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Netgear GSM7328SO Command Line Interface (CLI) User Manual - Page 281

show ip helper statistics

UPC - 606449080162

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ProSafe Managed Switch Helper IP Address 1.2.3.4 1.2.3.5 show ip helper statistics Use this command to display the number of DHCP and other UDP packets processed and relayed by the UDP relay agent. Format Mode show ip helper statistics Privileged EXEC Term Definition DHCP client messages received The number of valid messages received from a DHCP client. The count is incremented only if IP helper is enabled globally, the ingress routing interface is up, and the packet passes a number of validity checks, such as having a TTL>1 and having valid source and destination IP addresses. DHCP client messages relayed The number of DHCP client messages relayed to a server. If a message is relayed to multiple servers, the count is incremented once for each server. DHCP server messages received The number of DHCP responses received from the DHCP server. This count includes only messages that the DHCP server unicasts to the relay agent for relay to the client. DHCP server messages relayed The number of DHCP server messages relayed to a client. UDP clients messages received The number of valid UDP packets received. This count includes DHCP messages and all other protocols relayed. Conditions are similar to those for the first statistic in this table. UDP clients messages relayed The number of UDP packets relayed. This count includes DHCP messages relayed as well as all other protocols. The count is incremented for each server to which a packet is sent. DHCP message hop count exceeded max The number of DHCP client messages received whose hop count is larger than the maximum allowed. The maximum hop count is a configurable value listed in show bootpdhcprelay. A log message is written for each such failure. The DHCP relay agent does not relay these packets. DHCP message with secs field below min The number of DHCP client messages received whose secs field is less than the minimum value. The minimum secs value is a configurable value and is displayed in show bootpdhcprelay. A log message is written for each such failure. The DHCP relay agent does not relay these packets. DHCP message with giaddr set to local address The number of DHCP client messages received whose gateway address, giaddr, is already set to an IP address configured on one of the relay agent's own IP addresses. In this case, another device is attempting to spoof the relay agent's address. The relay agent does not relay such packets. A log message gives details for each occurrence. Routing Commands 281

Section	Page
ProSafe Managed Switch	1
Contents	3
1. Using the Command-Line Interface	8
Licensing and Command Support	8
Command Syntax	10
Command Conventions	11
Common Parameter Values	11
Unit/Slot/Port Naming Convention	12
Using a Command’s “No” Form	13
Managed Switch Modules	13
Command Modes	14
Command Completion and Abbreviation	17
CLI Error Messages	18
CLI Line-Editing Conventions	18
Using CLI Help	19
Accessing the CLI	20
2. Stacking Commands	21
Dedicated Port Stacking	21
Stacking Commands	29
Non-Stop Forwarding Commands	31
Stack Firmware Synchronization Commands	35
3. Switching Commands	38
Port Configuration Commands	39
Loopback Interface Commands	45
Spanning Tree Protocol (STP) Commands	47
VLAN Commands	64
Double VLAN Commands	77
Voice VLAN Commands	80
Provisioning (IEEE 802.1p) Commands	82
Protected Ports Commands	82
Private Group Commands	85
Private VLAN	86
GARP Commands	90
GVRP Commands	92
GMRP Commands	94
Port-Based Network Access Control Commands	96
802.1X Supplicant Commands	109
Storm-Control Commands	112
Flow Control Commands	122
Port-Channel/LAG (802.3ad) Commands	123
Port Mirroring	139
Static MAC Filtering	141
DHCP L2 Relay Agent Commands	145
DHCP Client Commands	149
DHCP Snooping Configuration Commands	150
Dynamic ARP Inspection Commands	159
IGMP Snooping Configuration Commands	166
IGMP Snooping Querier Commands	177
MLD Snooping Commands	180
MLD Snooping Querier Commands	187
set mld querier	187
set mld querier query_interval	188
set mld querier timer expiry	188
set mld querier election participate	189
show mldsnooping querier	189
Port Security Commands	190
LLDP (802.1AB) Commands	194
LLDP-MED Commands	203
Denial of Service Commands	212
MAC Database Commands	222
ISDP Commands	224
Priority-Based Flow Control Commands	229
4. Multicast VLAN Registration (MVR)	232
About MVR	232
MVR Commands	232
5. Routing Commands	240
Address Resolution Protocol (ARP) Commands	240
IP Routing Commands	246
Router Discovery Protocol Commands	263
Virtual LAN Routing Commands	266
Virtual Router Redundancy Protocol Commands	267
DHCP and BOOTP Relay Commands	276
IP Helper Commands	278
Open Shortest Path First (OSPF) Commands	282
OSPF Graceful Restart Commands	322
nsf	323
nsf restart-interval	323
nsf helper	324
nsf helper disable	325
nsf [ietf] helper strict-lsa-checking	325
OSPF Interface Flap Dampening Commands	327
Routing Information Protocol (RIP) Commands	329
ICMP Throttling Commands	336
6. IP Multicast Commands	339
Multicast Commands	339
DVMRP Commands	344
PIM Commands	349
Internet Group Message Protocol (IGMP) Commands	360
IGMP Proxy Commands	367
7. IPv6 Commands	373
Tunnel Interface Commands	373
IPv6 Routing Commands	375
OSPFv3 Commands	398
OSPFv3 Graceful Restart Commands	429
DHCPv6 Commands	431
8. IPv6 Multicast Commands	439
IPv6 Multicast Forwarder Commands	439
IPv6 PIM Commands	442
IPv6 MLD Commands	449
IPv6 MLD-Proxy Commands	455
9. Quality of Service (QoS) Commands	461
Class of Service (CoS) Commands	461
Differentiated Services (DiffServ) Commands	469
DiffServ Class Commands	470
DiffServ Policy Commands	479
DiffServ Service Commands	484
DiffServ Show Commands	485
MAC Access Control List (ACL) Commands	491
IP Access Control List (ACL) Commands	495
IPv6 Access Control List (ACL) Commands	502
Time Range Commands for Time-Based ACLs	506
AutoVOIP	508
iSCSI Commands	512
10. Power over Ethernet (PoE) Commands	518
About PoE	518
PoE Commands	519
11. Utility Commands	529
Auto Install Commands	530
Dual Image Commands	532
System Information and Statistics Commands	534
Logging Commands	550
Email Alerting and Mail Server Commands	556
System Utility and Clear Commands	562
Simple Network Time Protocol (SNTP) Commands	572
DHCP Server Commands	579
DNS Client Commands	591
Packet Capture Commands	595
Serviceability Packet Tracing Commands	598
Cable Test Command	617
sFlow Commands	617
Software License Commands	622
IP Address Conflict Commands	623
Link Local Protocol Filtering Commands	624
RMON Stats and History Commands	625
UDLD Commands	631
12. Management Commands	635
Configuring the Switch Management CPU	636
Network Interface Commands	638
Console Port Access Commands	641
Telnet Commands	643
Secure Shell (SSH) Commands	648
Management Security Commands	651
Hypertext Transfer Protocol (HTTP) Commands	652
Access Commands	659
User Account Commands	659
SNMP Commands	683
RADIUS Commands	694
TACACS+ Commands	706
Configuration Scripting Commands	711
Pre-Login Banner and System Prompt Commands	713
Switch Database Management (SDM) Templates	714
IPv6 Management Commands	716
13. Log Messages	721
Core	722
Utilities	724
Management	726
Switching	730
QoS	736
Routing/IPv6 Routing	737
Multicast	740
Stacking	742
Technologies	743
O/S Support	745
14. Captive Portal Commands	747
Captive Portal Global Commands	747
Captive Portal Configuration Commands	751
Captive Portal Status Commands	757
Captive Portal Client Connection Commands	761
Captive Portal Interface Commands	765
Captive Portal Local User Commands	766
Captive Portal User Group Commands	772

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Routing Commands

281

ProSafe Managed Switch

Helper IP Address

..............................

1.2.3.4

...............................................

1.2.3.5

show ip helper statistics

Use this command to display the number of DHCP and other UDP packets processed and

relayed by the UDP relay agent.

Format

show ip helper statistics

Mode

Privileged EXEC

Term

Definition

DHCP client

messages received

The number of valid messages received from a DHCP client. The count is

incremented only if IP helper is enabled globally, the ingress routing interface is up,

and the packet passes a number of validity checks, such as having a TTL>1 and

having valid source and destination IP addresses.

DHCP client

messages relayed

The number of DHCP client messages relayed to a server. If a message is relayed

to multiple servers, the count is incremented once for each server.

DHCP server

messages received

The number of DHCP responses received from the DHCP server. This count

includes only messages that the DHCP server unicasts to the relay agent for relay

to the client.

DHCP server

messages relayed

The number of DHCP server messages relayed to a client.

UDP clients

messages received

The number of valid UDP packets received. This count includes DHCP messages

and all other protocols relayed. Conditions are similar to those for the first statistic in

this table.

UDP clients

messages relayed

The number of UDP packets relayed. This count includes DHCP messages relayed

as well as all other protocols. The count is incremented for each server to which a

packet is sent.

DHCP message hop

count exceeded max

The number of DHCP client messages received whose hop count is larger than the

maximum allowed. The maximum hop count is a configurable value listed in show

bootpdhcprelay. A log message is written for each such failure. The DHCP relay

agent does not relay these packets.

DHCP message with

secs field below min

The number of DHCP client messages received whose secs field is less than the

minimum value. The minimum secs value is a configurable value and is displayed in

show bootpdhcprelay. A log message is written for each such failure. The DHCP

relay agent does not relay these packets.

DHCP message with

giaddr set to local

address

The number of DHCP client messages received whose gateway address, giaddr, is

already set to an IP address configured on one of the relay agent’s own IP

addresses. In this case, another device is attempting to spoof the relay agent’s

address. The relay agent does not relay such packets. A log message gives details

for each occurrence.