Switching

Upgrading L2 port channel from 2x1G to 2x10G SFP+

I currently have a 2G L2 port channel PO1 between 2 core 4507E switches, which I now have the 10G SFP+ modules for. All single-mode fiber. What is the sequence of events that are likely to occur when this happens? The links are currently using port...

Question on IP Routing, little confused on routing.

So question, trouble with some routing issues. I am trying to a static route a device in my VLAN 12, however it is not working like what I planned. I know this works 0.0.0.0 0.0.0.0 64.65.66.68 this will route everything out. But I am trying the...

ISR 4K support of LACP ?

Question about LACP support on interfaces of ISR 4K Thanks

Nexus 7K syslog message: %DAEMON-2-SYSTEM_MSG: fatal: no hostkey alg - sshd

Hi everybody!Did anyone encounter this error on Nexus 7K %DAEMON-2-SYSTEM_MSG: fatal: no hostkey alg - sshdIt's also the last syslog message on the box for the last 5 days, while the other box has plenty of log messages for the same period, as usual....

Cisco catalyst 2950 not working

I have a catalyst 2950 and I'm trying to get it to work but the problem is it won't give any of my machines an IP address.

Resolved! 2960 policing breaks file transfer

Hi, i wonder if anybody can answer this somewhat confusing situation for me, i am trying to implement inbound rate limiting on an 8 port 2960 switch, i have configured a successfull policer to 10Mbps which is bang on using speedtest.net however when...

Sg300 connectivity with router, no internet access from any of the VLAN

Please refer the attached diagram and help. Thanks Jayesh

Resolved! Simple question about HSRP

Hi everybody, In a HSRP scenario where router A is active router and Router B is the standby router, what's happen if the link between the two switch fails? the data traffic is splitted? Thanks Paolo

Nexus 5548 mac address table

Hello, we are getting the following error: 2016 Oct 10 17:15:07 CEST: %FWM-2-STM_LEARNING_RE_ENABLE: Re enabling dynamic learning on all interfaces 2016 Oct 10 17:07:07 CEST: %FWM-2-STM_LIMIT_REACHED: Unicast station table dynamic capacity reached (l...

voip best practice for QoS

what's best practice for QoS for voip? what's best practice for queuing and scheduling? do have to configure queuing and scheduling in order to support voip?

Cisco SG200-26FP PoE capabilities

Hello, we are trying to solve one mystery about Cisco SG200-26FP PoE capabilities. In the datasheet (http://www.cisco.com/c/en/us/products/collateral/switches/small-business-200-series-smart-switches/data_sheet_c78-634369.html) is stated that "IEEE ...

WS-C2960X-48TS-LL reboot after command sh aaa servers

Hello All I just uprgade my IOS to version 15.2(5b)E, and after placing command sh aaa servers, my switch is going to reboot? For my is a bug..

Resolved! 4500x VSS Dual-Active detection

Hello, We have a test environment with 2 4500-x switches in VSS. We have not configured any dual-active detection, however if we shutdown VSL links, Active switch goes to recovery mode and Standby switch becomes Active How is it possible if no dual-...

Resolved! VTP Pruning v Manually removing vlans from trunks

Hi, From what I am reading, pruning and manually removing vlans from trunks essentially achieve similar goals. Is there a rule of thumb for this?, e.g if using VTP then go ahead with pruning? Are there other things to consider when deciding which to ...