Aruba R9G11A User guide

Type
User guide
AOS-CX 10.12 IP Services
Guide
8100, 83xx, 9300, 10000 Switch Series
Published: August 2023
Edition: 2
|2
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Contents
Contents
Contents 3
About this document 10
Applicable products 10
Latest version available online 10
Command syntax notation conventions 10
About the examples 11
Identifying switch ports and interfaces 11
Identifying modular switch components 12
IRDP 13
Configuring IRDP 14
IRDP commands 15
diag-dump irdp basic 15
ip irdp 15
ip irdp holdtime 16
ip irdp maxadvertinterval 17
ip irdp minadvertinterval 18
ip irdp preference 19
show ip irdp 20
IPv6 Router Advertisement 22
Configuring IPv6 RA 22
IPv6 RA scenario 24
IPv6 RA commands 24
ipv6 address <global-unicast-address> 25
ipv6 address autoconfig 25
ipv6 address link-local 26
ipv6 nd cache-limit 27
ipv6 nd dad attempts 28
ipv6 nd hop-limit 29
ipv6 nd mtu 29
ipv6 nd ns-interval 30
ipv6 nd prefix 30
ipv6 nd ra dns search-list 32
ipv6 nd ra dns server 33
ipv6 nd ra lifetime 34
ipv6 nd ra managed-config-flag 35
ipv6 nd ra max-interval 36
ipv6 nd ra min-interval 37
ipv6 nd ra other-config-flag 37
ipv6 nd ra reachable-time 38
ipv6 nd ra retrans-timer 39
ipv6 nd route 40
ipv6 nd router-preference 41
ipv6 nd suppress-ra 41
show ipv6 nd global traffic 42
show ipv6 nd interface 43
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Contents |4
show ipv6 nd interface prefix 46
show ipv6 nd interface route 47
show ipv6 nd ra dns search-list 48
show ipv6 nd ra dns server 48
sFlow 50
sFlow agent 50
Configuring the sFlow agent 51
sFlow scenario 52
sFlow scenario 2 53
sFlow agent commands 56
clear sflow statistics 56
sflow 57
sflow agent-ip 58
sflow collector 59
sflow disable 60
sflow header-size 60
sflow max-datagram-size 61
sflow mode 62
sflow polling 63
sflow sampling 64
show sflow 65
DHCP 67
DHCP client 67
Protocol and feature details 67
Supported platform and standards 67
Configuration task list 68
Considerations and best practices 68
Use case 68
DHCP client commands 69
ip dhcp 69
show ip dhcp 70
DHCP relay agent 71
Supported platform and standards 71
Protocol and feature details 72
DHCPv4 relay agent 73
Configuring the DHCPv4 relay agent 74
Use Case 75
DHCPv4 relay commands 81
DHCPv6 relay agent 92
DHCPv6 relay VRF support 92
Limitations 92
Configuring the DHCPv6 relay agent 93
Use Case 93
DHCP relay (IPv6) commands 97
Troubleshooting 102
One or more DHCP clients not getting IP address 102
DHCP server 103
Protocol and feature details 103
Supported platform and standards 104
Configuring a DHCPv4 server on a VRF 104
Configuring the DHCPv6 server on a VRF 106
DHCP server IPv4 commands 107
authoritative 107
bootp 108
clear dhcp-server leases 109
default-router 110
dhcp-server external-storage 111
dhcp-server vrf 112
disable 113
dns-server 113
domain-name 114
enable 115
lease 116
netbios-name-server 117
netbios-node-type 118
option 119
pool 120
range 121
show dhcp-server 122
static-bind 124
DHCP server IPv6 commands 125
authoritative 125
clear dhcpv6-server leases 126
dhcpv6-server external-storage 127
dhcpv6-server vrf 128
disable 129
dns-server 130
enable 131
lease 131
option 132
pool 133
range 134
show dhcpv6-server 135
static-bind 138
Troubleshooting 139
FAQ 140
DHCP snooping 142
Protocol details 143
Supported platform and standards 144
Configuring DHCPv4and v6 snooping over VXLAN overlay 144
DHCPv4 Snooping Use case 144
DHCPv4 snooping commands 147
clear dhcpv4-snooping binding 147
clear dhcpv4-snooping statistics 148
dhcpv4-snooping 149
dhcpv4-snooping (in config-vlan context) 150
dhcpv4-snooping allow-overwrite-binding 151
dhcpv4-snooping authorized-server 152
dhcpv4-snooping event-log client 153
dhcpv4-snooping external-storage 154
dhcpv4-snooping flash-storage 155
dhcpv4-snooping max-bindings 156
dhcpv4-snooping option 82 157
dhcpv4-snooping static-attributes 159
dhcpv4-snooping trust 160
dhcpv4-snooping tunnel vxlan trust 161
dhcpv4-snooping verify mac 161
show dhcpv4-snooping 162
show dhcpv4-snooping binding 164
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Contents |6
show dhcpv4-snooping statistics 165
DHCPv6 snooping commands 166
clear dhcpv6-snooping binding 166
clear dhcpv6-snooping guard-policy statistics 167
clear dhcpv6-snooping statistics 168
dhcpv6-snooping 169
dhcpv6-snooping (in config-vlan context) 170
dhcpv6-snooping authorized-server 171
dhcpv6-snooping event-log client 172
dhcpv6-snooping external-storage 173
dhcpv6-snooping flash-storage 174
dhcpv6-snooping max-bindings 176
dhcpv6-snooping trust 176
dhcpv6-snooping tunnel vxlan trust 177
match server access-list 178
match client prefix-list 179
preference 180
show dhcpv6-snooping 181
show dhcpv6-snooping binding 182
dhcpv6-snooping guard-policy 183
show dhcpv6-snooping guard-policy 184
show dhcpv6-snooping guard-policy interface 186
show dhcpv6-snooping guard-policy vlan 187
show dhcpv6-snooping statistics 188
Troubleshooting 189
DHCP Options 191
DHCP options commands 191
http-proxy 191
ND snooping 193
Overview (applies to the 8325, 9300, and 10000 Switch Series) 193
Overview (applies to the 6300, 6400, 8100, and 8360 Switch Series) 193
Configuring NDsnooping over VxLAN with IPv4 and IPv6 underlay 194
ND snooping commands 194
clear nd-snooping binding 194
clear nd-snooping ra-guard-policy statistics 196
clear nd-snooping statistics 196
diag-dump nd-snooping basic 197
nd-snooping 200
nd-snooping (in config-vlan context) 200
nd-snooping mac-check 201
nd-snooping prefix-list 202
nd-snooping max-bindings 203
nd-snooping nd-guard 204
nd-snooping ra-guard 205
nd-snooping ra-drop 206
nd-snooping trust 207
show nd-snooping 208
show nd-snooping binding 210
show nd-snooping prefix-list 211
show nd-snooping statistics 212
RA guard policy commands 213
hop limit 213
ipv6 nd-snooping ra-guard policy 214
managed-config-flag 215
match access-list 216
match prefix-list 217
nd-snooping ra-guard attach-policy 218
other-config-flag 220
router-preference 221
show nd-snooping ra-guard interface 221
show nd-snooping ra-guard policy 222
show nd-snooping ra-guard vlan 223
IPv6 destination guard 225
IPv6 destination guard commands 225
clear ipv6 destination-guard statistics vlan 225
ipv6 destination guard 226
show ipv6 destination-guard statistics vlan 226
show ipv6 destination-guard 227
IP Tunnels 229
Configuring an IP tunnel 230
Creating a GRE tunnel for traversing a public network 230
Creating two GRE tunnels to different destination addresses 232
Creating an IPv6 in IPv4 tunnel for traversing a public network 234
Creating an IPv6 in IPv6 tunnel for traversing a public network 235
IP tunnels commands 237
description 237
destination ip 238
destination ipv6 239
interface tunnel 240
ip address 242
ipv6 address 243
ip mtu 244
show interface tunnel 245
show running-config interface tunnel 247
shutdown 249
source ip 250
source ipv6 251
ttl 252
vrf attach 253
IPsec Tunnel 255
IPsec tunneling protocol 255
IPsec Tunnel encapsulation and decapsulation 255
IPsec tunnels commands 256
description 256
destination ip 257
ip mtu 258
show capacities-status 259
show capacities-status tunneling 259
show interface tunnel 260
show interface tunnel brief 261
show running-config interface tunnel 262
show running-config current-context 263
source ip 264
vrf attach 264
IP Source Lockdown 266
IP source lockdown commands 266
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Contents |8
IP source lockdown resource extended 266
IPv4 source lockdown commands 267
ipv4 source-binding 267
ipv4 source-lockdown 268
ipv4 source-lockdown hardware retry 269
show ipv4 source-binding 270
show ipv4 source-lockdown 271
IPv6 source lockdown commands 273
ipv6 source-binding 273
ipv6 source-lockdown 274
ipv6 source-lockdown hardware retry 275
show ipv6 source-binding 276
show ipv6 source-lockdown 277
Internet Control Message Protocol (ICMP) 280
ICMP message types 280
When ICMP messages are sent 280
ICMP redirect messages 281
When ICMP redirect messages are sent 281
ICMP commands 281
ip icmp redirect 281
ip icmp throttle 282
ip icmp unreachable 283
DNS 284
DNS client 284
Configuring the DNS client 284
DNS client commands 285
ip dns domain-list 285
ip dns domain-name 286
ip dns host 287
ip dns server address 288
show ip dns 289
ARP 292
Configuring proxy ARP 293
Configuring local proxy ARP 294
Configuring dynamic ARPinspection over VXLANoverlay 294
ARP commands 295
arp cache-limit 295
arp inspection 295
arp inspection trust 296
arp ipv4 mac 297
arp process-grat-arp 298
clear arp 299
debug arp-security 300
ip local-proxy-arp 301
ip proxy-arp 302
ipv6 neighbor mac 303
show arp 304
show arp inspection interface 305
show arp inspection statistics 306
show arp inspection vlan 307
show arp state 309
show arp summary 310
show arp timeout 311
show arp vrf 312
show ipv6 neighbors 313
show ipv6 neighbors state 314
show tech arp-security 316
Network Load Balancing (NLB) 318
NLB commands 318
arp ipv4 mac 318
show arp 319
show ip igmp snooping vlan group 320
Support and Other Resources 321
Accessing Aruba Support 321
Accessing Updates 322
Aruba Support Portal 322
My Networking 322
Warranty Information 322
Regulatory Information 322
Documentation Feedback 323
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 9
Chapter 1
About this document
About this document
This document describes features of the AOS-CX network operating system. It is intended for
administrators responsible for installing, configuring, and managing Aruba switches on a network.
Applicable products
This document applies to the following products:
nAruba 8100 Switch Series (R9W94A, R9W95A, R9W96A, R9W97A)
nAruba 8320 Switch Series (JL479A, JL579A, JL581A)
nAruba 8325 Switch Series (JL624A, JL625A, JL626A, JL627A)
nAruba 8360 Switch Series (JL700A, JL701A, JL702A, JL703A, JL706A, JL707A, JL708A, JL709A, JL710A,
JL711A, JL700C, JL701C, JL702C, JL703C, JL706C, JL707C, JL708C, JL709C, JL710C, JL711C, JL704C, JL705C,
JL719C, JL718C, JL717C, JL720C, JL722C, JL721C )
nAruba 9300 Switch Series (R9A29A, R9A30A, R8Z96A)
nAruba 10000 Switch Series (R8P13A, R8P14A)
Latest version available online
Updates to this document can occur after initial publication. For the latest versions of product
documentation, see the links provided in Support and Other Resources.
Command syntax notation conventions
Convention Usage
example-text Identifies commands and their options and operands, code examples,
filenames, pathnames, and output displayed in a command window. Items
that appear like the example text in the previous column are to be entered
exactly as shown and are required unless enclosed in brackets ([ ]).
example-text In code and screen examples, indicates text entered by a user.
Any of the following:
n<example-text>
n<example-text>
nexample-text
nexample-text
Identifies a placeholder—such as a parameter or a variable—that you must
substitute with an actual value in a command or in code:
nFor output formats where italic text cannot be displayed, variables
are enclosed in angle brackets (< >). Substitute the text—including
the enclosing angle brackets—with an actual value.
nFor output formats where italic text can be displayed, variables
might or might not be enclosed in angle brackets. Substitute the
text including the enclosing angle brackets, if any, with an actual
value.
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 10
About this document |11
Convention Usage
|Vertical bar. A logical OR that separates multiple items from which you can
choose only one.
Any spaces that are on either side of the vertical bar are included for
readability and are not a required part of the command syntax.
{ } Braces. Indicates that at least one of the enclosed items is required.
[ ] Brackets. Indicates that the enclosed item or items are optional.
or
...
Ellipsis:
nIn code and screen examples, a vertical or horizontal ellipsis indicates an
omission of information.
nIn syntax using brackets and braces, an ellipsis indicates items that can be
repeated. When an item followed by ellipses is enclosed in brackets, zero
or more items can be specified.
About the examples
Examples in this document are representative and might not match your particular switch or
environment.
The slot and port numbers in this document are for illustration only and might be unavailable on your
switch.
Understanding the CLI prompts
When illustrating the prompts in the command line interface (CLI), this document uses the generic term
switch, instead of the host name of the switch. For example:
switch>
The CLI prompt indicates the current command context. For example:
switch>
Indicates the operator command context.
switch#
Indicates the manager command context.
switch(CONTEXT-NAME)#
Indicates the configuration context for a feature. For example:
switch(config-if)#
Identifies the interface context.
Variable information in CLI prompts
In certain configuration contexts, the prompt may include variable information. For example, when in
the VLAN configuration context, a VLAN number appears in the prompt:
switch(config-vlan-100)#
When referring to this context, this document uses the syntax:
switch(config-vlan-<VLAN-ID>)#
Where <VLAN-ID> is a variable representing the VLAN number.
Identifying switch ports and interfaces
Physical ports on the switch and their corresponding logical software interfaces are identified using the
format:
member/slot/port
On the 83xx, 9300, and 10000 Switch Series
nmember: Always 1. VSF is not supported on this switch.
nslot: Always 1. This is not a modular switch, so there are no slots.
nport: Physical number of a port on the switch.
For example, the logical interface 1/1/4 in software is associated with physical port 4 on the switch.
If using breakout cables, the port designation changes to x:y, where x is the physical port and y is the lane when
split to 4 x 10G or 4 x 25G. For example, the logical interface 1/1/4:2 in software is associated with lane 2 on
physical port 4 in slot 1 on member 1.
Identifying modular switch components
nPower supplies are on the front of the switch behind the bezel above the management modules.
Power supplies are labeled in software in the format: member/power supply:
omember: 1.
opower supply: 1 to 4.
nFans are on the rear of the switch and are labeled in software as: member/tray/fan:
omember: 1.
otray: 1 to 4.
ofan: 1 to 4.
nFabric modules are not labeled on the switch but are labeled in software in the format:
member/module:
omember: 1.
omember: 1 or 2.
nThe display module on the rear of the switch is not labeled with a member or slot number.
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 12
Chapter 2
IRDP
IRDP
ICMP Router Discovery Protocol (IRDP), an extension of the ICMP, is independent of any routing
protocol. It allows hosts to discover the IP addresses of neighboring routers that can act as default
gateways to reach devices on other IP networks.
IRDP operation
IRDP uses the following types of ICMP messages:
nRouter advertisement (RA): Sent by a router to advertise IP addresses (including the primary and
secondary IP addresses) and preference.
nRouter solicitation (RS): Sent by a host to request the IP addresses of routers on the subnet.
An interface with IRDP enabled periodically broadcasts or multicasts an RA message to advertise its IP
addresses. A receiving host adds the IP addresses to its routing table, and selects the IP address with the
highest preference as the default gateway.
When a host attached to the subnet starts up, the host multicasts an RS message to request immediate
advertisements. If the host does not receive any advertisements, it retransmits the RS several times. If
the host does not discover the IP addresses of neighboring routers because of network problems, the
host can still discover them from periodic RAs.
IRDP allows hosts to discover neighboring routers, but it does not suggest the best route to a
destination. If a host sends a packet to a router that is not the best next hop, the host will receive an
ICMP redirect message from the router.
IP address preference
Every IP address advertised in RAs has a preference value. A larger preference value represents a higher
preference. The IP address with the highest preference is selected as the default gateway address.
You can specify the preference for IP addresses to be advertised on a router interface.
An address with the minimum preference value (-2147483648) will not be used as a default gateway
address.
Lifetime of an IP address
An RA contains a lifetime field that specifies the lifetime of advertised IP addresses. If the host does not
receive a new RA for an IP address within the address lifetime, the host removes the route entry.
All the IP addresses advertised by an interface have the same lifetime.
Advertising interval
A router interface with IRDP enabled sends out RAs randomly between the minimum and maximum
advertising intervals. This mechanism prevents the local link from being overloaded by a large number
of RAs sent simultaneously from routers.
As a best practice, shorten the advertising interval on a link that suffers high packet loss rates
Destination address of RA
An RA uses either of the following destination IP addresses:
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 13
IRDP |14
nBroadcast address 255.255.255.255.
nMulticast address 224.0.0.1, which identifies all hosts on the local link.
By default, the destination IP address of an RA is the multicast address. If all listening hosts in a local
area network support IP multicast, specify 224.0.0.1 as the destination IP address.
Proxy-advertised IP addresses
By default, an interface advertises its primary and secondary IP addresses. You can specify IP addresses
of other gateways for an interface to proxy-advertise.
VRF support
In IP-based computer networks, virtual routing and forwarding (VRF) is a technology that allows multiple
instances of a routing table to co-exist within the same router at the same time. Because the routing
instances are independent, the same or overlapping IP addresses can be used without conflicting with
each other.
IRDP is VRF aware. As the router advertisements and solicit processing occurs on the interface, packet is
through the interface and corresponding VRF.
VSX synchronization
IRDP supports VSX synchronization. For more information on using VSX, see the Virtual Switching
Extension (VSX) Guide for your switch and software version
Configuring IRDP
Prerequisites
A layer 3 interface.
Procedure
1. Enable IRDP on an interface with the command ip irdp.
2. Set the maximum hold time with the command ip irdp holdtime.
3. Set the maximum router advertisement interval with the command ip irdp maxadvertinterval.
4. Set the minimum router advertisement interval with the command ip irdp minadvertinterval.
5. Set the IRDP preference level with the command ip irdp preference.
6. Review IRDP configuration settings with the command show ip irdp.
Example
This example creates the following configuration:
nEnables IRDP on the layer 3 interface 1/1/1 with packet type set to broadcast.
nSets the hold time to 5000 seconds.
nSets the advertisement interval to 30 seconds.
nSets the minimum advertisement interval to 25 seconds.
nSets the IRDP preference level to 25.
switch(config)# interface 1/1/1
switch(config-if)# ip irdp broadcast
switch(config-if)# ip irdp holdtime 5000
switch(config-if)# ip irdp maxadvertinterval 30
switch(config-if)# ip irdp minadvertinterval 25
switch(config-if)# ip irdp preference 25
IRDP commands
diag-dump irdp basic
diag-dump irdp basic
Description
Displays diagnostic information for IRDP.
Example
switch# diag-dump irdp basic
=========================================================================
[Start] Feature irdp Time : Thu Jun 8 09:50:28 2017
=========================================================================
-------------------------------------------------------------------------
[Start] Daemon hpe-rdiscd
-------------------------------------------------------------------------
Interface: 1/1/1 (state : Up)
rdisc ipv4 (enabled: 0, max:600, min:450, hold:1800, pref:0, isBcast:0)
Router IPs - 192.168.1.2,
Interface: 1/1/2 (state : Up)
rdisc ipv4 (enabled: 0, max:600, min:450, hold:1800, pref:0, isBcast:0)
Router IPs - 192.168.2.2,
-------------------------------------------------------------------------
[End] Daemon hpe-rdiscd
-------------------------------------------------------------------------
=========================================================================
[End] Feature irdp
=========================================================================
Diagnostic dump captured for feature irdp
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms Manager (#)Operators or Administrators or local user group members with
execution rights for this command. Operators can execute this
command from the operator context (>) only.
ip irdp
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 15
IRDP |16
ip irdp [broadcast | multicast]
no ip irdp
Description
Enables IRDP on an interface and specifies the packet type that is used to send advertisements. By
default, the packet type is set to multicast. IRDP is only supported on layer 3 interfaces.
The no form of this command disables IRDP on an interface.
Parameter Description
broadcast Advertisements are sent as broadcast packets to IP address
255.255.255.255.
multicast Advertisements are sent as multicast packets to the multicast
group with IP address 24.0.0.1. Default.
Examples
Enabling IRDP on interface 1/1/1 with packet type set to the default value (multicast).
switch(config)# interface 1/1/1
switch(config-if)# ip irdp
Enabling IRDP on interface 1/1/1 with packet type set to broadcast.
switch(config)# interface 1/1/1
switch(config-if)# ip irdp broadcast
Disabling IRDP.
switch(config)# interface 1/1/1
switch(config-if)# no ip irdp
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms config-if Administrators or local user group members with execution rights
for this command.
ip irdp holdtime
ip irdp holdtime <TIME>
no ip irdp holdtime <TIME>
Description
Specifies the maximum amount of time the host will consider an advertisement to be valid until a newer
advertisement arrives. When a new advertisement arrives, hold time is reset. Hold time must be greater
than or equal to the maximum advertisement interval. Therefore, if the hold time for an advertisement
expires, the host can reasonably conclude that the router interface that sent the advertisement is no
longer available. The default hold time is three times the maximum advertisement interval.
The no form of this command removes the specified maximum amount of time the host will consider an
advertisement to be valid until a newer advertisement arrives and update it to the default value.
Parameter Description
<TIME> Specifies the lifetime of router advertisements sent from this
interface. Range: 4 to 9000 seconds. Default: 1800 seconds.
Example
Setting the hold time for interface 1/1/1 to 5000 seconds:
switch(config)# interface 1/1/1
switch(config-if)# ip irdp holdtime 5000
Removing the the hold time for interface 1/1/1 to 5000 seconds:
switch(config)# interface 1/1/1
switch(config-if)# no ip irdp holdtime 5000
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms config-if Administrators or local user group members with execution rights
for this command.
ip irdp maxadvertinterval
ip irdp maxadvertinterval <TIME>
no ip irdp maxadvertinterval <TIME>
Description
Specifies the maximum router advertisement interval.
The no form of this command removes the specified maximum router advertisement interval and
reverts to the default value.
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 17
IRDP |18
Parameter Description
<TIME> Specifies the maximum time allowed between the sending of
unsolicited router advertisements. Range: 4 to 1800 seconds.
Default: 600 seconds.
Example
Setting the advertisement interval for interface 1/1/1 to 30 seconds:
switch(config)# interface 1/1/1
switch(config-if)# ip irdp maxadvertinterval 30
Removing the advertisement interval for interface 1/1/1 to 30 seconds:
switch(config)# interface 1/1/1
switch(config-if)# no ip irdp maxadvertinterval 30
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms config-if Administrators or local user group members with execution rights
for this command.
ip irdp minadvertinterval
ip irdp minadvertinterval <TIME>
no ip irdp minadvertinterval <TIME>
Description
Specifies the minimum amount of time the switch waits between sending router advertisements. By
default, this value is automatically set by the switch to be 75% of the value configured for maximum
router advertisement interval. Use this command to override the automatically configured value.
The no form of this command removes the specified minimum amount of time the switch waits
between sending router advertisements and reverts to the default value.
Parameter Description
<TIME> Specifies the minimum time allowed between the sending of
unsolicited router advertisements. Range: 3 to 1800 seconds.
Default: 450 seconds (75% of the default value for maximum
router advertisement interval).
Example
Setting the minimum advertisement interval for interface 1/1/1 to 25 seconds:
switch(config)# interface 1/1/1
switch(config-if)# ip irdp minadvertinterval 25
Removing the minimum advertisement interval for interface 1/1/1 to 25 seconds:
switch(config)# interface 1/1/1
switch(config-if)# no ip irdp minadvertinterval 25
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms config-if Administrators or local user group members with execution rights
for this command.
ip irdp preference
ip irdp preference <LEVEL>
no ip irdp preference <LEVEL>
Description
Specifies the IRDP preference level. If a host receives multiple router advertisement messages from
different routers, the host selects the router that sent the message with the highest preference as the
default gateway.
The no form of this command removes the specified IRDP preference level and reverts to the default
value.
Parameter Description
<LEVEL> Specifies the IRDP preference level. Range: -2147483648 to
2147483647. Default: 0.
Example
Setting the IRDP preference level for interface 1/1/1 to 25.
switch(config)# interface 1/1/1
switch(config-if)# ip irdp preference 25
Removing the IRDP preference level for interface 1/1/1 to 25.
AOS-CX 10.12 IP Services Guide | (8100, 83xx, 9300, 10000 Switch Series) 19
IRDP |20
switch(config)# interface 1/1/1
switch(config-if)# no ip irdp preference 25
Command History
Release Modification
10.07 or earlier --
Command Information
Platforms Command context Authority
All platforms config-if Administrators or local user group members with execution rights
for this command.
show ip irdp
show ip irdp [vsx-peer]
Description
Displays IRDP configuration settings.
Parameter Description
<location> Specifies one of these values:
n<FQDN>: a fully qualified domain name.
n<IPV4>: an IPv4 address.
n<IPV6>: an IPv6 address.
vsx-peer
Shows the output from the VSX peer switch. If the switches do not have the VSX configuration or the ISL is down,
the output from the VSX peer switch is not displayed. This parameter is available on switches that support VSX.
Example
switch# show ip irdp
ICMP Router Discovery Protocol
Interface Status Advertising Minimum Maximum Holdtime Preference
Address Interval Interval
--------- -------- ----------- -------- -------- -------- -----------
1/1/1 Enabled multicast 6 8 10 10
1/1/2 Disabled multicast 450 600 1800 0
1/1/3 Enabled broadcast 450 600 1800 115
Command History
Release Modification
10.07 or earlier --
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Aruba R9G11A User guide

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User guide

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