[c-nsp] Am I being very stupid or....

[Chris Knipe]

Hi All,

I can't believe I am doing this, but I am either missing something VERY
obvious, or I am in need for some assistance on this one... 

I have a VLAN configured on a Port-Channel (all other VLAN's on the same
Port-Channel is working absolutely fine).

#sh run int po1.105
Building configuration...

Current configuration : 429 bytes
!
interface Port-channel1.105
encapsulation dot1Q 105
 ip address 198.18.0.1 255.255.255.240
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 ip nbar protocol-discovery
 ip virtual-reassembly in
 ip verify unicast reverse-path
 keepalive 30
end

The interface is up/up
#sh int po1.105
Port-channel1.105 is up, line protocol is up 
  Hardware is GEChannel, address is 0021.d816.0380 (bia 0021.d816.0380)
  Description: WBTG-HS01 LAN
  Internet address is 198.18.0.1/28
  MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec, 
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation 802.1Q Virtual LAN, Vlan ID  105.
  ARP type: ARPA, ARP Timeout 04:00:00
  Keepalive set (30 sec)
  Last clearing of "show interface" counters never

Yet, from the console on the router ON WHICH the Interface is configured
(yes, local router - this is not even a remote ping over a wire):
#ping 198.18.0.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 198.18.0.1, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)

Can someone perhaps shed some light for me as to why this would be
occurring?  We're looking at a C3825 running IOS 12.5

Thanks for your time - hopefully this is me being an 1d10t

--
Chris.