04-22-2011 05:47 PM - edited 03-06-2019 04:45 PM
New to the universal IOS and having an interesting problem. I've got a new 3750X-48T-S with the universal image and what should be an IP Base key pre-installed, but I can't get L3 routing enabled. Despite having 'ip routing' enabled, showing the correct featureset in the 'Show Version' response, and having static routes defined, I don't see any routes in the routing table:
Here are some specifics:
From 'Show Version'
License Level: ipbase
License Type: Permanent
Next reload license Level: ipbase
Switch Ports Model SW Version SW Image
------ ----- ----- ---------- ----------
* 1 54 WS-C3750X-48 12.2(55)SE1 C3750E-UNIVERSALK9-M
From the running configuration
ip routing
!
ip route 0.0.0.0 0.0.0.0 192.168.1.1
ip route 10.10.10.0 255.255.255.0 192.168.2.1
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
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 not set
Any ideas what I'm missing?
04-22-2011 07:25 PM
We need additional information to be able to give a good answer. Perhaps a good place to start would be to post the output of show ip interface brief.
HTH
Rick
Sent from Cisco Technical Support iPhone App
04-23-2011 07:10 AM
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM administratively down down
Vlan4 192.168.1.2 YES NVRAM up down
Vlan5 192.168.2.2 YES NVRAM up down
Vlan1000 10.10.10.1 YES NVRAM up down
FastEthernet0 unassigned YES manual down down
GigabitEthernet1/0/1 unassigned YES unset down down
GigabitEthernet1/0/2 unassigned YES unset down down
This is one of those cases where sleep may help a problem. The switch I've been working on is being prepared solo on a remote bench, with the only connection to it being the console cable. Thus no L2 interfaces are up/up, which means no VLAN interfaces are up/up, and no connected routes are added to the table. That part I understood and was in the brain. Here's what I hope is the "Aha!" moment. Static routes are normally added to the table and are not tested for state, and only removed if the connected interface is down. So, this makes me think that since I have NO interfaces in an up/up state, a static route to an address in a VLAN that is up/down would not be added to the routing table, and so the table would remain empty until at least one interface comes up...
Can someone confirm this is my issue? I don't have a way to connect anything to this switch at the moment.
04-23-2011 08:50 AM
Yes your understanding of the situation is correct. A static route is not added to the routing table until the interface to which it goes is in the up state. This is what I was aiming for when I requested the output of show ip interface brief.
HTH
Rick
Sent from Cisco Technical Support iPhone App
07-15-2011 04:07 AM
Hi Rick,
I got the same issue here. But I have connected the PC to 3750x already and it still cannot go through. The switch can ping to outside world but the PC cannot. What kind of information should I post to you for troubleshoot?
Regards,
Thomas
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