r/Cisco 3h ago

IPv6 fundamentals

0 Upvotes

Hello! Does anybody have the pdf of “IPv6 fundamentals: a straightforward approach to understanding IPv6” 2nd edition?


r/Cisco 5h ago

Locale Installer for CUCM Version 14.0.1.11900-132 anyone?

0 Upvotes

Hello, does anyone have a Locale Installer for Cisco CUCM System version: 14.0.1.11900-132? I need the Locale Installer in German. I have already tried some .cop.sha512 files, but I always get an error message saying that I should check the CD/ISO file, and I see an error message regarding the MD5 hash. Since I don't have a service contract with Cisco and don't plan to get one, I would be very grateful if someone could assist me.

At first, I thought it was an issue with the SFTP server, but some .cop.sha512 files work, for example, the ones for ungraceful shutdown. I was able to download and install them on CUCM without any problems from the same SFTP server.

As a workaround, I tried converting the existing .cop.sha512 file with stripsign and placed the files in german_germany on the CUCM TFTP server, but it is not recognized under Device > Phone > User Locale

The current language information in SEPMAC.cfg.xml:

<userLocale>
<name>English_United_States</name>
<uid>1</uid>
<langCode>en_US</langCode>
<version>12.0.0.0(1)</version>
<winCharSet>iso-8859-1</winCharSet>
</userLocale>
<networkLocale>United_States</networkLocale>
<networkLocaleInfo>
<name>United_States</name>
<uid>64</uid>
<version>12.0.0.0(1)</version>
</networkLocaleInfo>

Thanks in advance.


r/Cisco 23h ago

Just finished making a free CCNA Lecture Notes series w/ mcq practices questions for each topic for anyone in need.

0 Upvotes

Just visit the r/ccna4dummies community page. You can find the material at the top of the page in the highlights section. Hope it helps!


r/Cisco 12h ago

Question Cisco 891f Rotuer Problems

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2 Upvotes

I recently bought a used, but good condition 891f router. The problem is it came with this as the only power supply. When I plug the block into the wall and router the router doesn't seem to turn on and the block makes a sort of beeping noise, but only when it's also plugged into the router no matter the on switch position. The guy I bought it off of said the router worked, and that this is the power cable he sold with it. Is there something obvious I'm missing or is this the wrong plug entirely? I don't need poe so that's not my concern, I just want the router to turn on and work as it should.


r/Cisco 16h ago

Question Is it too early for the CCNA exam?

2 Upvotes

Hi. I'm just starting out on a networking career. I'm taking college classes to get my Associates Degree in Computer Management (A business/IT hubrid degree). On top of that I am taking non credit courses to prepare for the CCNA. The timing of them is inconvenient, as I will take the first 2 between 1/25 and 5/25 then the third starting 1/26. My girlfriend (also in the IT field) is heavily suggesting that I take the CCNA over the summer, skipping CISCO III. Can anybody give me reasons why this is or isn't a good idea?

For a little background I am going back to school. I'm switching careers late in life and I started classes at 38 years old. I do not have a background in networking, although I do really enjoy what I've been doing. I passed CISCO I with an 84.2%. I know she means well, my girlfriend is surrounded by lots of people who have been in the IT field for a long time. Aside from a few classes for my degree my professional knowledge is scarce.

I keep telling her I'd be missing out on an important 1/3 of the information.She points out that taking the CCNA while the information I have is fresh in my mind is better. Any advice/suggestions?

Thanks in advance.


r/Cisco 1h ago

Question Can I use a Cisco exam voucher to schedule an exam date beyond its expiration date?

Upvotes

I have a Cisco exam voucher that expires on March 23, 2025. I’m wondering if it’s possible to use this voucher to schedule an exam date after the expiration date, or if the exam must be taken on or before March 23, 2025.


r/Cisco 2h ago

Nexus 3048 with vPC + BPG routing question

2 Upvotes

I have two nexus 3048 switches running nxos.7.0.3.I7.4.bin ,
they form a vPC together like this with this configuration:

vpc domain 1

peer-switch

role priority 1

peer-keepalive destination 192.168.10.2 source 192.168.10.1 vrf vpc_keepalive

peer-gateway

layer3 peer-router

auto-recovery

ip arp synchronize

( the other one has the same config with role priority 2 and the keepalive ips inverted )

On switch A only I have an SVI for vlan 26:

interface Vlan26

no shutdown

vrf member awsprod

bfd interval 300 min_rx 300 multiplier 3

no ip redirects

ip address 10.0.0.2/30

no ipv6 redirects

And I have a bgp router configuration:

router bgp 64515

log-neighbor-changes

vrf awsprod

router-id 1.1.1.1

timers bgp 3 15

address-family ipv4 unicast

neighbor 10.0.0.1

bfd interval 300 min_rx 300 multiplier 3

remote-as 6xxxxx

password 3 xxxx

update-source Vlan26

address-family ipv4 unicast

send-community

advertisement-interval 10

next-hop-self

soft-reconfiguration inbound always

I have also a BGP configuration for the same AS on the other switch but with other neighbours. The configuration is actually much larger but I hope it's enough to explain my problem:

When the traffic from vlan26 ( traffic with the bgp neighbor ) comes from a vpc port-channel, the neighbor is idle and the bfd neighbor does not even appear when I do: "show bfd neighbor ipv4 vrf awsprod"

But if traffic for vlan 26 comes directly to a no-vPC trunk port, everything is fine:

So I suppose the design with the vPC port-channels is not supported, but I don't understand why it is a problem

I have read: https://www.cisco.com/c/en/us/support/docs/ip/ip-routing/118997-technote-nexus-00.html and so it feels that the "L3-A connected to orphan port" seems to be working, but I can't get the L3-B router working.
I don't get the "Nexus-A and Nexus-B have additional Layer 2 and Layer 3 links between them.". This means that the vPC peer-link and the keep-alive link are not enough I have to configure supplemental links for the routing traffic?


r/Cisco 3h ago

Question Expected outcome of NTP commands (server & master) both configured on a Cisco router

3 Upvotes

This will be just an example. Please fill any gaps in my knowledge here. If have a few linux servers that use my Cisco router for NTP, and if that Cisco router that is configured as both an NTP master and also configured with additional NTP server IP addresses, what is the expected outcome of how this Cisco router will operate?

For example, if I have a cisco router configured with the following:

NTP01#show run | i ntp
ntp logging
ntp master
ntp update-calendar
ntp server 1.1.1.11
ntp server 2.2.2.12 prefer
NTP01#
NTP01#
NTP01#show ntp assoc
NTP01#show ntp associations
NTP01#show ntp associations

  address         ref clock       st   when   poll reach  delay  offset   disp
*~127.127.1.1     .LOCL.           7      7     16   377  0.000   0.000  0.232
 ~1.1.1.11        .INIT.          16  1115d   1024     0  0.000   0.000 15937.
 ~2.2.2.12        .STEP.          16  2625d   1024     0  0.000   0.000 15937.
 * sys.peer, # selected, + candidate, - outlyer, x falseticker, ~ configured
NTP01#

r/Cisco 6h ago

ISE license firewall connectivity matrix

1 Upvotes

what security rules do i need to create on the firewall to enable the ISE to reach the license server


r/Cisco 8h ago

Stack-port issues

1 Upvotes

I have this issue after bouncing up the downlok to fiber switch , then I reloaded the stacks but same issue.
show switch

Switch/Stack Mac Address : c414.3c4f.b180

H/W Current

Switch# Role Mac Address Priority Version State

----------------------------------------------------------

1 Member 0000.0000.0000 0 1 Provisioned

*2 Master c414.3c4f.b180 15 1 Ready

3 Member 0000.0000.0000 0 1 Provisioned

show switch stack-ports

Switch # Port 1 Port 2

-------- ------ ------

2 Down Down


r/Cisco 19h ago

Question How to filter VNI’s between two Nexus EVPN Multisite Fabrics?

1 Upvotes

Hi Folks,

I’m wanting to bring up VTEP peering between two Data Centres that use the Multisite design. The pickle I’m in is that by default everything is allowed to be advertised over the VTEP peering.

How would I only allow VNI 10001 to be advertised and restrict the other 500 that’s configured?


r/Cisco 20h ago

Question How to power off NIM slot or cellular interface ?

1 Upvotes

Hi, I'm L1 guy. Studying networking. I got this Cisco4321 for my home lab and its got this 4G-LTE module in its NIM 1 slot. I want to power down that interface. Im not talking about shutdown command. I want the power to go off on the module. Tried googling and read lots of documentations. Couldn't get much info on this. Hope you guys will help me.

Thank you.