Dell Force10 S4820T S4820T Configuration Guide - Page 88

www.dell.com | support.dell.com Enable Cross-checking Task Command Syntax Command Mode Enable cross-checking. Start the cross-check operation for an MEP. Configure the amount of time the system waits for a remote MEP to come up before the cross-check operation is started. mep cross-check enable Default: Disabled mep cross-check mep-id mep cross-check start-delay number ETHERNET CFM ETHERNET CFM ETHERNET CFM Loopback Message and Response Loopback Message and Response (LBM, LBR), also called Layer 2 Ping, is an administrative echo transmitted by MEPs to verify reachability to another MEP or MIP within the maintenance domain. LBM and LBR are unicast frames. Task Send a Loopback message. Command Syntax Command Mode ping ethernet domain name ma-name ma-name remote {mep-id EXEC Privilege | mac-addr mac-address} source {mep-id | port interface} Linktrace Message and Response Linktrace Message and Response (LTM, LTR), also called Layer 2 Traceroute, is an administratively sent multicast frames transmitted by MEPs to track, hop-by-hop, the path to another MEP or MIP within the maintenance domain. All MEPs and MIPs in the same domain respond to an LTM with a unicast LTR. Intermediate MIPs forward the LTM toward the target MEP. MPLS Core MEP MIP MIP MIP 88 | 802.1ag Linktrace mMessage Linktrace Response