I have a Cisco Catalyst 3850. I added a network module with 4 gbic for fiber connection. The module is not showing any lights on either side of the connection. After the searching the depths of the internet I found out that when adding a network module like I did I have to enable the media-type of sfp for those interfaces. This is what I have tried.
enable
conf t
int tengigabitethernet 1/1/1
media-type sfp
it's not wanting to take this command.
is this the right way to enable media-type sfp?
Show inventory command:
flcoffice_48m_01#show inv
NAME: "c3xxx Stack", DESCR: "c3xxx Stack"
PID: WS-C3850-48T , VID: V04 , SN: FCW1905C178
NAME: "Switch 1", DESCR: "WS-C3850-48T"
PID: WS-C3850-48T , VID: V04 , SN: FCW1905C178
NAME: "Switch 1 - Power Supply A", DESCR: "Switch 1 - Power Supply A"
PID: PWR-C1-350WAC , VID: V01 , SN: LIT19221FY
NAME: "Switch 1 FRU Uplink Module 0", DESCR: "4x10G Uplink Module"
PID: C3850-NM-4-10G , VID: V01 , SN: FOC19238XKL
NAME: "TenGigabitEthernet1/1/1", DESCR: "1000BaseSX SFP"
PID: GLC-SX-MMD , VID: V01 , SN: FNS19270TD6
NAME: "TenGigabitEthernet1/1/2", DESCR: "1000BaseSX SFP"
PID: GLC-SX-MMD , VID: V01 , SN: FNS19270TQ0
NAME: "TenGigabitEthernet1/1/3", DESCR: "1000BaseSX SFP"
PID: GLC-SX-MMD , VID: V01 , SN: FNS1920059J
here is the errdisable recovery command:
flcoffice_48m_01#show errdisable recovery
ErrDisable Reason Timer Status
----------------- --------------
arp-inspection Disabled
bpduguard Disabled
channel-misconfig (STP) Disabled
dhcp-rate-limit Disabled
dtp-flap Disabled
gbic-invalid Disabled
inline-power Disabled
l2ptguard Disabled
link-flap Disabled
mac-limit Disabled
loopback Disabled
pagp-flap Disabled
port-mode-failure Disabled
pppoe-ia-rate-limit Disabled
psecure-violation Disabled
security-violation Disabled
sfp-config-mismatch Disabled
storm-control Disabled
udld Disabled
vmps Disabled
psp Disabled
Recovery command: "clear Disabled
Best Answer
Check if your interfaces are in err-disabled. If so, it's due to a known Cisco bug where it states gbic-invalid (even though it is valid) , you can manually shut no shut the interface with the SFP or add errdisable recovery cause gbic-invalid to your config. Possibly the bug will be fixed in future IOS releases.
Tidy