Other Network Architecture Subjects

Hi, I've been troubleshooting this multicast issue for a week now and getting no where!  It is new configuration to get multicast traffic from one side of a firewall to the other using GRE. Devices on both sides of the firewall could be the source of...

Please advise, and thanks in advance.I have a new WS-C3750G-12S running 12.2(25)SEB2 and since I have working SFPs around so I thought I could just order this switch without any SFPs. I installed my good SFPs and when the 3750 boots up, I get the f...

I need to understand why routing protocols like BGP use port 179 , and eigrp uses port 88 etc etcBut IGRP does not use port number and use IP directly on protocol number 9. Need to understand the functionality of the routing protocols w.r.t port numb...

Hello Let's say we have 600 users divided in 6 vlans(each 100 hosts), what appliances do we use in real world?1) is it gonna be all catalyst l3 switches with 600 ports?2) or L2 switches with 600 ports that has trunk port to one of l3 switch interface...

clear ip ospf 1 processclear ip ro *and even removing ospf completely and then restoring it does not appear to work.

Hi allI hope i can get some clarity because i am very confused! My Network went down very briefly and when a certain switch came back up, the devices connected to it lost the ability to obtain their IP address, They had a reserved IP address in DHCP ...

Hello, I have a network consist of 2 routers & 2 L3 switches (topology attached), servers connected to both ends with multicast traffic. There is PIM Sparse mode configured on involved L3 interfaces along with IGMP snooping on the switches.   Testing...

Hi there!   I got these logs on cisco WS-C6506-E --aggregation device (s72033_rp-ADVENTERPRISEK9-M), Version 15.1(2)SY8, RELEASE SOFTWARE (fc5)--. Can someone help me know what's wrong?   Dec 17 18:59:21: %SSH-3-NO_MATCH: No matching hostkey algorith...

ROUTER#sho ip sla summIPSLAs Latest Operation SummaryCodes: * active, ^ inactive, ~ pending ID           Type        Destination       Stats       Return      Last                                           (ms)        Code        Run-----------------...