Questions tagged “ios-xr”

4votes

2 answers

244views

IOS XR tunable DWDM XFP reports a different channel number in 'show controllers ... phy' than configured

On an IOS XR router (RSP-based ASR 9000 class, observed on IOS XR 4.x and 5.x), the poster configured a tunable DWDM XFP with 'controller dwdm 0/1/0/0', 'admin-state maintenance', 'wavelength 55', 'admin-state in-service' and then brought the TenGigE interface up. The running configuration shows…

qsfp_admin asked 15 days ago

3votes

2comments

96views

QSFP-100G-CU1M DAC link stays down between NCS55A2-MOD (IOS XR) and Catalyst 9500-48Y4C

The poster needs a 100GE link between a Cisco NCS55A2-MOD (NC55-MPA-4H-S MPA) and a Cisco Catalyst C9500-48Y4C using a QSFP-100G-CU1M DAC. Both platforms list the cable as supported, yet the link never comes up at the physical level. Because the Catalyst 9500 lacks 100G auto-negotiation (bug…

catalyst-9500 Cisco ios-xr ncs-5500 QSFP28

photon_runner70 asked 16 days ago

2votes

1 answer

124views

Where to configure the channel on a DWDM-SFP10G-C tunable optic

The poster could not find Cisco documentation describing how to set the frequency or ITU channel of a DWDM-SFP10G-C tunable 10G SFP+. A follow-up question asked whether a CPAK-100G-LR4 in a CRS-X 4-port 100GE LAN/OTN card could be tuned to a wavelength and connected directly to a ROADM of an…

Cisco DWDM dwdm-sfp10g-c ios-xr tunable-optic

sfp_node asked 18 days ago