Specifications

Overview
ExtremeXOS 12.5.4 Release Notes
6
Feature Corrections in ExtremeXOS 12.5.3
This section lists the feature corrections supported in ExtremeXOS 12.5.3 software:
● BFD Static Routes—The Bidirectional Forwarding Detection (BFD) feature can be used to bring down
static routes when the host link fails. Without BFD, static routes always remain operationally Up
because there is no dynamic routing protocol to report network changes. This can lead to a black
hole situation, where data is lost for an indefinite duration. Because upper layer protocols are
unaware that a static link is not working, they cannot switch to alternate routes and continue to use
system resources until the appropriate timers expire.
● IGMP Router Alert—Per the current ExtremeXOS implementation, all IGMPv2 and IGMPv3 messages
generated by a switch are sent without the Router Alert option in the IP header. IGMP packets are
accepted and processed with or without the Router Alert option in the IP header. The IETF standard
(RFC 2236 and RFC 3376) states that IGMPv2 and IGMPv3 messages should be sent with Router
Alert Option in the IP header.
● ELRP Port Shutdown—When you have configured a switch to automatically disable the port where the
looped packet arrived, there may be certain ports that you do not want disabled. You can then create
a list of ports that are excluded from this automatic disabling and that will remain enabled. This list
can also contain EAPS ring ports. You can also specify that EAPS ring ports are excluded. When this
option is selected, the actual EAPS ring ports do not have to be explicitly listed.
● SNMP INFORM—This feature allows for confirmation of a message delivery. When an SNMP manager
receives an INFORM message from an SNMP agent, it sends a confirmation response back to the
agent. If the message has not been received and therefore no response is returned, the INFORM
message is resent. You can configure the number of attempts to make and the interval between
attempts.
● Autopolarity for Combo Ports—Autopolarity is now supported on combo ports. This feature applies to
only the 10/100/1000 BASE-T ports on the switch and copper medium on Summit combination
ports.
Feature Corrections in ExtremeXOS 12.5.2
This section lists the feature corrections supported in ExtremeXOS 12.5.2 software:
● Data Center Solutions—The following section has been added to the “Data Center Solutions” chapter
of the ExtremeXOS Concepts Guide:
- Introduction to Data Center Solutions.
● ELRP Addition—The following has been added to Appendix D, “Troubleshooting, Example: ELRP on
Protocol-based VLANs” of the ExtremeXOS Concepts Guide:
- For ELRP to detect loops on a protocol-based VLAN (other than the protocol any), you need to
add the ethertype 0x00bb to the protocol.
Example
# Create VLANs
create vlan v1
create vlan v2
# Protocol filter configuration
configure vlan v1 protocol IP
configure vlan v2 protocol decnet