From: Piotr (usaccie@gmail.com)
Date: Sun Nov 02 2008 - 22:33:14 ARST
SW4 > R5 - layer 2 path
sw4 f0/15 > sw1 f0/21 > r5 f0/0
On Sun, Nov 2, 2008 at 7:20 PM, Hobbs <deadheadblues@gmail.com> wrote:
> Let's focus on the basics.
>
> You said "From R5 I can not ping 183.1.105.10."
>
> SW1 as far as I can tell is not routing between SW4 and R5 so we do not
> care about its routing table or whether it can ping any address. Sw4 and R5
> should have a layer 2 path somewhere. What is that path?
>
> Solve this issue first.
>
>
> On Sun, Nov 2, 2008 at 5:14 PM, Piotr <usaccie@gmail.com> wrote:
>
>> RSRack1SW1(config)#do sho int trunk
>>
>> Port Mode Encapsulation Status Native vlan
>> Fa0/13 on 802.1q trunking 46
>> Fa0/15 on 802.1q trunking 46
>> Fa0/21 on 802.1q trunking 1
>>
>> Port Vlans allowed on trunk
>> Fa0/13 1-4094
>> Fa0/15 1-4094
>> Fa0/21 1-4094
>>
>> Port Vlans allowed and active in management domain
>> Fa0/13 1,6,28,33,45-46,102,105,107
>> Fa0/15 1,6,28,33,45-46,102,105,107
>> Fa0/21 1,6,28,33,45-46,102,105,107
>>
>> Port Vlans in spanning tree forwarding state and not pruned
>> Fa0/13 1,6,28,33,45-46,102,105,107
>> Fa0/15 1,6,28,33,45-46,102,105,107
>> Fa0/21 1,6,28,33,45-46,102,105,107
>> RSRack1SW1(config)#
>>
>>
>>
>> RSRack1SW4(config-if)#do sho int trunk
>>
>> Port Mode Encapsulation Status Native vlan
>> Fa0/15 on 802.1q trunking 1
>> Fa0/19 on 802.1q trunking 46
>> Fa0/20 on 802.1q trunking 46
>>
>> Port Vlans allowed on trunk
>> Fa0/15 1-4094
>> Fa0/19 1-4094
>> Fa0/20 1-4094
>>
>> Port Vlans allowed and active in management domain
>> Fa0/15 1,6,28,33,45-46,102,105,107
>> Fa0/19 1,6,28,33,45-46,102,105,107
>> Fa0/20 1,6,28,33,45-46,102,105,107
>>
>> Port Vlans in spanning tree forwarding state and not pruned
>> Fa0/15 1,6,28,33,45-46,102,105,107
>> Fa0/19 1,6,28,33,45-46,102,105,107
>> Fa0/20 1,6,28,33,45-46,102,105,107
>> RSRack1SW4(config-if)#do sho cdp nei
>> Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
>> S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
>>
>> Device ID Local Intrfce Holdtme Capability
>> Platform Port ID
>> RSRack1SW3 Fas 0/20 132 S I
>> WS-C3550-2Fas 0/20
>> RSRack1SW3 Fas 0/19 132 S I
>> WS-C3550-2Fas 0/19
>> RSRack1SW3 Fas 0/21 132 S I
>> WS-C3550-2Fas 0/21
>> RSRack1SW2 Fas 0/18 157 R S I
>> WS-C3560-2Fas 0/21
>> RSRack1SW1 Fas 0/15 158 R S I
>> WS-C3560-2Fas 0/21
>> RSRack1R4 Fas 0/4 165 R S I
>> 2811 Fas 0/1
>> RSRack1R6 Fas 0/6 165 R S I
>> 2811 Fas 0/1
>>
>>
>> RSRack1SW1(config)#do ping 183.1.105.10
>>
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 183.1.105.10, timeout is 2 seconds:
>> !!!!!
>> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
>> RSRack1SW1(config)#do ping 183.1.105.5
>>
>> Type escape sequence to abort.
>> Sending 5, 100-byte ICMP Echos to 183.1.105.5, timeout is 2 seconds:
>> .....
>> Success rate is 0 percent (0/5)
>>
>>
>>
>>
>>
>> On Sun, Nov 2, 2008 at 7:09 PM, Piotr <usaccie@gmail.com> wrote:
>>
>>> R5 F0/0 has a physical connection to sw f0/5
>>>
>>> RSRack1R5(config-if)#do sri f0/0
>>> Building configuration...
>>>
>>> Current configuration : 95 bytes
>>> !
>>> interface FastEthernet0/0
>>> ip address 183.1.105.5 255.255.255.0
>>> duplex full
>>> speed 100
>>> end
>>>
>>>
>>> RSRack1SW1(config)#do sri f0/5
>>> Building configuration...
>>>
>>> Current configuration : 109 bytes
>>> !
>>> interface FastEthernet0/5
>>> switchport access vlan 105
>>> switchport mode access
>>> speed 100
>>> duplex full
>>> end
>>>
>>> On the topology map R5 F0/0 connects to sw4 f0/18
>>>
>>> SRack1SW4(config-router)# do sri f0/18
>>> Building configuration...
>>>
>>> Current configuration : 88 bytes
>>> !
>>> interface FastEthernet0/18
>>> no switchport
>>> ip address 183.1.105.10 255.255.255.0
>>> end
>>>
>>>
>>>
>>> On Sun, Nov 2, 2008 at 7:06 PM, Piotr <usaccie@gmail.com> wrote:
>>>
>>>> RSRack1SW1(config-if)#do sho ip route 183.1.105.5
>>>> Routing entry for 183.1.105.0/24
>>>> Known via "eigrp 100", distance 90, metric 30720, type internal
>>>> Redistributing via eigrp 100
>>>> Last update from 183.1.107.10 on FastEthernet0/14, 00:20:27 ago
>>>> Routing Descriptor Blocks:
>>>> * 183.1.107.10, from 183.1.107.10, 00:20:27 ago, via FastEthernet0/14
>>>> Route metric is 30720, traffic share count is 1
>>>> Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
>>>> Reliability 255/255, minimum MTU 1500 bytes
>>>> Loading 1/255, Hops 1
>>>>
>>>> RSRack1SW1(config-if)#do sho ip route 183.1.105.10
>>>> Routing entry for 183.1.105.0/24
>>>> Known via "eigrp 100", distance 90, metric 30720, type internal
>>>> Redistributing via eigrp 100
>>>> Last update from 183.1.107.10 on FastEthernet0/14, 00:20:31 ago
>>>> Routing Descriptor Blocks:
>>>> * 183.1.107.10, from 183.1.107.10, 00:20:31 ago, via FastEthernet0/14
>>>> Route metric is 30720, traffic share count is 1
>>>> Total delay is 200 microseconds, minimum bandwidth is 100000 Kbit
>>>> Reliability 255/255, minimum MTU 1500 bytes
>>>> Loading 1/255, Hops 1
>>>>
>>>>
>>>> On Sun, Nov 2, 2008 at 6:56 PM, Narbik Kocharians <narbikk@gmail.com>wrote:
>>>>
>>>>> 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
>>>>>> >> >>
>>>>>> >> >>
>>>>>> _______________________________________________________________________
>>>>>> >> >> Subscription information may be found at:
>>>>>> >> >> http://www.groupstudy.com/list/CCIELab.html
>>>>>> >>
>>>>>> >>
>>>>>> >> Blogs and organic groups at http://www.ccie.net
>>>>>> >>
>>>>>> >>
>>>>>> _______________________________________________________________________
>>>>>> >> Subscription information may be found at:
>>>>>> >> http://www.groupstudy.com/list/CCIELab.html
>>>>>>
>>>>>>
>>>>>> Blogs and organic groups at http://www.ccie.net
>>>>>>
>>>>>>
>>>>>> _______________________________________________________________________
>>>>>> Subscription information may be found at:
>>>>>> http://www.groupstudy.com/list/CCIELab.html
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Narbik Kocharians
>>>>> CCSI#30832, CCIE# 12410 (R&S, SP, Security)
>>>>> www.MicronicsTraining
>>>>> www.Net-Workbooks.com
>>>>> Sr. Technical Instructor
Blogs and organic groups at http://www.ccie.net
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