I have a customer with a 4507r, - 12.1.(14)E, dual Sup IVs.
With VLAN 1 interface configured with an IP address and no shut, the int shows as up/down until you put a device in an unconfigured port, (i.e. on VLAN1) meaning you cant ping int VLAN1 without a device attached.
Also, when you remove the device, the int goes back to up/down, again unable to ping it.
By keeping VLAN1 as his management VLAN, when the switch is fully configured he intended not to have any ports in VLAN 1 at all.
Obviously he doesn't want to have a device permanently attached to an unconfigured port. I can't see that this is by default - any suggestions?
description 'Management VLAN - 94.x'
ip address 192.168.94.254 255.255.255.0
Vlan1 is up, line protocol is down
Hardware is Ethernet SVI, address is 000c.8523.6cbf (bia 000c.8523.6cbf)
Description: 'Management VLAN - 94.x'
Internet address is 192.168.94.254/24
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
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