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Forum Posts
Trying to setup a IPsec Tunnel between an existing Firepower (ASA) firewall and a ASAv that I recently installed in AWS. A few issues that I am experiencing.1. The Network interfaces I created in AWS assigned IP addresses from the same CIDR block. Th...
Hi - quick question, I see the capability to perform ERSPAN termination exists in IOS-XE 16.11 and beyond for the Catalyst 9K series, but I do not see any support for the Catalyst 3850 platform. I thought I heard at one point this capability would b...
Resolved! Native VLAN and CoS
Hi there, I ran through this paragraph in CCIE v5 book and was wondering can someone help explain this? I don't get the underlined statement below. Isn't it that native VLAN frames do not have CoS values? Let's say between the switch and the router, ...
Resolved! Input and CRC Errors on New Install 3850
Here's one for you guys to tinker with: I recently replaced a 3750X in our datacenter with a 3850. The switch in question is connected to a 7k via 2 trunk ports (Te1/1/3-4) configured as a port-channel. The second port (Te1/1/4) is showing numerous...
I have developed several Packet Tracker activities using Packet Tracer 7.2.1. However, after upgrading to Packet Tracer 7.2.2, when I enable "Always Show Port Labels", now I on see the first letter of the port. See attached image. Also attached is th...
I am having some issues trying to get OSPF working on a nexus 5K. I have simplified my configuration down to 2 switches/routers and just a couple interfaces to run some test. When I do this simple config using routed interfaces OSPF works and I can s...
I am totally lost on this one. A port connected to a backup server on hyper-v is losing packets. I get in wireshark lots of retransmissions including fast retransmissions and duplicate acks. The mtu on the switch was set to 9000 however the nic is no...
Hi all!I would have a question about an issue with CDP I am facing.We have an AP which is hitting the Bug CSCef35717.So the AP is sending CDP Frames tagged with VLAN1 even though we have a trunk with native VLAN different than 1.We have the issue tha...
We are tracking icmp-echo of remote IP of high BW link under IP SLA and then tracked in an HSRP. Here is the config details of IP SLA:ip sla 10 icmp-echo x.x.x.x source-ip y.y.y.y timeout 1000 threshold 500 frequency 3ip sla schedule 10 life forever ...
Resolved! SF 300 Enable CLI for putty
Hi,I've got a Cisco SF300 small business switch 24 port, when reaching my switch with 'putty' it comes up with 8 options e.g. Port Settings then last option is 'Exit'. I'm looking to enable the command line interface console to use in putty, I've rea...
I have a stack of 3850-24XS switches configured with several VLANs including one VLAN dedicated for storage/iSCSI traffic. The servers are HP Proliant and the storage array is Dell EqualLogic. All iSCSI ports are 10GB fiber using 3rd party SFP modul...
Resolved! 3850s not talking
I have two 3850s that are connected via copper. I can connect a device to each switch and can see the switch but I cannot see the other switch or other devices connected to the switch. I know I missed something in the config but can't find it. I am w...
Dear all, i got issue when implementing ip dhcp snooping. i use vlan 101 and DHCP Server is on cisco router. I use subinterface on my router. this is my topology client <mode access> fa0/22 switch catalyst 3560 fa0/24 <mode trunk> cisco router 891. t...
Hi, I know how to login to my cisco switch. I have a SG200-50 50-Port Gigabit Smart Switch. I'm looking to see if there is a way for me to checking if a port is overwhelmed to the point that it might cause connection issues on that port. I'm having h...
Resolved! HELP PLEASE!!!!!!!!!!!!!!!!!!
I have a lab Configuring a switch in VTP transparent mode and i cant for the life of me get the two routers to be able to ping each other see attached
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