We are having two 6500 switches connected over one 10G link, and we are going to create an additional 10G link with Etherchannel and an additional four 1G links with Etherchannel to be used as a backup for the 10G Etherchannel.
We are trying to avoid the spanning-tree and we might be using Flex links feature.
What the difference between the Flex links and the normal backup command
Flex Links provide link-level redundancy that is an
alternative to Spanning Tree Protocol (STP). STP is automatically disabled on Flex Links interfaces.
To configure the Flex Links feature, you configure one Layer 2 interface as the standby link for the link
that you want to be primary. With Flex Links configured for a pair of interfaces, only one of the
interfaces is in the linkup state and is forwarding traffic. If the primary link shuts down, the standby link
starts forwarding traffic. When the inactive link comes back up, it goes into standby mode.
1.One of the use of "backup interface" command is to put ISDN dialer interface or ISDN BRI interface itself as backup to the primary link.So that as soon as your primary link like T1/E1/DS0 goes down, ISDN will fire and you have backup link up, it will be configured alongwith delay command.
2.Other use of backup interface command is in ASA , but it only for VLAN interface.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.