Re: 3560's not routing...

ricschaaf · ‎05-03-2007

Can anyone please tell me why these two 3560's are not routing?

Test#sh run

Building configuration...

Current configuration : 2605 bytes

!

version 12.2

!

no aaa new-model

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.1 255.255.255.252

!

interface Vlan1

ip address 10.90.153.1 255.255.255.0

!

router eigrp 1

network 10.90.153.0 0.0.0.255

network 192.168.1.0 0.0.0.3

auto-summary

!

ip default-gateway 10.90.153.200

ip classless

ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/17

!

-----------------------------------------------

E3#sh run

Building configuration...

Current configuration : 2816 bytes

!

version 12.2

!

no aaa new-model

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.2 255.255.255.252

!

interface GigabitEthernet0/48

switchport trunk encapsulation dot1q

switchport mode trunk

duplex full

macro description cisco-switch

auto qos voip trust

spanning-tree link-type point-to-point

!

interface Vlan1

ip address 172.23.31.34 255.255.255.224

!

router eigrp 1

network 172.23.31.32 0.0.0.31

network 192.168.1.0 0.0.0.3

auto-summary

!

ip default-gateway 172.23.31.33

ip classless

ip route 0.0.0.0 0.0.0.0 172.23.31.33

!

chris.lepa · ‎05-03-2007

Hi,

I'm not too sure what you're issue is, "not routing" is a pretty vague statement. Are your devices forming eigrp neighbor relationships? If so, it may be an issue with "auto-summary". In eigrp configuration, type "no auto-summary" so you're networks aren't summarized at the classful boundary.

-Chris

ricschaaf · ‎05-03-2007

Thanks for responding.

I can't ping from the 172.23.31.32/27 net

to the 10.90.153.0/24 net

Attached is a screen shot of the routing tables of one of the switches

chris.lepa · ‎05-03-2007

Well, it seems that the 10.90.153.0 network is not in your eigrp routing table at all, meaning that anything destined for that network will use the static route you have applied (ip route 0.0.0.0 0.0.0.0 172.23.31.33). I'm not exactly sure what this route is doing... Is there more than the 2 devices stated in this network?

-Chris

ricschaaf · ‎05-03-2007

There is a router attached to port 48 that

is the default gateway for the whole network.

I turned off auto-summarization on the switch named Test and it now shows the 172.23.31.32/27 net in it's routing table,

but when I did it on the switch E3, it did not pick up the 10.90.153.0/24 net.

?

Current configs and tables attached.

Thanks for your help,

Ric

----------------------------------------

E3#sh run

Building configuration...

Current configuration : 2819 bytes

!

version 12.2

!

no aaa new-model

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.2 255.255.255.252

!

interface GigabitEthernet0/48

switchport trunk encapsulation dot1q

switchport mode trunk

duplex full

macro description cisco-switch

auto qos voip trust

spanning-tree link-type point-to-point

!

interface Vlan1

ip address 172.23.31.34 255.255.255.224

!

router eigrp 1

network 172.23.31.32 0.0.0.31

network 192.168.1.0 0.0.0.3

no auto-summary

!

ip default-gateway 172.23.31.33

ip classless

ip route 0.0.0.0 0.0.0.0 172.23.31.33

----------------------------------------

Test#sh run

Building configuration...

Current configuration : 2600 bytes

!

no aaa new-model

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.1 255.255.255.252

!

interface Vlan1

ip address 10.90.153.1 255.255.255.0

!

router eigrp 1

network 10.90.153.0 0.0.0.255

network 192.168.1.0 0.0.0.3

no auto-summary

!

ip default-gateway 172.23.31.33

ip classless

ip route 0.0.0.0 0.0.0.0 172.23.31.33

chris.lepa · ‎05-03-2007

Based on your EIGRP configuration, I can't see anything wrong. I DO see a problem with your static default route on Test though.

Neither "ip route 0.0.0.0 0.0.0.0 172.23.31.33" or "ip default-gateway 172.23.31.33" should be configured on Test because that is not a next hop address this router is familiar with.

Instead, I suggest that you enter the "default-information originate" or "redistribute static" command in EIGRP on your E3 router. This maaaay fix your issues.

-Chris

chris.lepa · ‎05-03-2007

Oh, you should also check to see if Vlan 1 is even UP on Test. This route wont get advertised by EIGRP if the SVI is down, might want to check that out too if the previous solution doesn't do anything.

ricschaaf · ‎05-04-2007

VLAN 1 is up on Test. I can connect a client as 10.90.153.x

and ping the E3 switch at 172.23.31.34, but no other IP's

on that 172.23.31.32/27 net.

I changed the default on Test as shown below and no luck.

There's something on the E3 switch that is not right.

I even tried making VLAN 1 passive on E3 and no luck.

Thanks, Ric

---------------------------------------------------------

Test#sh run

Building configuration...

Current configuration : 2575 bytes

!

version 12.2

!

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.1 255.255.255.252

!

interface Vlan1

ip address 10.90.153.1 255.255.255.0

!

router eigrp 1

network 10.90.153.0 0.0.0.255

network 192.168.1.0 0.0.0.3

no auto-summary

!

ip classless

ip route 0.0.0.0 0.0.0.0 GigabitEthernet0/17

Test#show ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is 0.0.0.0 to network 0.0.0.0

172.23.0.0/27 is subnetted, 1 subnets

D 172.23.31.32 [90/3072] via 192.168.1.2, 16:54:44, GigabitEthernet0/17

10.0.0.0/24 is subnetted, 1 subnets

C 10.90.153.0 is directly connected, Vlan1

192.168.1.0/30 is subnetted, 1 subnets

C 192.168.1.0 is directly connected, GigabitEthernet0/17

S* 0.0.0.0/0 is directly connected, GigabitEthernet0/17

-------------------------------------------------------------

E3#sh run

Building configuration...

Current configuration : 2819 bytes

!

version 12.2

!

no aaa new-model

ip subnet-zero

ip routing

!

no file verify auto

spanning-tree mode pvst

spanning-tree extend system-id

!

vlan internal allocation policy ascending

!

interface GigabitEthernet0/17

no switchport

ip address 192.168.1.2 255.255.255.252

!

interface GigabitEthernet0/48

switchport trunk encapsulation dot1q

switchport mode trunk

duplex full

macro description cisco-switch

auto qos voip trust

spanning-tree link-type point-to-point

!

interface Vlan1

ip address 172.23.31.34 255.255.255.224

!

router eigrp 1

network 172.23.31.32 0.0.0.31

network 192.168.1.0 0.0.0.3

no auto-summary

!

ip default-gateway 172.23.31.33

ip classless

ip route 0.0.0.0 0.0.0.0 172.23.31.33

E3#show ip route

Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP

D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area

N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2

E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP

i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2

ia - IS-IS inter area, * - candidate default, U - per-user static route

o - ODR, P - periodic downloaded static route

Gateway of last resort is 172.23.31.33 to network 0.0.0.0

172.23.0.0/27 is subnetted, 1 subnets

C 172.23.31.32 is directly connected, Vlan1

192.168.1.0/30 is subnetted, 1 subnets

C 192.168.1.0 is directly connected, GigabitEthernet0/17

S* 0.0.0.0/0 [1/0] via 172.23.31.33

Amit Singh · ‎05-04-2007

Its a strange situation which is happening. EIGRP is making a neighbor relationship as far as " Test " switch is concerned. What happens when you issue " show ip eigrp neighbor " on E3 switch. Do you see the test listed a neighbor.

Here are the two things that we can try:

1.Try changing the connection between the 2 switches to a vlan SVI instead of using the routed port.Let us check if the eigrp neighbor relationship comes up.

2.Try debugging thye rigrp relationship and attach the debugs.

-amit singh

ricschaaf · ‎05-04-2007

E3>show ip eigrp neighbor

IP-EIGRP neighbors for process 1

H Address Interface Hold Uptime SRTT RTO Q Seq Type

(sec) (ms) Cnt Num

0 192.168.1.1 Gi0/17 12 21:41:42 5 200 0 12

On suggestion #1, do you mean connect them together without using the 192.168.1.0/30 net?

Thanks, Ric

chris.lepa · ‎05-04-2007

He means:

Test#

int vlan 192

ip add 192.168.1.1 255.255.255.252

no shut

int gi0/17

switchport mode access

switchport access vlan 192

E3#

int vlan 192

ip add 192.168.1.2 255.255.255.252

no shut

int gi0/17

switchport mode access

switchport access vlan 192

At least I think he means that... Give it a shot and get back to us.

-Chris

Amit Singh · ‎05-04-2007

Yeah. I meant the same as posted by Chris. The output in your earlier post shows that E has a succesful naighbor relationship with test.Please paste the output of " show EIGRP topo " from the E3.

Also let me know the IOS version that your are running on 3560's.

-amit singh

ricschaaf · ‎05-04-2007

E3>show ip eigrp topo

IP-EIGRP Topology Table for AS(1)/ID(192.168.1.2)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

P 192.168.1.0/30, 1 successors, FD is 2816

via Connected, GigabitEthernet0/17

P 172.23.31.32/27, 1 successors, FD is 2816

via Connected, Vlan1

version 12.2

E3 is not picking up the 10.90.153.0/24 net in it's routing table. Diagram is attached.

?

Thanks, Ric

ricschaaf · ‎05-04-2007

I really wnat to fihure this out....

Here's what Test looks like:

Test>show ip eigrp topo

IP-EIGRP Topology Table for AS(1)/ID(192.168.1.1)

Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,

r - reply Status, s - sia Status

P 192.168.1.0/30, 1 successors, FD is 2816

via Connected, GigabitEthernet0/17

P 172.23.31.32/27, 1 successors, FD is 3072

via 192.168.1.2 (3072/2816), GigabitEthernet0/17

P 10.90.153.0/24, 1 successors, FD is 2816

via Connected, Vlan1

Thanks very much, Ric

sundar.palaniappan · ‎05-04-2007

Did you at any point had an interface on router E3 configured with an IP from 10.90.153.0/24 subnet?