GlennComiskey
Technical User
Hi,
In the process of setting-up a two router (C2620 & C2503) lab in prepartion for CCNA study. Have connected via DCE/DTE crossover cable. Problem with C2620 in that it appears it does not receive any routing updates.
C2503#show run
Building configuration...
Current configuration:
!
version 11.2
no service password-encryption
no service udp-small-servers
no service tcp-small-servers
!
hostname C2503
!
enable secret 5 $1$7LOG$AH3gZ1sgy6BlVlXCqwcxQ/
enable password no
!
!
interface Ethernet0
ip address 192.168.3.254 255.255.255.0
no mop enabled
!
interface Serial0
no ip address
shutdown
!
interface Serial1
ip address 192.168.2.2 255.255.255.0
no keepalive
clockrate 64000
!
interface BRI0
no ip address
shutdown
!
router igrp 1
network 192.168.2.0
network 192.168.3.0
!
no ip classless
!
line con 0
line aux 0
line vty 0 4
password yes
login
!
end
C2503#
IGRP: received update from 192.168.2.20 on Serial1
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
IGRP: sending update to 255.255.255.255 via Ethernet0 (192.168.3.254)
IGRP: Update contains 0 interior, 2 system, and 0 exterior routes.
IGRP: Total routes in update: 2
IGRP: sending update to 255.255.255.255 via Serial1 (192.168.2.2)
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
IGRP: received update from 192.168.2.20 on Serial1
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
C2503#show 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, * - candidate default U - per-user static route, o - ODR
Gateway of last resort is not set
I 192.168.1.0/24 [100/8486] via 192.168.2.20, 00:00:50, Serial1
C 192.168.2.0/24 is directly connected, Serial1
C 192.168.3.0/24 is directly connected, Ethernet0
C2620#show run
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname C2620
!
enable secret 5 $1$hER3$LXK9tA9hGnNHlWSewM/dG1
enable password password
!
clock timezone GMT 0
clock summer-time gmt recurring
ip subnet-zero
!
interface FastEthernet0/0
ip address 192.168.1.245 255.255.255.0
no ip directed-broadcast
full-duplex
no mop enabled
!
interface Serial0/0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0/1
ip address 192.168.2.20 255.255.255.0
no ip directed-broadcast
no keepalive
!
router igrp 1
network 192.168.1.0
network 192.168.2.0
!
ip classless
ip http server
!
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
!
line con 0
transport input none
line aux 0
line vty 0 4
password passw0rd
login
!
no scheduler allocate
end
C2620#
07:54:49: IGRP: sending update to 255.255.255.255 via FastEthernet0/0 (192.168.1.245)
07:54:49: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:54:49: IGRP: Total routes in update: 1
07:54:49: IGRP: sending update to 255.255.255.255 via Serial0/1
(192.168.2.20)
07:54:49: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:54:49: IGRP: Total routes in update: 1
07:56:06: IGRP: sending update to 255.255.255.255 via FastEthernet0/0 (192.168.1.245)
07:56:06: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:56:06: IGRP: Total routes in update: 1
07:56:06: IGRP: sending update to 255.255.255.255 via Serial0/1
(192.168.2.20)
07:56:06: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:56:06: IGRP: Total routes in update: 1
C2620#show 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, * - candidate default U - per-user static route, o - ODR T - traffic engineered route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial0/1
The above output shows both routers sending routing packets, and that C2503 receives and processes, but C2620 does not appear to receive even though the serial link is working.
The same behaviour was observed when the routers were config'd to use RIP instead of IGRP. The routers have two
(2) serial ports and the DCE/DTE cable has been used in all four possible setups, i.e. S0/S0, S0/S1, S1/S0/ S1/S1, and with both routers acting as DCE and config'd to provide the clock timing, i.e. clock rate 64000.
Both routers are plugged into a C2900XL which is, normally, configured for two VLANs (1, 2) with a router attached to each.
C2900>show int status
Port Name Status Vlan Duplex Speed Type
------- ------------------ ------------ -------- ------
Fa0/16 connected 1 A-Full A-100 100BaseTX/FX
Fa0/18 connected 2 A-Half A-10 100BaseTX/FX
When both routers are attached to the same VLAN, both report receiving updates from invalid source:
C2620#
00:18:00: IGRP: received update from invalid source 192.168.3.254 on FastEthernet0/0
C2503#
IGRP: received update from invalid source 192.168.1.245 on Ethernet0
IGRP: received update from 192.168.2.20 on Serial1
This behaviour is, as I understand it, normal. The C2503 also reports receiving a valid update via the serial link.
C2503#show int serial 0
Serial0 is administratively down, line protocol is down
C2503#show int serial 1
Serial1 is up, line protocol is up
C2620#show int serial 0/0
Serial0/0 is administratively down, line protocol is down
C2620#show int serial 0/1
Serial0/1 is up, line protocol is up
This test was simply to confirm routing updates are being sent.
Any help gratefully received.
TIA,
GC
In the process of setting-up a two router (C2620 & C2503) lab in prepartion for CCNA study. Have connected via DCE/DTE crossover cable. Problem with C2620 in that it appears it does not receive any routing updates.
C2503#show run
Building configuration...
Current configuration:
!
version 11.2
no service password-encryption
no service udp-small-servers
no service tcp-small-servers
!
hostname C2503
!
enable secret 5 $1$7LOG$AH3gZ1sgy6BlVlXCqwcxQ/
enable password no
!
!
interface Ethernet0
ip address 192.168.3.254 255.255.255.0
no mop enabled
!
interface Serial0
no ip address
shutdown
!
interface Serial1
ip address 192.168.2.2 255.255.255.0
no keepalive
clockrate 64000
!
interface BRI0
no ip address
shutdown
!
router igrp 1
network 192.168.2.0
network 192.168.3.0
!
no ip classless
!
line con 0
line aux 0
line vty 0 4
password yes
login
!
end
C2503#
IGRP: received update from 192.168.2.20 on Serial1
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
IGRP: sending update to 255.255.255.255 via Ethernet0 (192.168.3.254)
IGRP: Update contains 0 interior, 2 system, and 0 exterior routes.
IGRP: Total routes in update: 2
IGRP: sending update to 255.255.255.255 via Serial1 (192.168.2.2)
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
IGRP: received update from 192.168.2.20 on Serial1
IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
IGRP: Total routes in update: 1
C2503#show 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, * - candidate default U - per-user static route, o - ODR
Gateway of last resort is not set
I 192.168.1.0/24 [100/8486] via 192.168.2.20, 00:00:50, Serial1
C 192.168.2.0/24 is directly connected, Serial1
C 192.168.3.0/24 is directly connected, Ethernet0
C2620#show run
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname C2620
!
enable secret 5 $1$hER3$LXK9tA9hGnNHlWSewM/dG1
enable password password
!
clock timezone GMT 0
clock summer-time gmt recurring
ip subnet-zero
!
interface FastEthernet0/0
ip address 192.168.1.245 255.255.255.0
no ip directed-broadcast
full-duplex
no mop enabled
!
interface Serial0/0
no ip address
no ip directed-broadcast
shutdown
!
interface Serial0/1
ip address 192.168.2.20 255.255.255.0
no ip directed-broadcast
no keepalive
!
router igrp 1
network 192.168.1.0
network 192.168.2.0
!
ip classless
ip http server
!
dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
!
line con 0
transport input none
line aux 0
line vty 0 4
password passw0rd
login
!
no scheduler allocate
end
C2620#
07:54:49: IGRP: sending update to 255.255.255.255 via FastEthernet0/0 (192.168.1.245)
07:54:49: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:54:49: IGRP: Total routes in update: 1
07:54:49: IGRP: sending update to 255.255.255.255 via Serial0/1
(192.168.2.20)
07:54:49: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:54:49: IGRP: Total routes in update: 1
07:56:06: IGRP: sending update to 255.255.255.255 via FastEthernet0/0 (192.168.1.245)
07:56:06: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:56:06: IGRP: Total routes in update: 1
07:56:06: IGRP: sending update to 255.255.255.255 via Serial0/1
(192.168.2.20)
07:56:06: IGRP: Update contains 0 interior, 1 system, and 0 exterior routes.
07:56:06: IGRP: Total routes in update: 1
C2620#show 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, * - candidate default U - per-user static route, o - ODR T - traffic engineered route
Gateway of last resort is not set
C 192.168.1.0/24 is directly connected, FastEthernet0/0
C 192.168.2.0/24 is directly connected, Serial0/1
The above output shows both routers sending routing packets, and that C2503 receives and processes, but C2620 does not appear to receive even though the serial link is working.
The same behaviour was observed when the routers were config'd to use RIP instead of IGRP. The routers have two
(2) serial ports and the DCE/DTE cable has been used in all four possible setups, i.e. S0/S0, S0/S1, S1/S0/ S1/S1, and with both routers acting as DCE and config'd to provide the clock timing, i.e. clock rate 64000.
Both routers are plugged into a C2900XL which is, normally, configured for two VLANs (1, 2) with a router attached to each.
C2900>show int status
Port Name Status Vlan Duplex Speed Type
------- ------------------ ------------ -------- ------
Fa0/16 connected 1 A-Full A-100 100BaseTX/FX
Fa0/18 connected 2 A-Half A-10 100BaseTX/FX
When both routers are attached to the same VLAN, both report receiving updates from invalid source:
C2620#
00:18:00: IGRP: received update from invalid source 192.168.3.254 on FastEthernet0/0
C2503#
IGRP: received update from invalid source 192.168.1.245 on Ethernet0
IGRP: received update from 192.168.2.20 on Serial1
This behaviour is, as I understand it, normal. The C2503 also reports receiving a valid update via the serial link.
C2503#show int serial 0
Serial0 is administratively down, line protocol is down
C2503#show int serial 1
Serial1 is up, line protocol is up
C2620#show int serial 0/0
Serial0/0 is administratively down, line protocol is down
C2620#show int serial 0/1
Serial0/1 is up, line protocol is up
This test was simply to confirm routing updates are being sent.
Any help gratefully received.
TIA,
GC