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?
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