Easyvpn network extension plus config example

We can inspect the health of the EtherChannel with theВ show etherchannel summaryВ command: SwitchportВ configurations applied to this interface are replicated to the physical member interfaces. S1(config)# interface range f0/13 -15 S1(config-if-range)# channel-group 1 mode ? active Enable LACP unconditionally auto Enable PAgP only if a PAgP device is detected desirable Enable PAgP unconditionally on Enable Etherchannel only passive Enable LACP only if a LACP device is detected S1(config-if-range)# channel-group 1 mode active Creating a port-channel interface Port-channel 1ДЄs noted, a virtual port-channel interface Port-channel1 has been created to represent the logical link in WS-C3560X-24T-L. Only a single line is needed to configure a group of ports as an EtherChannel:

PAgP behaves the same, but its two modes are refered to as desirable and auto. Passive interfaces merely respond to LACP requests. To configure an EtherChannel using LACP negotiation, each side must be set to either active or passive only interfaces configured in active mode will attempt to negotiate an EtherChannel. Statically configuring an EtherChannel ('on') imposes no delay yet can cause serious problems if not properly configured at both ends. However, this negotiation introduces an overhead and delay in initialization. LACP helps protect against switching loops caused by misconfiguration when enabled, an EtherChannel will only be formed after successful negotiation between its two ends. That leaves LACP and 'on', both of which have a specific benefit. PAgP, while perfectly able, should probably be disqualified as a legacy proprietary protocol unless you have a specific need for it (such as ancient hardware).

Static Persistence ('On')В - No negotiation protocol is usedДЄny of these three mechanisms will suffice for most scenarios, however the choice does deserve some consideration.LACP (IEEE 802.3ad)В - Standards-based negotiation protocol.PAgPВ - Cisco's proprietary negotiation protocol.The bundle is treated as a single link.Д®therChannel NegotiationAn EtherChannel can be established using one of three mechanisms: With EtherChannel configured, multiple links are grouped into a port-channel, which is assigned its own configurable virtual interface. Under normal conditions, all but one redundant physical link between two switches will be disabled by STP at one end. EtherChannel is Cisco's term for bundling two or more physical Ethernet links for the purposes of aggregating available bandwidth and, to a lesser extent, providing a measure of physical redundancy.

Easyvpn network extension plus config example