HP J9726A User Manual

Used in a VLAN context to configure or remove a server or broadcast address and
its associated UDP port number. You can configure a maximum of 16
forward-protocol udp assignments in a given VLAN. The switch allows a total
of 256 forward-protocol udp assignments across all VLANs.
You can configure UDP broadcast forwarding addresses regardless of whether UDP
broadcast forwarding is globally enabled on the switch. However, the feature does
not operate unless globally enabled.
This can be either of the following:<ip-address>
• The unicast address of a destination server on another subnet. For example:
15.75.10.43.
• The broadcast address of the subnet on which a destination server operates.
For example, the following address directs broadcasts to All hosts in the
15.75.11.0 subnet: 15.75.11.255.
NOTE: The subnet mask for a forwarded UDP packet is the same as the subnet
mask for the VLAN (or subnet on a multinetted VLAN) on which the UDP broadcast
packet was received from a client.
Any UDP port number corresponding to a UDP application supported on a device
at the specified unicast address or in the subnet at the specified broadcast
<udp-port-#>
address. For more information on UDP port numbers, see “TCP/UDP port number
ranges” (page 79).
Allows use of common names for certain well-known UDP port numbers. You can
type in the specific name instead of having to recall the corresponding number:
<port-name>
dns Domain name service (53)
netbios-ns NetBIOS name service (137)
netbios-dgm NetBIOS datagram service (138)
radius Remote authentication dial-in user service (1812)
radius-old Remote authentication dial-in user service (1645)
rip Routing information protocol (520)
snmp Simple network management protocol (161)
snmp-trap Simple network management protocol (162)
tftp Trivial file transfer protocol (69)
timep Time protocol (37)
Example:
The following command configures the routing switch to forward UDP broadcasts from a client on
VLAN 1 for a time protocol server:
HP Switch(vlan-1)# ip forward-protocol udp 15.75.11.155 timep
Viewing the current IP forward-protocol configuration
Syntax:
show ip forward-protocol [vlan <vid>]
Displays the current status of UDP broadcast forwarding and lists the UDP forwarding
addresses configured on all static VLANS in the switch or on a specific VLAN.
Example 42 shows the global display showing UDP broadcast forwarding status and configured
forwarding addresses for inbound UDP broadcast traffic for all VLANs configured on the routing
switch.
78 IP Routing Features

HP J9726A Specifications

General

Product Number	J9726A
Device Type	Switch
Layer	Layer 3
Power Supply	Internal
Jumbo Frame Support	Yes
PoE	No
Ports	24 x 10/100/1000
Additional Ports	4 x SFP+
Management	CLI, SNMP
Form Factor	Rack-mountable
MAC Address Table Size	32000 entries

Summary

1 Multimedia Traffic Control with IP Multicast (IGMP)

IGMP general operation and features

Explains IGMP's role in reducing bandwidth usage for multimedia applications.

IGMP operating features

Details the operational aspects and enhancements of IGMP configuration.

Configuring and displaying IGMP (CLI)

Viewing IGMP configuration for VLANs

Shows how to view IGMP configuration details for specific or all VLANs.

Viewing the current IGMP configuration

Enabling or disabling IGMP on a VLAN

Configuring per-port IGMP traffic filters

Configuring the querier function

Configuring static multicast groups

Automatic fast-leave IGMP

Configuring fast-leave IGMP

Configuring forced fast-leave IGMP

IGMP proxy forwarding

How IGMP proxy forwarding works

Illustrates how IGMP joins are propagated across router boundaries for multicast flows.

Configuring IGMP proxy (CLI)

Adding or leaving a multicast domain

Manages multicast domain configurations, associating them with border routers and address ranges.

Using the switch as querier

2 Multimedia Traffic Control with IP Multicast (IGMP) v2 NG

IGMP Context Commands

Provides CLI commands for configuring IGMP.

VLAN Context Commands

Enabling or Disabling IGMP on a VLAN

Covers enabling or disabling IGMP on a specific VLAN.

Configuring the Querier Function

Manages the switch's ability to function as an IGMP querier.

Configuring Per-Port IGMP Traffic Filters

Defines how each port handles IGMP traffic (auto, blocked, forward).

Configuring Fast-Leave IGMP

Configuring Forced Fast-Leave IGMP

Configuring Static Multicast Groups

Show Commands

Viewing the current IGMP configuration and status

Displays IGMP status for all enabled VLANs or a specific VLAN.

Statistics and State commands

show ip igmp statistics

Displays high-level IGMP statistics for all VLANs on the switch.

show ip igmp vlan <vid> statistics

Displays IGMP statistics for a specific VLAN on the switch.

Help function commands

show ip igmp

Displays IGMP status, global configuration, or statistics.

3 IP Routing Features

IP interfaces

Details how IP addresses are associated with VLAN interfaces on routing switches.

IP tables and caches

Explains the IP routing table, ARP cache, and IP forwarding cache.

IP route table

IP global parameters for routing switches

ARP age timer

IP interface parameters for routing switches

Configuring IP parameters for routing switches

Configuring ARP parameters

Configuring forwarding parameters

Enabling forwarding of directed broadcasts

Configuring ICMP

Configuring static IP routes

Configuring a static IP route

Viewing static route information

Configuring the default route

Configuring ECMP routing for static IP routes

Configuring RIP

Configuring RIP parameters

Enabling RIP

Enabling RIP on the routing switch and entering the RIP router context

Enabling IP RIP on a VLAN

Configuring RIP redistribution

Defining RIP redistribution filters

Configuring for redistribution

Enabling RIP route redistribution

Viewing RIP information

Viewing RIP interface information

Viewing RIP peer information

Configuring IRDP

Enabling IRDP globally

Enabling IRDP on an individual VLAN interface

Configuring DHCP relay

Enabling DHCP relay

Configuring an IP helper address

Verifying the DHCP relay configuration

DHCP Option 82

Option 82 server support

General DHCP Option 82 requirements and operation

General DHCP-relay operation with Option 82

Option 82 field content

Forwarding policies

Configuration options for managing DHCP client request packets

Multiple Option 82 relay agents in a client request path

Validation of server response packets

Configuring Option 82

UDP broadcast forwarding

Configuring and enabling UDP broadcast forwarding

Globally enabling UDP broadcast forwarding

Configuring UDP broadcast forwarding on individual VLANs

Viewing the current IP forward-protocol configuration