Release 4.1 R2 Features
3
BXOS 4.1 R2 Software Release Notes
The gateway supports the following internal input reference clock sources:
T1 or E1 line clocks
10 MHz
BITS
CES recovered clock
The gateway supports the following internal output reference clock sources:
T1 or E1 line clocks
Clock of 25 MHz for Ethernet interface
Routing and Signaling
BFD for static routes—The BFD for static routes is used to detect next-hop
failure in sub-seconds with less overhead. BFD can be used to alert any control
plane protocols about the failure. To enable BFD for static routes, use the
bfd-liveness-detection
statement at the
[edit static-route destination-prefix]
hierarchy level.
For more information about BFD for static routes, see the
BXOS Configuration
Guide
.
VRRP implementation—VRRP implementation in BXOS provides the virtual
router function. All protocol messaging is performed using IP multicast
datagrams. A virtual router MAC address is used as the source of all periodic
VRRP messages sent by the master router to enable bridge learning in an
extended LAN.
A virtual router is defined by its virtual router identifier (VRID) and a set of
IP addresses. A VRRP router associates a virtual router with its real
addresses on an interface, and may also be configured with additional
virtual router mappings and priority for virtual routers it can backup. The
mapping between VRID and addresses must be coordinated among all
VRRP routers on a LAN.
Only the master for each virtual router sends periodic VRRP advertisement
messages. A backup router does not attempt to preempt the master unless
it has higher priority. VRRP router always becomes master of the any
virtual router associated with the addresses it owns. If the master is
unavailable, then the highest priority backup router transitions to master
after a short delay.
In BXOS 4.1R2 interface tracking feature is supported. Interface tracking in
VRRP group supports GIGE, VLAN, ML-PPP, PPP interface types and each
VRRP group can track a maximum of five interfaces. Bandwidth threshold
for interface tracking is not supported.
For more information about VRRP configuration including interface tracking
feature, see the
BXOS Configuration Guide
.
