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Replies

ASR GLC-LH-SMD

Byron Bohlsen
Beginner
Beginner

We are trying to install an ASR for our Level3 connectivity which is currently in a port on our switch. When we pull the SFP and put it in the ASR it doesn't recognize the SFP so we purchased a GLC-LH-SMD and we can't ever get it to light up. The connection works on our switch so we know it's not them.

Switch inventory:

NAME: "GigabitEthernet2/0/51", DESCR: "1000BaseLX SFP"
PID:                     , VID:     , SN: FNS1005H0EG

ASR inventory:

NAME: "subslot 0/0 transceiver 2", DESCR: "GE LX"
PID: GLC-LH-SMD          , VID: A   , SN: FNS172619   


Working switch port config:
 description TWT ENLAN
 switchport access vlan 357
 switchport trunk encapsulation dot1q
 switchport trunk native vlan 254
 switchport trunk allowed vlan 357
 switchport mode trunk
 speed nonegotiate

 

ASR Config:
interface GigabitEthernet0/0/0
 no ip address
 no ip redirects
 no ip unreachables
 no ip proxy-arp
 negotiation auto
!
interface GigabitEthernet0/0/0.357
 description MPLS to MTKA over TWT-NLAN 1Gbps
 encapsulation dot1Q 357
 ip address 10.X.X.X    X.X.X.X
 no ip redirects
 no ip unreachables
 no ip proxy-arp

 

Why won't the connection even light up on the ASR?

3 Replies 3

sreenivasgajula
Beginner
Beginner

What kind of ASR router it is?

Sounds like I'm having a similar issue on ASR903 and ASR920 with GLC-LH-SMD, when I insert the optic, it throws the following log:

%TRANSCEIVER-3-CHECKSUM_ERROR:iomd:  Detected in the transceiver module in GigabitEthernet0/1/3, module disabled

 

However the same optic works in a ASR901. Tried different IOS images and still no luck. Working with Cisco TAC on this.

Simple over-sight on our part. We added:

no negotiation auto

 

that got the interface to work great.

Hi Byron,

What do you mean "over-sight"?

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