Other Network Architecture Subjects

Cisco Device Shutdown

Hello all,This question may be silly, but i just want to know why some Cisco device do not need to shutdown. I am aware that we just need to physical turn the power ON/Off button or just unplug the plug.1. What is the reason no shutdown is require?2....

NAT out and back in on the same interface

I have a 1800 router and am trying to get this config going. Currently it cannot open a socket to the other host. I have two mail servers behind the router on the same lan network but translated to different public IP's. traffic from one server to th...

Resolved! 6509e to 7009 migration

We are migrating from a 6509e to Nexus 7k. In the design we will also be refreshing the infrastructure IP Addressing and VLANs. My goal is to have both switches running side by side until the migration is completed.Currently a single 6509 is my core,...

N7k vPC member port with two F2 modules

Hello,Is it possible to use two ports from different N7K-F248XP-25E modules in the one N7K-C7009 as member ports?

Cisco 3560 switch console port problem

I've been working with a Cisco 3560 switch and I'm unable to use the console port to configure the switch. I'm using a rollover console cable (Blue) and using both hyperterminal and Putty. Settings 9600, 8, 1, none. I can read output from the switch ...

HWIC-3G-HSPA-G Keeps shutting down?

Hi guys,We have 16 sites with these cards in 1941 routers as backup links, we have 1 that keeps powering off the modem, it re-establishes when rebooted with #test cell 0/0/0 modem-power-cycle, any ideas? see below for some output, let me know if you ...

"no keepalive" and "no shutdown" command on router and switch interface

HelloI am confused about the “no keepalive” and “no shutdown” command on different interface type on router. In serial interface, the status is down/down. But in ethernet interface, it is up/up. Could anyone please clear me?And can this reason apply ...

Rommon not responding to keystrokes

I have a Cisco 2960S-48FPD that someone was trying to do an upgrade, loaded c2960-lanbasek9-mz.150-2.SE2.bin instead of c2960-universalk9-mz.150-2.SE2.bin. To try and fix it they deleted both but before they could put the proper ios on, another pers...

Simple visio symbols

Hi!I am looking for simple visio symbols so I can create network maps. I just want the ordinary router, switch, wireless AP etc. I am only finding the detailed icon for every device.. Can someone post a link? /Lajja

Resolved! Implementation Problem

Hello All,First of All, I'm not sure if this is the correct forum.I'm in the process of designing and implementing a network. But to be honest, I'm still fresh in this field, I can troubleshoot and configure. But I need to know, from your experience,...

Resolved! Private MAC Address range

Dear all,I want to configure a MAC address on my asa 5520 interface.I ask you if exist a private MAC adrress range?Thanks & Regards,Igor.

Multilink PPP Under Load

Customer site connected to a PE using 2 x E1 circuits aggregated using Multilink PPP. The CE is a 1760, and the PE is a 7206. This is the customer HQ site.Connected to the same PE are three other sites from the same customer. Each is connected wit...

Resolved! Is there other way to show users activity aside from IP cache flow

Hi guys, I'd like to ask if there's another way to show users activity other than show ip cache flow. I can only see he uses 1F90/8080 (HTTP) but i can't verify on its destination port if what site does he opens. Thanks.show ip cache flowSrcIf ...

Head office network design ideas

Hej,I am in planning of LAN re-design for Head office which consists of different networks - user LAN, WAN, DMZ, Internet, Special connection, sever LANPresent traffic generation across the networks, ofcourse in near by future these values except to ...