have followed all the setup instructions I can find.  I am able to establish a VPN connection using the Anyconnect client and can see some of my internal network. (Basically, only the subnet of the internal interface)  However, I have several subnets inside my LAN which are routed by another switch inside my LAN.  I have built in the correct static routes so that the ASA will send traffic to that intenal routing switch for any subnets not part of it's inside interface subnet.  I can see and ping those subnets from the ASA itself but the AnyConnect clients cannot.

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Cisco Switching/Routing :: 6500 OSPF External Routes Churn

Oct 7, 2012

I am observing some strange behaviour related to the routing table, almost all external routes and some inter-area routes are getting refreshed every 10 seconds.
I am getting more than 1000 entries after running 'sh ip route | i 00:00:0', these external routes are being advertised by a neighbor 6500 which redistributing these static routes.
Platform is 6500 with SUP-720

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Cisco Wireless :: 1142N / Internal Versus External Antenna Coverage

Mar 19, 2013

I have a few 1142N Aironets with internal antennas in place, and I am not thrilled by its coverage. I want to extend my wireless network because of a new building which led me to the following question;Is there is any difference in wireless coverage when using external dipole antenna’s (the small ones, for example the AIR-ANT2524 for a new 2600 Aironet) versus the internal (dipole) antenna’s. I am aware you have more options when using external antenna’s, such as omni, directional, outdoor etc.
For an indoor office or warehouse deployment, where temperature is not a concern, why would I buy for example the 2600E with 4 dipole antenna’s over  the 2600i?I have read most Aironet datasheets and their antenna options, but can’t find a word about the advantages of external dipole antennas. I would expect external antennas would give better coverage.. is this true?

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Cisco :: BGP Routes Not In Routing Table?

Feb 4, 2013

We have a BGP / OSPF configuration as shown in the topology picture. When the connection towards Internet is taken down, we expect the traffic to be forwarded toward WAN 2 (preferred) or WAN 1. The problem is that the BGP learned routes disappears when the Internet connection is taken down. The IP routing table on R2 only shows internal networks and the networks between R2 and WAN 1 and 2. No routes to internet is shown. We run "show ip bgp neighbors <ip-to-wan-1-router> received-routes" it contain internet routes. And when we run "show ip bgp neighbors <ip-to-wan-1-router> routes" it contains no routes at all.

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Cisco WAN :: How Many Routes Support 7206VXR With NPE-G2

Jul 24, 2011

How many routes support 7206VXR with NPE-G2?

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Cisco WAN :: How Many IP Routes Does 3825 Support

Jan 23, 2011

I want to know the number of routes supported by CISCO3825-HSEC/K9(512MB DRAM).

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Cisco VPN :: ASA 5510 Not Advertising Routes

Feb 15, 2011

I have an ASA 5510 that is configured for a remote access VPN
When users login, they are given an address from a locally defined pool ( /24). Users can log in fine.
I have enabled EIGRP on the ASA and I have configured the following to be advertised:
1. (default)
2. /24 (dmz network)
3. /24 (vpn pool)
I have also enabled reverse-route injection.
The problem I am having is that the VPN pool network is not being advertised via EIGRP, but the other networks are.
The other issue I am having is that even though I have created access-lists that allow the inside network ( to ping the DMZ interface ( on the ASA, the ASA is not allowing it. I have also created an ACL that allows the DMZ interface to ping inside, but this fails as well.

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Cisco VPN :: ASA 8.4(3) Dynamic VPN And Static Routes?

May 20, 2012

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?

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Cisco WAN :: Setting Up Routes On ASA 5505?

Dec 12, 2012

I'm trying to set up a Cisco ASA 5505. I'm mainly setting things up through ASDM but I also have console access. Right now while I'm setting it up I have the outside/Vlan2 port attached to my existing network and a laptop connected to the inside/Vlan1 port. More info about that:
interface Vlan1
nameif inside
security-level 100


Before I added that last "" entry, the ASA would not see anything on the internet. Now I can ping any external IP address from the router's console. However, the laptop I have connected to the 'inside' port still cannot reach any IP address outside the network. Every time I try to add a similar route for the 'inside' interface, I get the following error: "You have another route configured for this network any which has same gateway and same metric 1. You cannot add a duplicate route." I know I'm misunderstanding something here. In order to make devices connected to the 'inside' port connect to the internet, I need to set up a new route that will direct these devices to, right?

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Cisco WAN :: ASR 1000 With 4M Routes Support

Jul 5, 2011

For ASR1000 to support 4M routes, RP2 must be used. 
1) RP2 need to have 16GB memory in order to support 4M routes?
2) Need to use ESP20/40 together with RP2?
3) If RP2 + ESP10, supporting route table size down to 1M?
4) 4M routes is shared for both IPv4 an IPv6?
5) SIP card will affect route table size?

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Cisco WAN :: C4507R+E - Maximum Routes Sup 7E?

Mar 10, 2013

I'm using a Catalyst 4500 switch (C4507R+E) with Sup 7E. Cisco Datasheet of this switch says that it can learn maximum 256K IPV4 routes. Currently it just learns 10330 ipv4 routes. However when I show platform hardware ip route summary, it seems that the FIB is just free 100K routes as below output:

Entity        total         used      free      util%                             
Entries       260096    10332      249764    3                                
  UC Ipv4     110592     10331     100261    9                                                                
  unused      147456    147456    0            100      
My question is: Can I make use of all 147456 unused routes? Or these ones have to use for any special purpose?

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D-Link DIR-615 :: IPv6 Static Routes

May 5, 2011

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.

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Cisco :: ASA VPN Clients Creating Static Routes?

Nov 15, 2011

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?

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Cisco :: How To Remove These L Routes In Routing Table

Apr 2, 2013


How can you remove these "L" routes in routing table?

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Cisco Switches :: SG300-10 IPv4 Routes Bug?

May 10, 2013

I bought the SG300-10 Switch a few days ago and updated it to firmware, but i think there's a bug in this firmware. If I go to "IP Configuration" IPv4 Routes" in L3 Mode nothing is displayed. In the log file i see that:
21474773112013-Mar-16 09:51:34Error%HTTP_HTTPS-E-DIAGNOSTICS: ERROR - in <RL_vtLeadTableGet> tag, can not find the table rlInetRoutingDistanceTable in the MIB.       21474775182013-Mar-14 22:39:22Error%HTTP_HTTPS-E-DIAGNOSTICS: ERROR - in <RL_vtLeadTableGet> tag, can not find the table rlInetRoutingDistanceTable in the MIB., aggregated (1)               
Reset of the Switch doesn't work.

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Cisco WAN :: 7301 Hundreds Of Static Routes For IP

Jan 27, 2012

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 0xF5FFFF2C [1/0] via "ip-address".There are hundreds of entries for a single IP there.

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Cisco WAN :: R3 Is Not Rebroadcasting BGP Routes Into RIPv2 As Needed

Jul 24, 2011

I am working on a network that has four nodes/Currently I have RIP running in between R1 and R2, and between R3 and R2. These are shared and R1 can access R3 just fine.R3 is running BGP and communicating with R4.R3 can ping everything in R4's network with no difficulty.Currently R3 is not rebroadcasting the BGP routes into RIPv2 as needed.I have tried clearing my BGP session and am still not able to get the BGP routes from R4 to R1.

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Cisco WAN :: How To Separate BGP Routes Within AS65100 To Other AS65101

Mar 6, 2012

   |                                                          |
    |                         AS65101                          |
Routers A1,A2,B1,B2 are in AS 65100
Routers 1 and 2 are in AS 65101 
Routes from the network2 to network3 should go through RouterA1-Router1
Routes from the network1 to network3 should go through RouterB2-Router2
As for now all routes within AS 65100 to AS 65101 goes through RouterB2/Router2

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Cisco WAN :: 2911 With Partial EBGP Routes

Jun 29, 2011

a customer of us asked if C2911 (to be bought) is ok for partial BGP routes.This is the situation: 2 cisco 2911, each peering with 3 other AS (AS1, AS2, AS3), and maybe, in the future, at a small IXP (AS4, AS5, AS6, AS7).They will accept defaults plus partial routes from upstream AS1, AS2, AS3.When deployed at the IXP they also will accept partial routes from AS4-7.So, is 2911 ok for that configuration?the default route is included in the first row of as-path, isn't it?I have no experience with partial routes, only with full (for our datacenter) and default only (for other customers).

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Cisco WAN :: Filtering Routes In Ospfv3 Ipv6?

Apr 7, 2013

i been filterin LSA type 3 and the table route localy routes en ospf v2 ipv4 whit the commands distribute-list , area filter-list route-maps ACL and prefix-lis ¿but how can i do the same filterin in ipv6 whith OSPFv3?

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Cisco WAN :: WS-C3560G-48TS-E How Many BGP Routes It Can Support

Feb 7, 2012

We are planning to run BGP on our pair of 3560G switch, I would like to know how many bgp routes it can support? it currently running on advance IP service.

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Cisco WAN :: Use IP SLA To Monitor Remote Routes On CAT6500?

May 6, 2012

I need to use IP SLA to monitor remote routes on CAT6500

CAT6500 is running "sup-bootflash:s72033-jk9o3sv-mz.122-18.SXD7b.bin" on SUP720
Feature Navigator said it is
ENT FW W/MPLS/IPV6/SSH/3DES After drill down into feature set I found that this version support for IP SLA such IP SLAs - ICMP Path Echo Operation

BUT, back to console I can not do such (config) ip sla command (not found cmd CAT6500(config)# ip sla 1) What I did wrong or others cmd imply this ip sla process?

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Cisco WAN :: C880 ISR Interfaces And Routes Not Active

May 4, 2011

There is a strange problem with :c880data-universalk9-mz.150-1.M4.bin IOS. I can't ping gateway IP address and "sh ip route" does not show any routes.
interface FastEthernet4
ip address a.b.82.66
duplex auto
speed auto

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Cisco VPN :: C3660 Passing IP Routes To VPN Clients

May 19, 2013

We've got a fairly plain-vanilla VPN configuration on a C3660 router running IOS 12.3(26) so that our employees can initiate VPN sessions to our office using their Windows or Linux workstations.  In a typical windows L2TP VPN configuration, the default route is set to the VPN server, and no other routes are passed to the clients, which means that if the client disables "use default route" setting, even getting to the office network fails. 
I know there's a way to do this, but I haven't found it yet.  What I want to do is pass local routes to the client so that only those routes transit the VPN, and permit the clients to use their own default routes.

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Cisco WAN :: 3750 Cannot See Routes Being Exchanged Between Cat3750_2 And ASA

Sep 11, 2011

I have a question regarding EIGRP.I have an ASA and two 3750 switches connected as follows  ASA---eth----Cat3750_1----eth----Cat3750_2.All of them are configured for eigrp 100. Routes are being exchanged between ASA and Cat3750_1 and between Cat3750_1 and Cat3750_2. But for some reason I cannot see the routes being exchanged between Cat3750_2 and ASA. [code]

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