Spanning-tree Forwarding State - Loop Guard - Cisco Community If BPDUs are not received on a non-designated port, and loop guard is enabled, that port is moved into the STP loop-inconsistent blocking state, instead of the listening learning forwarding state Without the loop guard feature, the port assumes the designated port role The port moves to the STP forwarding state and creates a loop
UC Version 15 Post Upgrade NTP Issue - Cisco Community Adding the additional ntp server did fix the issue with the inconsistent 'utils ntp' commands though and I was able to stop start restart the ntp service It also resolved the ntp unreachable warning message
Basic steps to troubleshoot layer 2 LAN issue: - Cisco Community Introduction This document will explain you initial layer 2 troubleshooting steps with some helpful IOS command Finding degraded performance across link Approaching Steps: Check for physical interface problems like duplex mismatch By default, each Cisco Switch port uses Ethernet auto-negoti
Port channel between C8200-1N-4T and - Cisco Community 2 interfaces on C8200-1N-4T: GigabitEthernet0 0 0 GigabitEthernet0 0 1 need to form a port channel with 2 interfaces on C9500-16X: Te1 0 1 Te1 0 2 On the router side, it has to be L3 port channel and on the switch side it has to be L2 Can someone please help me with config
Traceroute MAC not working consistently - Cisco Community Hi All, Is there a reason that a traceroute mac would work from some MACs and not others? It seems VERY inconsistent for me Sometimes the same MAC will work then randomly not work Here's what I get: CiscoL3Device#traceroute mac 309c 0000 b1b0 309c 0000 b1b0 Unable to send a l2trace request
Solved: Loop Guard - Cisco Community Hi, As I understand it, loop guard will put a non-designated port into a loop-inconsistent state if no BPDU is received after the max-age timeout, hence preventing that port from transitioning into a forwarding state What happens if there is a genuine loss of BPDU - the upstream switch is indeed d
Solved: Bandwidth Throughput EtherChannels - Cisco Community Cisco, though, is occasionally inconsistent on how to describe duplex bandwidth (read up on the 6500 bus bandwidth, it's usually referenced as 32 Mbps, but occasionally it's referenced as 16 Mbps [I believe it's actaully 16 Mbps duplex]), but Cisco still most often doubles the bandwidth for duplex "infrastructure" links, such as when referring
Catalyst 3850 error log - Cisco Community Hi! Recently an incident occurred in ws-c3850-24s x 2 units (stack, version 16 6 6) and ws-c3850-24t x 2 units (stack, version 16 6 6) After checking the log, it seems that the following logs was displayed for both ws-c3850-24s and ws-c3850-24t I am unable to find any bugs or a conclusive solution
Receiving inconsistent TLB values error when trying to add vlan Have CAT2950s, 3550s, 3560s that have converted from VTP client mode to transparent mode used config mode instead of vlan database to make the changes Now, am unable to add vlan using config mode nor vlan database and am rx the following error: "VLAN 1002 TLB 1 VLAN 1 has inconsistent TLB val