12-17-2003 03:39 PM - edited 03-02-2019 12:25 PM
I have configured two 3620 routers with a serial connection. I can ping each router from the other router. I can ping local devices on the local networks but cannot ping to a device across the WAN connection.
Any suggestions?
12-17-2003 07:36 PM
Check if you have proper routing protocol or static routes configured to route between the sites. Also check the default gateway on the hosts. The test that you did is not enough to prove that your configuration is correct. Or paste the configs in your next reply for more analysis.
When you perform ping tests in scenarios like this, you should start from one end of the network (that is from a host) and then move outward.
Hope that helps!
12-18-2003 01:34 AM
Below are the configs. The default gateway is correct. I can ping the serial interface of local router but not the serial interface on other side of wan.
Router A Config
!
version 12.1
no service single-slot-reload-enable
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname routera
!
logging rate-limit console 10 except errors
!
ip subnet-zero
!
!
no ip finger
!
!
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
!
interface FastEthernet1/0.1
encapsulation dot1Q 1 native
ip address x.x.x.x 255.255.255.0
!
interface FastEthernet1/0.2
encapsulation dot1Q 2
ip address x.x.x.x 255.255.255.0
!
interface FastEthernet1/0.3
encapsulation dot1Q 3
ip address x.x.x.x 255.255.255.0
!
interface Serial1/0
bandwidth 2048
ip address x.x.x.x 255.255.255.252
encapsulation ppp
clockrate 2000000
!
router eigrp 10
network x.x.x.0 0.0.0.3
network x.x.x.0 0.0.0.255
network x.x.x.0 0.0.0.255
network x.x.x.0 0.0.0.255
auto-summary
eigrp log-neighbor-changes
!
ip classless
no ip http server
!
!
ip access-list standard PBX
permit 137.223.156.5
!
dial-peer cor custom
routerB Config
service timestamps log uptime
no service password-encryption
!
hostname routerb
!
logging rate-limit console 10 except errors
!
ip subnet-zero
!
!
no ip finger
!
!
!
call rsvp-sync
!
!
!
!
!
!
!
!
interface FastEthernet1/0
no ip address
duplex auto
speed auto
!
interface FastEthernet1/0.1
encapsulation dot1Q 1 native
ip address x.x.x.x 255.255.255.0
!
interface Serial1/0
bandwidth 2048
ip address x.x.x.x 255.255.255.252
encapsulation ppp
!
router eigrp 10
network x.x.x.0 0.0.0.3
network x.x.x.0 0.0.0.255
auto-summary
eigrp log-neighbor-changes
!
ip classless
no ip http server
!
!
dial-peer cor custom
12-18-2003 03:14 AM
Hi,
kindly remove the auto summarization of eigrp..using "no auto-summary" command in both the routers and revert back.
Regards
Amit Shrivastava
Network Engineer(Reliance Infocomm)
12-18-2003 03:29 AM
I've now done this - What do you mean by revert back because I'm still having no success. I've attached the sh ip route and sh ip eigrp topology:
sh ip route
Codes: C - connected, S - static, I - IGRP, 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, 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 not set
137.223.0.0/16 is variably subnetted, 6 subnets, 3 masks
C 137.223.10.0/30 is directly connected, Serial1/0
C 137.223.10.2/32 is directly connected, Serial1/0
D 137.223.156.0/24 [90/1764352] via 137.223.10.2, 00:02:02, Serial1/0
C 137.223.157.0/24 is directly connected, FastEthernet1/0.1
D 137.223.154.0/24 [90/1764352] via 137.223.10.2, 00:02:02, Serial1/0
D 137.223.155.0/24 [90/1764352] via 137.223.10.2, 00:02:02, Serial1/0
routerB#sh ip eigrp top
IP-EIGRP Topology Table for AS(10)/ID(137.223.157.1)
Codes: P - Passive, A - Active, U - Update, Q - Query, R - Reply,
r - reply Status, s - sia Status
P 137.223.10.0/30, 1 successors, FD is 1761792
via Connected, Serial1/0
P 137.223.10.1/32, 0 successors, FD is Inaccessible
via 137.223.10.2 (2273792/1761792), Serial1/0
P 137.223.10.2/32, 1 successors, FD is 1761792
via Rconnected (1761792/0)
P 137.223.156.0/24, 1 successors, FD is 1764352
via 137.223.10.2 (1764352/28160), Serial1/0
P 137.223.157.0/24, 1 successors, FD is 28160
via Connected, FastEthernet1/0.1
P 137.223.154.0/24, 1 successors, FD is 1764352
via 137.223.10.2 (1764352/28160), Serial1/0
P 137.223.155.0/24, 1 successors, FD is 1764352
via 137.223.10.2 (1764352/28160), Serial1/0
routerB#
12-18-2003 03:59 AM
Kindly clarify ur earlier meassge" I can ping the serial interface of local router but not the serial interface on other side of wan."
Does this mean u are trying to ping from local host pc or router??
if its router then try to shutd and no shutd the serial interface at both ends of router and if its from Lan pc then try to shutd and no shutd all the fastethernet ports of both the routers.
I mean to say its better to restart the router at both end and then check.
Hoping for the best..
Amit
12-19-2003 03:02 AM
I've restarted both routers but still have the same problem.
If I telnet to the router I can ping any device on either side. However from a command prompt from the pc I can only ping devices on the local network.
12-18-2003 04:06 AM
be careful about the defaultgateway settings on your PCs at both sides of the WAN
12-19-2003 03:05 AM
The default gateway is the fastethernet address of the router.
12-19-2003 03:39 AM
try to ping(extended) the hosts of either side from router using source ip of the router fasethernet port.In ur case one router is connected to three vlans so u can use three ips one by one and perform the ping test. And the same thing u can do that or other router which is connected to one vlan only.
If u are succesful doing this then telnet to switch and try to ping hosts of either sides from switch and check if its happening.
If from switches on eiher side of the wan u are not able to ping the hosts of either side, then pls check the switch config.Are u using any layer 3 switch or layer 2 switch??
12-19-2003 04:15 AM
when I telnet to switch I can ping devices on local network, fastethernet int of router but not serial int of router
switch config
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname srvswitch
!
enable secret xxxxxxx.
!
ip subnet-zero
ip routing
!
ip ssh time-out 120
ip ssh authentication-retries 3
!
spanning-tree mode pvst
spanning-tree extend system-id
!
!
!
interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport mode trunk
no ip address
!
interface FastEthernet0/2
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/3
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/4
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/5
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/6
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/7
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/8
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/9
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/10
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/11
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/12
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/13
switchport access vlan 2
switchport mode access
no ip address
!
interface FastEthernet0/14
switchport access vlan 2
switchport mode access
no ip address
!
interface FastEthernet0/15
switchport access vlan 2
switchport mode access
no ip address
!
interface FastEthernet0/16
switchport access vlan 2
switchport mode access
no ip address
!
interface FastEthernet0/17
switchport access vlan 2
switchport mode access
no ip address
!
interface FastEthernet0/18
switchport access vlan 3
switchport mode access
no ip address
!
interface FastEthernet0/19
switchport access vlan 3
switchport mode access
no ip address
!
interface FastEthernet0/20
switchport access vlan 3
switchport mode access
no ip address
!
interface FastEthernet0/21
switchport access vlan 3
switchport mode access
no ip address
!
interface FastEthernet0/22
switchport access vlan 5
switchport mode access
no ip address
!
interface FastEthernet0/23
switchport mode dynamic desirable
no ip address
!
interface FastEthernet0/24
switchport mode dynamic desirable
no ip address
!
interface GigabitEthernet0/1
switchport mode dynamic desirable
no ip address
!
interface GigabitEthernet0/2
switchport mode dynamic desirable
no ip address
!
interface Vlan1
ip address x.x.x.x 255.255.255.0
!
interface Vlan2
ip address x.x.x.x 255.255.255.0
!
interface Vlan3
ip address x.x.x.x 255.255.255.0
!
!
ip default-gateway 137.223.156.1
ip classless
ip http server
12-19-2003 04:38 AM
Hi,
Ur trunk port of the switch should be the part of all the three vlans u have configured. Pls do it and tell us the result.
Amit
12-19-2003 05:01 AM
Hi Amit
Is this done by the switchport trunk allowed vlan all?
If not how is this done?
thanks
Michael
12-19-2003 05:50 AM
Hi michael,
sorry,u don't need to do anything on trunk port since by default it allows all the vlans.The problem lies somewhere else in LAN only...need to think over..will get back to u soon.
12-19-2003 06:06 AM
Hi Amit
I have removed ip routing cmd on switch can now ping fastethernet int of router on other side of wan however cannot ping beyond.
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