09-23-2007 01:40 AM - edited 03-05-2019 06:39 PM
Hello,
I'm currently replacing my 7200 series router with a 3550-12G. However, the syntax seems quite different. I have about 70 customers behind it, on DSL, WiFi and fibre.
What I'm trying do do is create a separate interface for my 5 dslams, and two interfaces for my distribution switches. I have created dhcp pools, no problem. But when I go about to make an interfaceface for one of my dslams this is the config int the switchport:
(Now, my dslam wants everything as a trunk.)
interface GigabitEthernet0/11
description !!! Trunk Ardalee DSLAM !!!
no switchport
no ip address
speed 100
duplex full
end
I get this message when I try to insert the following config:
Configuring IP routing on a LAN subinterface is only allowed if that
subinterface is already configured as part of an IEEE 802.10, IEEE 802.1Q, or IS
L vLAN.
Config:
interface Gig0/11.301
description !!! JohnDoe !!!
encapsulation dot1Q 301
ip address 172.50.50.1 255.255.255.252
no ip redirects
no ip proxy-arp
ip nat inside
Seems like a logical error message. But if i run the following command:
int gig0/11
switchport
do a sh run int gig0/11:
interface GigabitEthernet0/11
description !!! Trunk Ardalee DSLAM !!!
switchport trunk encapsulation dot1q
switchport trunk native vlan 90
switchport trunk allowed vlan 90,300-399
switchport mode trunk
speed 100
duplex full
end
I can't paste the customer here either.
The question I'm wondering, How do I set up the interfaces and subinterfaces? Anyone got just a tiny sample for me to harvest? I need nat as well as real ip's. Thanks imensly for help!
\\mark
09-23-2007 10:14 AM
1) Why would you need sub-interfaces ?
If you want to assign a layer3 address to a Vlan, you can do this task by creating a SVI on the switch. Sub-interfaces are needed on trunking configuration on routers because they lack the 'Switch Virtual Interface' functionality.
2) 3550 Switches do not support NAT. You need a 6500 Series switch for NAT support. If NAT is a feature you need, I highly suggest migrating your configuration back to a router.
09-23-2007 10:31 AM
No nat?
Bloody hell. my solution to the 7200 problem right down the drain.
My problem is that I've got a 7200 router, but it routes with a throughput like a 10yr old dlink.
dammit. All week ruined.
Thanks VERY much for a quick reply. Otherwise, I'd be sitting cursing all day tomorrow over my switch.
\\markraves
09-23-2007 01:38 PM
You didn't say how old your 7200 was, but consider upgrading it to a 7204/6 vxr with an NPE-G2. That might help a bunch.
Roger
09-23-2007 10:32 PM
Hello,
It's actually a 7206VXR, but with npe-300 i think. not much needed really, it's not many customers.
I have a prior post in here where i describe my problems with it,
09-23-2007 10:33 AM
No nat?
Bloody hell. my solution to the 7200 problem right down the drain.
My problem is that I've got a 7200 router, but it routes with a throughput like a 10yr old dlink.
dammit. All week ruined.
Thanks VERY much for a quick reply. Otherwise, I'd be sitting cursing all day tomorrow over my switch.
\\markraves
09-23-2007 10:38 AM
Haha, I get it with the SVI. dunno why i didn't think about that earlier!!?? I actually am laughing now, I have a few svi set up other places in my network. lol. In addition to my management net..haha.
thanks,
\\markraves
09-23-2007 11:06 AM
I believe you were trying to mirror your 7200 config as much as possible and got caught on the moment. It happens to the best of us :)
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