12-21-2012 02:19 AM - edited 03-04-2019 06:28 PM
I must be doing something dumb, but its baffling me, the router has a static route for a network 192.168.31.0/24 for example (in fact its ignoring all the 192.168.x.x entries in its table that use the 192.168.0.62 as next hop) but instead of using this route its simply using the gateway of last resort.
192.168.0.62 is pingable.
The default route is a firewall and when pinging 192.168.31.10 (for example) i see the packets hit the firewall, i.e ignore the route
idc01wancr01#sh ip route 192.168.31.0 255.255.255.0
% Network not in table
idc01wancr01#sh ip route 192.168.31.0 255.255.255.0 long
Codes: L - local, 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
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, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override
Gateway of last resort is 10.50.15.1 to network 0.0.0.0
I must be missing something simple as we have far more complex configs however i'm not seeing it.
config below...
Current configuration : 6704 bytes
!
! Last configuration change at 10:02:13 UTC Fri Dec 21 2012 by admin
! NVRAM config last updated at 22:15:59 UTC Thu Dec 20 2012 by admin
! NVRAM config last updated at 22:15:59 UTC Thu Dec 20 2012 by admin
version 15.3
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname idc01wancr01
!
boot-start-marker
boot system flash0:c3900-universalk9-mz.SPA.153-1.T.bin
boot system flash0:c3900-universalk9-mz.SPA.153-1.T.bi
boot-end-marker
!
!
logging buffered 51200
logging console critical
enable secret 5 <snip>
enable password 7 <snip>
!
no aaa new-model
!
!
crypto pki trustpoint TP-self-signed-2721064940
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-2721064940
revocation-check none
rsakeypair TP-self-signed-2721064940
!
!
crypto pki certificate chain TP-self-signed-2721064940
certificate self-signed 01
<snip>
quit
ip cef
!
!
!
!
!
!
ip flow-cache timeout active 1
no ip bootp server
ip domain list ocslms.co.uk
ip domain lookup source-interface GigabitEthernet0/1.25
ip multicast-routing
login on-failure log
login on-success log
ipv6 multicast rpf use-bgp
no ipv6 cef
!
multilink bundle-name authenticated
!
!
license udi pid C3900-SPE100/K9 sn FOC16140M7H
!
!
username admin privilege 15 password 7 <snip>
username livemon privilege 15 password 7 <snip>
!
redundancy
!
!
!
!
!
ip tcp synwait-time 10
csdb tcp synwait-time 30
csdb tcp idle-time 3600
csdb tcp finwait-time 5
csdb tcp reassembly max-memory 1024
csdb tcp reassembly max-queue-length 16
csdb udp idle-time 30
csdb icmp idle-time 10
csdb session max-session 65535
!
!
interface Null0
no ip unreachables
!
interface Embedded-Service-Engine0/0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
!
interface GigabitEthernet0/0
description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$$FW_INSIDE$
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex auto
speed auto
no mop enabled
!
interface GigabitEthernet0/1
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex full
speed 1000
no mop enabled
!
interface GigabitEthernet0/1.25
description ***IDC01 MGMT***$FW_INSIDE$
encapsulation dot1Q 25
ip address 10.0.25.30 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
!
interface GigabitEthernet0/1.831
description ***WAN_TRANSIT***$FW_INSIDE$
encapsulation dot1Q 831
ip address 10.50.15.30 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip nbar protocol-discovery
ip flow ingress
ip flow egress
!
interface GigabitEthernet0/2
description ***Uplink to WAN Aggregation switch Hyperion***
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
duplex full
speed 1000
no mop enabled
!
interface GigabitEthernet0/2.901
description ***94575***$FW_OUTSIDE$
encapsulation dot1Q 901
ip address 192.168.0.61 255.255.255.252
no ip redirects
no ip unreachables
ip verify unicast reverse-path
ip nbar protocol-discovery
ip flow ingress
ip flow egress
!
ip forward-protocol nd
!
ip http server
ip http authentication local
no ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
ip flow-export source GigabitEthernet0/1.831
ip flow-export version 9
ip flow-export destination 10.50.13.11 2055
!
ip route 0.0.0.0 0.0.0.0 10.50.15.1
ip route 10.0.10.172 255.255.255.255 10.0.25.1
ip route 192.168.24.0 255.255.252.0 192.168.0.62
ip route 192.168.99.0 255.255.255.0 192.168.0.62
ip route 192.168.254.0 255.255.255.0 10.0.25.1
ip route 196.168.9.0 255.255.255.0 192.168.0.62
ip route 196.168.24.0 255.255.252.0 192.168.0.62
ip route 196.168.28.0 255.255.255.0 192.168.0.62
ip route 196.168.29.0 255.255.255.0 192.168.0.62
ip route 196.168.31.0 255.255.255.0 192.168.0.62
ip route 196.168.32.0 255.255.255.0 192.168.0.62
ip route 196.168.77.0 255.255.255.0 192.168.0.62
!
ip sla auto discovery
ip sla 1
udp-jitter 192.168.0.62 5000 source-ip 192.168.0.61 codec g729a
ip sla schedule 1 life forever start-time now
logging trap debugging
no cdp run
!
!
snmp-server community <snip> RO 11
snmp-server ifindex persist
snmp-server location IDC01 R3R16
snmp-server contact IDC01 Operations <snip>
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps envmon
snmp-server enable traps entity-sensor threshold
snmp-server enable traps config
snmp-server enable traps ipsla
!
control-plane
!
!
!
line con 0
login local
line aux 0
line 2
no activation-character
no exec
transport preferred none
transport input all
transport output pad telnet rlogin lapb-ta mop udptn v120 ssh
stopbits 1
line vty 0 4
access-class 10 in
privilege level 15
password 7 <snip>
login local
transport input telnet ssh
line vty 5 15
access-class 10 in
privilege level 15
password 7 <snip>
login local
transport input telnet ssh
!
scheduler allocate 20000 1000
scheduler interval 500
ntp server 10.0.10.172 source GigabitEthernet0/1.25
!
end
Solved! Go to Solution.
12-24-2012 05:39 AM
Hi Adam,
Just tried to call you but you wern't available so though I would update you here.
I believe the issue is with your static routes as the statics appear to be typo'ed:
ip route 196.168.9.0 255.255.255.0 192.168.0.62
ip route 196.168.24.0 255.255.252.0 192.168.0.62
ip route 196.168.28.0 255.255.255.0 192.168.0.62
ip route 196.168.29.0 255.255.255.0 192.168.0.62
ip route 196.168.31.0 255.255.255.0 192.168.0.62
ip route 196.168.32.0 255.255.255.0 192.168.0.62
ip route 196.168.77.0 255.255.255.0 192.168.0.62
I believe these should be 192.168 not 196.168 hence them not appearing in the table (or am I missing something).
I would also suggest removing the encrypted passwords from your post as these can be easily decrypted (as I'm sure you're aware).
Regards,
Michael Wensley
Virgin Media Operations
12-21-2012 02:45 AM
Hello btmbmonitor,
it looks like the router treats the next-hop 192.168.0.62 as unreachable.
ip routing should be enabled according to the show ip route you showed us.
Can you check if:
the router can ping the 192.168.0.62
and what is more important does an ARP entry exist for 192.168.0.62?
show ip arp 192.168.0.62
If no ARP entry exists for the IP address the router will not use any static route using the IP address as next-hop.
If this is the case you need to check connectivity
Hope to help
Giuseppe
12-21-2012 03:24 AM
thats the thing, on the router ping 192.168.0.62 (the other end) is fine.
Ping 192.168.0.61 (my interface ip) does NOT work.
idc01wancr01#ping 192.168.0.61
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.61, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
idc01wancr01#ping 192.168.0.62
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.0.62, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/9/12 ms
if i remove ip verify unicast reverse-path then i CAN ping 192.168.0.61
12-21-2012 03:28 AM
oh, and yes, arp entry is fine, i can telnet to that router that end etc. Traffic flows UP the link and INTO this router as the default routes point that way. Its just the explicit statics are being ignored.
idc01wancr01#sh arp
Protocol Address Age (min) Hardware Addr Type Interface
Internet 1.2.3.4 - 2c54.2d26.6c00 ARPA GigabitEthernet0/0
Internet 10.0.25.1 0 0029.3287.32ce ARPA GigabitEthernet0/1.25
Internet 10.0.25.30 - 2c54.2d26.6c01 ARPA GigabitEthernet0/1.25
Internet 10.0.25.42 134 70ca.9b17.1981 ARPA GigabitEthernet0/1.25
Internet 10.50.15.1 3 5057.a8e1.4691 ARPA GigabitEthernet0/1.831
Internet 10.50.15.30 - 2c54.2d26.6c01 ARPA GigabitEthernet0/1.831
Internet 192.168.0.61 - 2c54.2d26.6c02 ARPA GigabitEthernet0/2.901
Internet 192.168.0.62 88 2c54.2de5.3740 ARPA GigabitEthernet0/2.901
12-21-2012 05:10 AM
if i get a device in the network (for example 192.168.31.11) for ping the route, then its it magically gets an entry in the routing table... its like its learning routes only when an entry from that network has traffic.
12-24-2012 05:39 AM
Hi Adam,
Just tried to call you but you wern't available so though I would update you here.
I believe the issue is with your static routes as the statics appear to be typo'ed:
ip route 196.168.9.0 255.255.255.0 192.168.0.62
ip route 196.168.24.0 255.255.252.0 192.168.0.62
ip route 196.168.28.0 255.255.255.0 192.168.0.62
ip route 196.168.29.0 255.255.255.0 192.168.0.62
ip route 196.168.31.0 255.255.255.0 192.168.0.62
ip route 196.168.32.0 255.255.255.0 192.168.0.62
ip route 196.168.77.0 255.255.255.0 192.168.0.62
I believe these should be 192.168 not 196.168 hence them not appearing in the table (or am I missing something).
I would also suggest removing the encrypted passwords from your post as these can be easily decrypted (as I'm sure you're aware).
Regards,
Michael Wensley
Virgin Media Operations
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