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Community Activity

Cisco 9300 switch performance

Hi AllI am looking at some switch upgrades, I need 10G base T copper and 25G uplinks.We normally use the C9200-24UXB switches, these have bigger buffers (64MB)I need a few more ports and the best forwarding rate possible, so I am looking at the 9300X...

STP类型

有点难理解STP的类型,大家可以给个观念吗?谢谢现在市场上都有哪类的STP居多?以及tree calculation - all VLANs 跟 per vlans的意思是指?这个地方思考了许多,依然无法解惑 

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lucaslee05 by Spotlight
  • 195 Views
  • 4 replies
  • 0 Helpful votes

求Air-CT3504的升级固件

我有台CT3504控制器和C9117的AP,想升级到当前最新版本。求好心人可以分享下CT3504的8.10.196.0版本的升级包。固件下载地址为:https://software.cisco.com/download/home/286312601/type/280926587/release/8.10.196.0需要固件为: AP_BUNDLE_3500_8_10_196_0.aes、 AIR-CT3504-K9-8-10-196-0.aes。万分感谢。

ブルートフォース攻撃に使われたパスワードから何がわかるのか? No.006

・ブルートフォース攻撃は最も基本的なサイバー脅威の一つです。選んだウェブサイトで異なるユーザー名とパスワードの組み合わせを試してみて、ブロックされるまで繰り返すだけです。➢ Cisco Talosはこの活動に関連するIPアドレスのリスト、およびネットワークやサービスにアクセスするために攻撃者が通常試みるユーザー名とパスワードのリストを公開しました。➢ このリストには「**bleep**rd」や「123456」などの定番パスワードが含まれており、ユーザーがまだ教訓を学んでいないことを示しています。...

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taiimamu by Cisco Employee
  • 30 Views
  • 0 replies
  • 0 Helpful votes

WAN Design

I have my requirement as below.There are 6 locations which needs to be connected over WAN.Location-1 : IT Office (3 Floors)Floor 1 : Company AFloor 2 : Company BFloor 3 : Company CEach company needs to be logically separated. They may have same IP Se...

RS19 by Level 4
  • 149 Views
  • 3 replies
  • 0 Helpful votes

NVDの膨大な脆弱性のバックログはどうなっているのか? No.005

・国立脆弱性データベース(NVD)は、セキュリティ脆弱性に関する情報の主要な情報源ですが、現在、大量の未処理脆弱性が問題となっています。 ➢ 分析されていないCVEが5,799件に上り、重大度のスコアが未定または不正確なものも多いです。NVDは現在、提出されたCVEの約2.9%しか処理できておらず、以前のペースから大幅に遅れています。➢ この問題にどう対処するかがセキュリティチームにとって重要な課題となっています。 ・NVDとは、米国の国立脆弱性データベースで、ハードウェアとソフトウェアのセキ...

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taiimamu by Cisco Employee
  • 40 Views
  • 0 replies
  • 0 Helpful votes

Resolved! 路由器Serial & Ethernet

早安大家,想请问下,为何一些路由器是使用serial来连接? 为何不使用Ethernet线来连接?好比图 

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lucaslee05 by Spotlight
  • 583 Views
  • 4 replies
  • 0 Helpful votes

Resolved! Segment Routing WECMP

Good day everyone, I am interested in Segment Routing WECMP. I've searched about load balancing in Segment Routing and found that there is a formula by which load balancing calculates. But i didn't find the logic that on which information it load bal...

dundient by Level 1
  • 323 Views
  • 6 replies
  • 0 Helpful votes

Cisco 8300 E&M voice anamoly

Hello,  desperately need help from all the smart people.  I am upgrading my routers and am stumped as to why these strange tones are coming through my T1 Test set. I have tested a few configurations between my Cisco 3925s, 2900s and 8300s and the sym...

Resolved! DHCP failed, APIPA is being used error

Hello,I'm working on a lab assignment in packet tracer and when go into any of my devices and switch from static to DHCP it shows a message stating "DHCP failed. APIPA is being used."I have no idea what this means and I'm not getting any feedback fro...

Josh KR by Level 1
  • 279 Views
  • 8 replies
  • 0 Helpful votes

L2VPN - VPLS between Cisco & Juniper with Control Word enabled

Hi dear community,I have a good one for you regarding the setup of a vpls (ldp signaled) between a Cisco ISR1100X and a Juniper SRX300.As an example i am sending a simple ping between each node at each side of the VPLS.Both nodes are in Vlan 18 and h...

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Jerems by Spotlight
  • 111 Views
  • 2 replies
  • 0 Helpful votes