Re: I am getting a K-value mismatch & retry limit exceeded

From: Narbik Kocharians (narbikk@gmail.com)
Date: Sun Nov 02 2008 - 21:56:44 ARST

Can you show us the configuration of the interfaces.

On Sun, Nov 2, 2008 at 3:44 PM, Hobbs <deadheadblues@gmail.com> wrote:

> What is the mask of each interface?
>
> On Sun, Nov 2, 2008 at 4:43 PM, Hobbs <deadheadblues@gmail.com> wrote:
>
> > When does it happen? After you change a parameter? I think I have seen
> the
> > issue that Bob talked about with the goodbye message causing a K-value
> > mismatch....It looks like you are getting the K-value mismatch, then your
> > adjacency is forming. This means your adjacency was brought down for some
> > reason - maybe you configured a summary or secondary address...
> >
> > Example: I had an initial config with a mistake (on purpose). One router
> on
> > a LAN with /24 and the other with /20 mask. After I configured the /20
> for a
> > /24, EIGRP sent a goodbye and the other router complained about a K-value
> > mismatch. The adjacency then came up fine.
> >
> > I wonder if its a code issue...I am always running 12.4...
> >
> > On Sun, Nov 2, 2008 at 4:22 PM, Piotr <usaccie@gmail.com> wrote:
> >
> >> On the routers I left the MTU at default,m 1500. On the switches
> >> (3550/3560)
> >> I set the system MTU to 1500 (system MTU 1500 or system MTU routing
> 1500.
> >> Where allowed on the interface I set ip mtu 1500).
> >>
> >> Debugs don't show me anything. I was looking to shut the messages off
> with
> >> a
> >> command similar to ip ospf mtu-ignore but I don't see one under the
> >> interface.
> >>
> >> I can try and set the metric for all devices in the AS and see what
> >> happens.
> >>
> >>
> >> On Sun, Nov 2, 2008 at 3:02 PM, Bob Sinclair <bob@bobsinclair.net>
> wrote:
> >>
> >> > Piotr,
> >> >
> >> > Check that the MTUs match on both devices. I notice one is a switch.
> >> > Though the specs do not require equal MTU (like OSPF does) Cisco
> >> routers
> >> > have been known to drop EIGRP packets over MTU mismatch issues.
> >> > The K-value mismatch error can be caused when the near side router
> does
> >> not
> >> > support the "goodbye" message, added around 12.2(3), but the far side
> >> does.
> >> >
> >> > HTH,
> >> >
> >> > Bob Sinclair CCIE 10427 CCSI 30427
> >> > www.netmasterclass.net
> >> >
> >> > Piotr wrote:
> >> >
> >> >> Switch:
> >> >>
> >> >> 05:04:04: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.5(FastEthernet0/18) is up: new adjacency
> >> >> --More--
> >> >> 05:05:23: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.5(FastEthernet0/18) is down: K-value mismatch
> >> >> --More--
> >> >> 05:05:26: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.5(FastEthernet0/18) is up: new adjacency
> >> >>
> >> >> router eigrp 100
> >> >> network 183.1.105.10 0.0.0.0
> >> >> network 183.1.107.10 0.0.0.0
> >> >> no auto-summary
> >> >> eigrp router-id 150.1.10.10
> >> >>
> >> >> interface FastEthernet0/18
> >> >> no switchport
> >> >> ip address 183.1.105.10 255.255.255.0
> >> >>
> >> >>
> >> >> Routing Protocol is "eigrp 100"
> >> >> Outgoing update filter list for all interfaces is not set
> >> >> Incoming update filter list for all interfaces is not set
> >> >> Default networks flagged in outgoing updates
> >> >> Default networks accepted from incoming updates
> >> >> EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
> >> >> EIGRP maximum hopcount 100
> >> >> EIGRP maximum metric variance 1
> >> >> Redistributing: eigrp 100
> >> >> EIGRP NSF-aware route hold timer is 240s
> >> >> Automatic network summarization is not in effect
> >> >> Maximum path: 4
> >> >> Routing for Networks:
> >> >> 183.1.105.10/32
> >> >> 183.1.107.10/32
> >> >> Routing Information Sources:
> >> >> Gateway Distance Last Update
> >> >> 183.1.107.7 90 00:07:43
> >> >> Distance: internal 90 external 170
> >> >>
> >> >>
> >> >>
> >> >>
> >> >> router:
> >> >> *Nov 2 13:55:54.926: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.10 (FastEthernet0/0) is down: retry limit exceeded
> >> >> RSRack1R5(config-router)#
> >> >> *Nov 2 13:55:57.322: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.10 (FastEthernet0/0) is up: new adjacency
> >> >> RSRack1R5(config-router)#
> >> >> *Nov 2 13:57:16.834: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.10 (FastEthernet0/0) is down: retry limit exceeded
> >> >> RSRack1R5(config-router)#
> >> >> *Nov 2 13:57:20.290: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> >> >> 183.1.105.10 (FastEthernet0/0) is up: new adjacency
> >> >>
> >> >>
> >> >> router eigrp 100
> >> >> network 183.1.105.5 0.0.0.0
> >> >> no auto-summary
> >> >> eigrp router-id 150.1.5.5
> >> >>
> >> >>
> >> >> interface FastEthernet0/0
> >> >> ip address 183.1.105.5 255.255.255.0
> >> >> duplex auto
> >> >> speed auto
> >> >>
> >> >>
> >> >> Routing Protocol is "eigrp 100"
> >> >> Outgoing update filter list for all interfaces is not set
> >> >> Incoming update filter list for all interfaces is not set
> >> >> Default networks flagged in outgoing updates
> >> >> Default networks accepted from incoming updates
> >> >> EIGRP metric weight K1=1, K2=0, K3=1, K4=0, K5=0
> >> >> EIGRP maximum hopcount 100
> >> >> EIGRP maximum metric variance 1
> >> >> Redistributing: eigrp 100
> >> >> EIGRP NSF-aware route hold timer is 240s
> >> >> Automatic network summarization is not in effect
> >> >> Maximum path: 4
> >> >> Routing for Networks:
> >> >> 183.1.105.5/32
> >> >> Routing Information Sources:
> >> >> Gateway Distance Last Update
> >> >> 183.1.105.10 90 00:09:49
> >> >> Distance: internal 90 external 170
> >> >>
> >> >>
> >> >> Blogs and organic groups at http://www.ccie.net
> >> >>
> >> >>
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-- 
Narbik Kocharians
CCSI#30832, CCIE# 12410 (R&S, SP, Security)
www.MicronicsTraining
www.Net-Workbooks.com
Sr. Technical Instructor

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