Some Questions on VLAN Trunking and Layer 3 Routing

Hope this is not to verbose.

-- What I am trying to do:

I am trying to configure a Cisco 2948G-L3 and a Cisco 3548 for vlan
trunking. I am

currently using the Cisco 2948G-L3 as a router. It is not configured
with VLANs, it has

various groups of ports configured in seven different BVIs. Each BVI
has an ip assigned

and acts as the default gateway for end stations on its respective
subnet. This all

works great and we have used it for years.

I am now trying to figure out how to configure the Cisco 2948G-L3 to
terminate a VLAN

trunk from a Nortel switch that we will be getting soon for some
wireless phones. We

will also be using the Nortel wireless network for a few wireless
workstations and

laptops. We will have four VLANs on the Nortel switch. Two of them do
not need to trunk

to the Cisco 2948G-L3 as they will have ports on the Nortel switch
assigned to them to

get to devices.

I also thought I would create and additional BVI, Bridge-group 111 on
the Cisco 2948G-L3

to bridge VLAN1 to the other switch for management.

We do want to trunk two VLANs so they can be routed to our other
subnets. To simmulate

the Nortel switch, I am using the Cisco 3548 to work out the
configuration.

What I have done is created the VLANs on the Cisco 3548. Configured
fa0/1 as a trunk.

I am using dot1q as the trunk protocol. Configured the trunk to allow
only VLANs 1,

100, and 200. Vtp is set to transparent.

On the Cisco 2948G-L3 I configured fa44 with three
subinterfaces:fa44.1, fa44.100, and

fa44.200. They are configure with dot1q and fa44.100 and fa44.200
have ip addresses

assigned. I made fa44.1 a member of bridge-group 111.

BVI111 on the Cisco 2948G-L3 has ip address 192.168.11.1 255.255.255.0
and VLAN 1 on the

Cisco 3548 has ip address 192.168.11.2 with a default gateway of
192.168.11.1.

-- A Basic Question:

I am assuming that the subinterfaces fa44.100 and fa44.20 on the Cisco
2948G-L3 will

route to the other BVIs. Is this correct?

-- My Problem So Far:

My bridging of VLAN1 does not work as I cannot ping the VLAN1 ip
addresses across the

trunk. I have not tried the other subnets yet, but if the bridging
doesn't work the

others probably aren't either.

Is there a way to confirm the trunk is working? The interfaces line
protocols are up.


Here is the config of my subinterfaces on the Cisco 2948G-L3 where the
trunk comes in.

interface FastEthernet44
no ip address
no ip directed-broadcast
!
interface FastEthernet44.1
encapsulation dot1Q 1 native
no ip directed-broadcast
bridge-group 111
!
interface FastEthernet44.100
encapsulation dot1Q 100
ip address 192.168.8.1 255.255.255.0
ip helper-address 192.168.3.4
no ip directed-broadcast
!
interface FastEthernet44.200
encapsulation dot1Q 200
ip address 192.168.10.1 255.255.255.0
ip helper-address 192.168.3.4
no ip directed-broadcast


Here is the trunk on the Cisco 3548

interface FastEthernet0/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,100,200,1002-1005
switchport mode trunk

Any suggestions will be appreciated.

 

Finally got it working. I had forgotten the route ip command on the
new BVI, bridgegroup 111.