Hi,
On a Catalyst 4500 with SX-GBICs what does "link type is force-up" mean (show interface gi1/2, sx-gbic)? We're having troubles bringing up a link between a Cat4500 and Cat2950-sx24. Link light on 2950 doesn't light up. Link light on 4500-side does light up. We already exchanged ports / gbics / ... .
Cisco.com doesn't have an explanation of the "force-up" state (or I can't find it).
Erik
Please post the configs for the relevant ports.
I have had a look too and can't find anything much.
There is a thread in:
de.comp.hardware.netzwerke.misc
"E1000 bekommt keinen Link zum Catalyst-Switch"
Altavista babelfish helped slightly.
interface GigabitEthernet2/1 switchport trunk encapsulation dot1q switchport trunk allowed vlan 1,201-204 switchport mode trunk udld port flowcontrol send on channel-group 1 mode desirable ! interface GigabitEthernet2/2 ! interface GigabitEthernet3/1 spanning-tree portfast ! interface GigabitEthernet3/2 spanning-tree portfast ! interface GigabitEthernet3/3 spanning-tree portfast ! interface GigabitEthernet3/4 spanning-tree portfast .....
bcm-sw1#sh int | inc duplex Full-duplex, 1000Mb/s, link type is auto, media type is SX Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is SX Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Auto-duplex, Auto-speed Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 100Mb/s Auto-duplex, Auto-speed
bcm-sw1#sh ip int br Interface IP-Address OK? Method Status Protocol Vlan1 192.168.20.248 YES NVRAM up up Vlan201 10.20.1.248 YES NVRAM up up Vlan202 10.20.2.248 YES NVRAM up up Vlan203 10.20.3.248 YES NVRAM up up Vlan204 10.20.4.248 YES manual up up GigabitEthernet1/1 unassigned YES unset up up GigabitEthernet1/2 unassigned YES unset down down GigabitEthernet2/1 unassigned YES unset up up GigabitEthernet2/2 unassigned YES unset down down GigabitEthernet3/1 unassigned YES unset up up GigabitEthernet3/2 unassigned YES unset up up GigabitEthernet3/3 unassigned YES unset up up GigabitEthernet3/4 unassigned YES unset down down GigabitEthernet3/5 unassigned YES unset down down GigabitEthernet3/6 unassigned YES unset up up GigabitEthernet3/7 unassigned YES unset up up
Please post the configs for the relevant ports.
I have had a look too and can't find anything much.
There is a thread in:
de.comp.hardware.netzwerke.misc
"E1000 bekommt keinen Link zum Catalyst-Switch"
Altavista babelfish helped slightly.
interface GigabitEthernet2/1 switchport trunk encapsulation dot1q switchport trunk allowed vlan 1,201-204 switchport mode trunk udld port flowcontrol send on channel-group 1 mode desirable ! interface GigabitEthernet2/2 ! interface GigabitEthernet3/1 spanning-tree portfast ! interface GigabitEthernet3/2 spanning-tree portfast ! interface GigabitEthernet3/3 spanning-tree portfast ! interface GigabitEthernet3/4 spanning-tree portfast .....
bcm-sw1#sh int | inc duplex Full-duplex, 1000Mb/s, link type is auto, media type is SX Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is SX Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Auto-duplex, Auto-speed Auto-duplex, Auto-speed Full-duplex, 1000Mb/s, link type is auto, media type is RJ45 Full-duplex, 100Mb/s Auto-duplex, Auto-speed
bcm-sw1#sh ip int br Interface IP-Address OK? Method Status Protocol Vlan1 192.168.20.248 YES NVRAM up up Vlan201 10.20.1.248 YES NVRAM up up Vlan202 10.20.2.248 YES NVRAM up up Vlan203 10.20.3.248 YES NVRAM up up Vlan204 10.20.4.248 YES manual up up GigabitEthernet1/1 unassigned YES unset up up GigabitEthernet1/2 unassigned YES unset down down GigabitEthernet2/1 unassigned YES unset up up GigabitEthernet2/2 unassigned YES unset down down GigabitEthernet3/1 unassigned YES unset up up GigabitEthernet3/2 unassigned YES unset up up GigabitEthernet3/3 unassigned YES unset up up GigabitEthernet3/4 unassigned YES unset down down GigabitEthernet3/5 unassigned YES unset down down GigabitEthernet3/6 unassigned YES unset up up GigabitEthernet3/7 unassigned YES unset up up
Hi,
The config on both switches is actually quite easy:
interface GigabitEthernetX/Y switchport mode access !
In order to rule out any mis-configuration we stripped the config to the bare minimum. My first goal is to see an up/up state on both sides of the link. Cat4500 says in show interface output "link type is force-up" and administrative- and operational status "up". Cat2950 says in show interface output operational status "down". Interface is not in shutdown state.
I do not have physical access to the switches right now so I can't give you more details.
Erik
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