Triggering a Layer 2 Ping
Use this procedure to trigger a Layer 2 ping, inside an SPBM cloud or network, which acts like native ping. This feature enables CFM to debug Layer 2. It can also help you debug IP shortcuts and the record for the shortcuts‘ ARP.
Before you begin
You must have a MEP that is associated with a VLAN.
Procedure
l2 ping {vlan <1-4059> routernodename WORD<0–255> | vlan <1-4059> mac <0x00:0x00:0x00:0x00:0x00:0x00>} [burst-count <1–200>] [data-tlv-size <0–400>] [frame-size <64–1500>] [priority <0–7>] [source-mode <nodal|noVlanMac|smltVirtual>] [testfill-pattern <all-zero|all-zero-crc|pseudo-random-bit-sequence|pseudo-random-bit-sequence-crc>] [time-out <1–10>]
l2 ping {ip-address WORD<0–255>} [burst-count <1–200>] [data-tlv-size <0–400>] [frame-size <64–1500>] [priority <0–7>] [source-mode <nodal|noVlanMac|smltVirtual>] [testfill-pattern <all-zero|all-zero-crc|pseudo-random-bit-sequence|pseudo-random-bit-sequence-crc>] [time-out <1–10>] [vrf WORD<1–16>]
Example
Switch:1# l2 ping vlan 2 mac 00.14.0d.bf.a3.df
Please wait for l2ping to complete or press any key to abort ----00:14:0d:bf:a3:df L2 PING Statistics---- 0(68) bytes of data 1 packets transmitted, 0 packets received, 100.00% packet loss
Switch:1# l2 ping vlan 2 routernodename MONTI0
Please wait for l2ping to complete or press any key to abort ----00:14:0d:a2:b3:df L2 PING Statistics---- 0(68) bytes of data 1 packets transmitted, 1 packets received, 0.00% packet loss round-trip (us) min/max/ave/stdv = 26895/26895/26895.00/ 0.00
Switch:1# l2 ping ip-address 192.0.2.10
Please wait for l2ping to complete or press any key to abort L2 PING Statistics : IP 192.0.2.10, paths found 1, paths attempted 1 ================================================================================ TX RX PERCENT ROUND TRIP TIME VLAN NEXT HOP PKTS PKTS LOSS MIN/MAX/AVE (us) ================================================================================ 2 SHAMIM (00:1a:8f:08:53:df) 1 0 100.00% 0/0/0.00
Variable Definitions
The following table defines parameters to configure the L2 ping parameters.
Variable |
Value |
---|---|
{vlan <1-4059> routernodename WORD<0–255> } (vlan <1-4059> mac <0x00:0x00:0x00:0x00:0x00:0x00> } {ip-address WORD<0–255> } |
Specifies the destination for the L2 ping:
|
burst-count <1–200> |
Specifies the burst count. |
data-tlv-size <0–400> |
Specifies the data TLV size. The default is 0. |
frame-size <64–1500> ] |
Specifies the frame size. The default is 0. |
testfill-pattern <all-zero|all-zero-crc|pseudo-random-bit-sequence|pseudo-random-bit-sequence-crc> |
Specifies the testfill pattern:
A cyclic redundancy check is a code that detects errors. The default is all-zero. |
priority <0–7> |
Specifies the priority. The default is 7. |
time-out <1–10> |
Specifies the interval in seconds. The default is 3. |
source-mode<nodal|noVlanMac|smltVirtual> |
Specifies the source mode:
The default is 1: nodal. |
vrf WORD<1–16> |
Specifies the VRF name. |