CLI Reference Guide

ACL Commands 273
service-acl input
Use the service-acl input command in Interface Configuration mode to block
Link Local Protocol Filtering (LLPF) protocol(s) on a given port. Use the no
form of this command to unblock link-local protocol(s) on a given port.
Syntax
service-acl input {blockcdp | blockvtp | blockdtp | blockudld | blockpagp |
blocksstp | blockall}
no service-acl input
• blockcdp — To block CDP PDU’s from being forwarded.
• blockvtp — To block VTP PDU’s from being forwarded.
• blockdtp — To block DTP PDU’s from being forwarded.
• blockudld — To block UDLD PDU’s from being forwarded.
• blockpagp — To block PAgP PDU’s from being forwarded.
• blocksstp — To block SSTP PDU’s from being forwarded.
• blockall — To block all the PDU’s with MAC of 01:00:00:0c:cc:cx (x-don’t care)
from being forwarded.
Default Configuration
This command has no default configuration.
Command Mode
Interface Configuration (Ethernet, Port-channel)
User Guidelines
To specify multiple protocols, enter the protocol parameters together on the
command line, separated by spaces. This command can only be entered once
per interface if no intervening no service-acl input command has been
entered.
Example
console(config-if-Te1/0/1)#service-acl input blockall
2CSNXXX_SWUM200.book Page 273 Tuesday, December 10, 2013 1:22 PM