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Issue with new CB250

I have an older aruba switch with a sfp port and a multimode fiber connected to it.then I use a networkcable to the CB250.on the other end of the fiber is a CB350.when I connect the fiber cable from aruba to CB250 I get link up, but no internet.on th...

IPsec over NAT444 issue

Hello Everyone I have to set up an ipsec tunnel with Lo0 as source of tha tunnel. Nat is activated in My CE and in the ISP level (NAT444)All ipsec and Nat configuration is ok but, and as I know that for the NAT to work correctly, the packet should pa...

mrkassimi by • Level 1
  • 242 Views
  • 5 replies
  • 0 Helpful votes

IP Phone CP-8861 Ring Tone

Hello everyone, In the IP Phone CP-8861, the ring tone is generated by a built-in speaker. Is there any way to take the ring tone out, so that I can amplify the tone using external amplifier or transmit the tone via FM Modulator ? Of course there is ...

Resolved! FTD wildcard cert showing CA not available

I have imported the PKCS12 file into objects > PKI > Cert enrollmentWhen adding the cert to the device it is stating CA not available.. is this because the CA Root and Sub CA's are also required to be added to the PKI cert enrollment section?This par...

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ssh to switch refused

hi all,when i try to ssh in to a switch i get a connection refused on port 22ssh robert@10.110.10.4ssh: connect to host 10.110.10.4 port 22: Connection refusedthanks,rob

New to Cisco - Avaya Phones

We are moving to Cisco C9200 Access switches with a Core C9300. Our environment has Avaya IP Office with physical phones on our desks. With our existing Avaya switch, the port the phone connects to is configured with two VLANs. We have VLAN 20 for PC...

MLuedke by • Level 1
  • 177 Views
  • 4 replies
  • 0 Helpful votes

C3850 upgrade failure

I wanted to upgrade the C3850 in stack from version 16.12.8 to version 16.12.11 in BUNDLE mode.The steps I followed:   1. copy tftp: flash: .... -> successfully   2. no boot system   3. boot system switch all flash:cat3k_caa-universalk9.16.12.11.SPA....

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catalyst 9800 boot old version after upgrade

helloi tried to upgrade in "INSTALL" mode from 17.03.07 to 17.09.05(I have no HA)all seems to be ok during upgrade (see attached) , bootvar seems ok :BOOT variable = bootflash:packages.conf,12;CONFIG_FILE variable does not existBOOTLDR variable does ...

mfradin by • Level 1
  • 155 Views
  • 3 replies
  • 0 Helpful votes

Importance of BPDU Guard and BPDU Filter !!

IntroductionConfiguringBPDUGuardConfiguringBPDU Filter IntroductionIn Networking World we know that to avoid any loops or any problem related to switching arcihtecure the stability of the Root Bridge is of paramount importance in the operation and co...

vPC topology dropping packet

Hello,I have a topology as below. Switch101 and switch102 are vPC peer, and switch201 and switch202 are another vPC peer. All the switches are Nexus 93180-EXHostA is connecting to swtich101 with a orphan port (port-channel)HostB is connecting to swit...

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YFZH by • Level 1
  • 2282 Views
  • 40 replies
  • 0 Helpful votes

Cisco ISE v3.1 - Using https://isepb.cisco.com/#/ (Portal builder)

Hi All, Got an issue with the ISE portal builder (https://isepb.cisco.com/#), built a new portal followed the documentation (e.g. downloaded the config/uploader tool) but this tool is not working correctly??.. Filled in the required criteria but appa...

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Jay233 by • Level 1
  • 970 Views
  • 7 replies
  • 0 Helpful votes

Using DNS to resolve switch hostnames for NTP

Hey all, I'm pretty new to all of this, I just passed the CCNA in June, and have been working as a jr. Net Eng/Admin of my company for about 8 months now.I was asked to configure our core switches at our main office as NTP for the rest of our network...

TSJoe by • Level 1
  • 247 Views
  • 6 replies
  • 0 Helpful votes

Make a Standard Webex without 10s delay

Hello I am deploying the Webex calling solution within my companyI would like to do something quite simple when someone calls my switchboard number, it plays an announcement and transfers directly to a number but I can't do it I have created an autom...

IOS software and wireless deployment

Hi,Could you please anyone answer following question:any differences between Cisco IOS software in the USA vs Overseas?any  differences between deploying wireless in the USA vs. Overseas?Thank you 

ys173p by • Level 1
  • 327 Views
  • 6 replies
  • 0 Helpful votes
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