Switching

IOS XE monitor capture issue

we are using IOS-XE 03.06.04E on switch 3850. I issue below commands: monitor capture buffer interface G1/0/22 bothmonitor capture PCAP match ipv4 protocol tcp any any monitor capture PCAP start Please associate capture file/bufferUnable to activate ...

NTP Security Problem

Hello folks! I receive this message from a company who made a scan my network and they found a problem with the NTP on many switches. "The remote NTP server responds to mode 6 queries. Devices that respond to these queries have the potential to beus...

Resolved! IP Nat outside blocks SSH & ICMP from WAN to outside int?

I have a Cisco ISR 4400 series with a very simple set up. I have an inside LAN interface and a WAN interface. When IP NAT outside is on my WAN facing interface, my LAN can access the internet, however, I can not SSH or Ping the WAN interface from the...

Routing between different subnets on the same interface

Moving to a new /21 subnet from an existing, functioning subnet (16 years). Routing on a 3 interface (2 inside, 1 outside) router, not a switch, and have assigned a secondary address on our primary inside interface. The normal Local and Connected rou...

TFTP & FTP time out error in packet tracer switch

hi i want to take backup of running or startup config by using tftp or ftp but the issue is when i try this from switch by using this command ( copy running-config tftp:) after giving host address it says time out error but when i do the same at r...

copy tftp many files

Hi everybody,I need to copy many files into the router.i tried to copy a list of "copy tftp://ip-address/file-name flash:"Is there a way to do it easier and faster without asking question for each copy

Can SFP connect to WS-C4506 without a Gbic card ?

Team, I have some free interfaces on my existing WS-C4506. So can GLC-LH-SMD= be connected to switch without a Gbic card ? The answer is NO, but can we still connect to it? Is there any alternative to connect the SFP without a Gbic card? Kindly...

Disabling Vstack - C3750 - 12.2(55)SE1

Hello Everyone, We have this C3750 switches on our network with IOS version - 12.2(55)SE1. To fix recent vulnerability with smart install ( https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-smartinstall ) we ha...

IP Helper on VLAN in a VRF

Hey all, We have a subinterface configured with an IP Helper address of a remote DHCP Server, this subinterface is also in a VRF. To add further complexity this VRF has a locally configured DHCP pool which is used for other VLAN in the same VRF. We...

Resolved! Cisco 4500x peer reload

Hi, This should be a really simple question but I can't find a definite answer elsewhere. When running the command 'Redundancy reload peer' in order to reload the peer supervisor in a live firmware upgrade scenario, will the ports on the peer swi...

block ssh to a svi

I have a svi (10.194.82.6/24) that's used for management of a switch P (vlan 82). The same vlan is used for management of other switches. i have to block all ssh access to this svi of switch P only except from 10.180.4.0/24 and 10.180.6.0/24 network...

MLS to MCQ for Cisco 3850

Hi seeking for your assistance on below matter. right now we are on the process of replacing our Cisco 3750 to 3850 model, but we can't configure the MLS to C3850 model. according to Cisco documents MLS is not available on Cisco 3850, only MCQ can b...

mls qos ssrr-queue meaning

Hi, can you help me. May I know the meaning of below commands? mls qos srr-queue output cos-map queue 3 threshold 1 4mls qos srr-queue output cos-map queue 4 threshold 1 3mls qos srr-queue output dscp-map queue 3 threshold 1 34mls qos srr-queue o...

Resolved! Does WS-X4548-GB-RJ45 is supported in VSS with 4506-E with SUP-8E ?

I have a pair of standalone Cisco 4506-E chassis each populated with WS-X45-SUP6-E and WS-X4548-GB-RJ45 line cards and other line cards. Now I'm goin to replace the WS-X45-SUP6-E with WS-X45-SUP8-E in both chassis and convert them into VSS with Cisco...