Copyright © 2010, Juniper Networks, Inc.
Known Problems and Limitations
39
Release 11.1.1
−
Ensure that the
set dhcp relay inhibit-access-route-creation
command is
configured in the virtual router to prevent DHCP relay from installing host routes
by default.
DHCP External Server
z
With the unique client ID option enabled, when two clients with the same MAC
address or client ID are on an interface (where one client is connected over a router
and relay and the other client is connected directly), sending a release request from
one of the clients might terminate another client. [Defect ID 179759]
z
The DHCP renew counter and release counter (displayed with the
show ip
dhcp-external statistics
command) are doubled rather than incremented for each
renew and release sent. [Defect ID 78802]
z
When DHCP clients on an S-VLAN over bridged Ethernet stack configuration send a
decline message to a router that has DHCP relay and DHCP external server
configured in the same VR, the clients bindings are not removed from the DHCP
external server. [Defect ID 87086]
z
When DHCP relay and DHCP external server are configured in the same VR with
server-sync enabled, bindings are not created in the DHCP external server when
DHCP clients on an ATM bulk configuration interface stack and dynamic VLAN over
Ethernet stack sends a renew message. [Defect ID 87087]
DoS Protection
z
A Telnet session closes when sending ipLocalBGP protocol traffic at a rate in the
range 4096–4200 packets per second (pps) with suspicious control flow detection
enabled. [Defect ID 81974]
Work-around:
When the traffic drops below 4096 pps, open a new Telnet session.
Ethernet
z
When autonegotiation is enabled on Gigabit Ethernet interfaces with the
speed
automatically negotiate
command, issuing the link selection command logs out
subscribers. [Defect ID 87185]
Work-around
: Use the following commands to enable auto link selection (GE port
redundancy) and to switch from one port to the other port:
(config-if)#no link selection
(config-if)#link failover force
File System
z
When the primary SRP module is running JunosE Release 7.2.0 or higher-numbered
release and the standby SRP module is running a release numbered lower than
Release 7.2.0 (as in a downgrade situation), you cannot display the files for the
standby SRP module. [Defect ID 74104]
Forwarding
z
When performing MAC validation to match subscriber demux entries with ARP host
entries, the ES2 10G LM does an exact match, rather than a longest prefix match. The
subscriber demux entry source address must be a /32 value matching the IP address
of an ARP entry in order to validate the MAC address against that ARP entry. [Defect
ID 79641]
