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HP 5500 Ei 5500 Si Switch Series Configuration Guide

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Configuration guidelines 
Follow these guidelines when you configure an ISATAP tunnel: 
•  No destination address needs to be configured for an ISATAP tunnel. The destination address of the 
tunnel can be automatically obtained through the IPv4 address embedded in the ISATAP address. 
•   To encapsulate and forward IPv6 packets whose destination address does not belong to the subnet 
where the receiving tunnel interface resides, configure a static route to reach the destination IPv6 
address through this tunnel interface on the devi ce. Because automatic tunnels do not support 
dynamic routing, you can configure a static route to  that destination IPv6 address with this tunnel 
interface as the outbound interface or the peer  tunnel interface address as the next hop. A similar 
configuration is required at the other tunnel end. For the detailed configuration, see  Layer 3—IP 
Routing Configuration Guide . 
•   The automatic tunnel interfaces using the same  encapsulation protocol cannot share the same 
source IP address. 
Configuration procedure 
To configure an ISATAP tunnel:  
Step Command Remarks 
1.   Enter system view. 
system-view N/A 
2.  Enable IPv6. 
ipv6  By default, the IPv6 forwarding 
function is disabled. 
3.
  Enter tunnel interface view. 
interface tunnel number  N/A 
4.  Configure an IPv6 address 
for the tunnel interface. 
• Configure an IPv6 global unicast 
address or site-local address: 
{  ipv6 address  { ipv6-address 
prefix-length  | 
ipv6-address /prefix -length  } 
{  ipv6 address  
ipv6- address /prefix -length  
eui-64 
•  Configure an IPv6 link-local 
address:  
{ ipv6 address auto link-local 
{ ipv6 address  ipv6- address  
link-local   The IPv6 link-local address 
configuration is optional. 
By default,  
•
 No IPv6 global unicast address 
is configured for the tunnel 
interface. 
• A link-local address will 
automatically be generated 
when an IPv6 global unicast 
address or link-local address is 
configured. 
5.   Specify the ISATAP tunnel 
mode.  tunnel-protocol ipv6-ipv4 isatap
 IPv6 manual tunnel by default. 
The same tunnel mode should be 
configured at both ends of the 
tunnel. Otherwise, packet delivery 
will fail. 
6.
  Configure a source 
address or interface for the 
tunnel.  source 
{ ip-address |  interface-type 
interface-number  }  By default, no source address or 
interface is configured for the tunnel.
 
7.
  Return to system view. 
quit  N/A
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    							 190 
Step Command Remarks 
8.  Enable dropping of IPv6 
packets using 
IPv4-compatible IPv6 
addresses.  tunnel discard 
ipv4-compatible-packet 
Optional. 
Disabled by default. 
 
Configuration example 
Network requirements 
As shown in Figure 3
, an IPv6 network is connected to an IPv4 network through an ISATAP switch. IPv6 
hosts reside in the IPv4 network.  
Configure the IPv6 hosts to access the IPv6 network through the ISATAP tunnel. 
Figure 3  Network diagram 
 
 
Configuration procedure 
Before configuring an ISATAP tunnel, make sure that the corresponding VLAN interfaces have been 
created on the switch, and that VLAN-interface 101 on the ISATAP switch and the ISATAP host can reach 
each other. 
•  Configure the switch: 
# Enable IPv6. 
 system-view 
[Switch] ipv6 
# Configure addresses for interfaces. 
[Switch] interface vlan-interface 100 
[Switch-Vlan-interface100] ipv6 address 3001::1/64 
[Switch-Vlan-interface100] quit 
[Switch] interface vlan-interface 101 
[Switch-Vlan-interface101] ip address 1.1.1.1 255.0.0.0 
[Switch-Vlan-interface101] quit 
# Create service loopback group 1  to support the tunnel service. 
[Switch] service-loopback group 1 type tunnel 
# Assign GigabitEthernet 1/0/3 to service loopbac k group 1, and disable STP, NDP, and LLDP on 
the interface. 
[Switch] interface GigabitEthernet 1/0/3 
[Switch-GigabitEthernet1/0/3] undo stp enable 
[Switch-GigabitEthernet1/0/3] undo ndp enable 
[Switch-GigabitEthernet1/0/3] undo lldp enable 
IPv6 network
Vlan-int101
1.1.1.1/8
Vlan-int100
3001::1/64
Switch
ISATAP switch
IPv6 host ISATAP host
IPv4 address:2.1.1.2/32
IPv6 address:
FE80::5EFE:0201:0102
2001::5EFE:0201:0102
3002::2/64
IPv4 network
Tunnel0
2001::5EFE:0101:0101/64
ISATAP tunnel
Service loopack port
GE1/0/3
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    							 191 
[Switch-GigabitEthernet1/0/3] port service-loopback group 1 
[Switch-GigabitEthernet1/0/3] quit 
# Configure an ISATAP tunnel. 
[Switch] interface tunnel 0 
[Switch-Tunnel0] ipv6 address 2001::5efe:0101:0101 64 
[Switch-Tunnel0] source vlan-interface 101 
[Switch-Tunnel0] tunnel-protocol ipv6-ipv4 isatap 
# Disable the RA suppression so that hosts can acquire information such as the address prefix from 
the RA message released by the ISATAP switch. 
[Switch-Tunnel0] undo ipv6 nd ra halt 
# Reference service loopback group 1 on the tunnel. 
[Switch-Tunnel0] service-loopback-group 1 
[Switch-Tunnel0] quit 
# Configure a static route to the ISATAP host. 
[Switch] ipv6 route-static 2001:: 16 tunnel 0 
•  Configure the ISATAP host: 
The specific configuration on the ISATAP host is  related to its operating system. The following 
example shows the configuration of the host running the Windows XP. 
# Install IPv6. 
C:\>ipv6 install 
# On a Windows XP-based host, the ISATAP interf ace is usually interface 2. Configure the IPv4 
address of the ISATAP router on the interface to complete the configuration on the host. Before 
doing that, display the ISATAP interface information: 
C:\>ipv6 if 2 
Interface 2: Automatic Tunneling Pseudo-Interface 
  Guid {48FCE3FC-EC30-E50E-F1A7-71172AEEE3AE} 
  does not use Neighbor Discovery 
  does not use Router Discovery 
  routing preference 1 
  EUI-64 embedded IPv4 address: 0.0.0.0 
  router link-layer address: 0.0.0.0 
    preferred link-local fe80::5efe:2.1.1.2, life infinite 
  link MTU 1280 (true link MTU 65515) 
  current hop limit 128 
  reachable time 42500ms (base 30000ms) 
  retransmission interval 1000ms 
  DAD transmits 0 
  default site prefix length 48 
# A link-local address (fe80::5efe: 2.1.1.2) in the ISATAP format was automatically generated for 
the ISATAP interface. Configure the IPv4 address of  the ISATAP switch on the ISATAP interface. 
C:\>ipv6 rlu 2 1.1.1.1 
# Display the information on the ISATAP interface. 
C:\>ipv6 if 2 
Interface 2: Automatic Tunneling Pseudo-Interface 
  Guid {48FCE3FC-EC30-E50E-F1A7-71172AEEE3AE} 
  does not use Neighbor Discovery 
  uses Router Discovery
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    							 192 
  routing preference 1 
  EUI-64 embedded IPv4 address: 2.1.1.2 
  router link-layer address: 1.1.1.1 
    preferred global 2001::5efe:2.1.1.2, life 29d23h59m46s/6d23h59m46s (\
public) 
    preferred link-local fe80::5efe:2.1.1.2, life infinite 
  link MTU 1500 (true link MTU 65515) 
  current hop limit 255 
  reachable time 42500ms (base 30000ms) 
  retransmission interval 1000ms 
  DAD transmits 0 
  default site prefix length 48 
# By comparison, it is found that the host acquires the address prefix 2001::/64 and 
automatically generates the address 2001::5efe:2.1.1.2. Meanwhile, uses Router Discovery is 
displayed, indicating that the router discovery functi on is enabled on the host. At this time, ping the 
IPv6 address of the tunnel interface  of the switch. If the address is successfully pinged, an ISATAP 
tunnel is established. 
C:\>ping 2001::5efe:1.1.1.1 
 
Pinging 2001::5efe:1.1.1.1 with 32 bytes of data: 
 
Reply from 2001::5efe:1.1.1.1: time=1ms 
Reply from 2001::5efe:1.1.1.1: time=1ms 
Reply from 2001::5efe:1.1.1.1: time=1ms 
Reply from 2001::5efe:1.1.1.1: time=1ms 
 
Ping statistics for 2001::5efe:1.1.1.1: 
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss), 
Approximate round trip times in milli-seconds: 
    Minimum = 1ms, Maximum = 1ms, Average = 1ms 
Verifying the configuration 
The ISATAP host can access the host in the IPV6 network. 
Displaying and maintaining tunneling configuration 
 
Task Command Remarks 
Display information about tunnel 
interfaces.  display interface
 [ tunnel ] [ brief [ down  ] ] [ | 
{  begin |  exclude  | include  } 
regular-expression  ] 
display interface  tunnel  number [ brief  ] [ | 
{  begin |  exclude  | include  } 
regular-expression  ]  Available in any view 
Display IPv6 information on tunnel 
interfaces. 
display ipv6 interface tunnel
 [ number  ] [ brief ] 
[ |  { begin |  exclude | include } 
regular-expression  ]   Available in any view 
Clear statistics on tunnel 
interfaces. 
reset counters interface
 [ tunnel  [ number  ] ]  Available in user view
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    							 193 
Troubleshooting tunneling configuration 
Symptom 
After the configuration of related parameters such as tunnel source address, tunnel destination address, 
and tunnel mode, the tunnel interface is still not up. 
Solution 
1. The common cause is that the physical interf ace of the tunnel source is not up. Use the display 
interface tunnel  or display ipv6 interface tunnel  commands to view whether the physical interface 
of the tunnel source is up. If the physical interface is down, check th e network connections. 
2. Another possible cause is that the tunne l destination is unreachable. Use the display ipv6 
routing-table  or display ip routing-table  command to view whether the tunnel destination is 
reachable. If no routing entry is available for tu nnel communication in the routing table, configure 
related routes.
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    							 194 
Index 
A B C D E I O P S T U  
A 
Address/prefix lease renewal,14 4 
A

pplication environment of trusted ports, 72 
A

pplying an extended address pool on an 
interface, 47 
A

pplying the address pool to an interface, 15 0 
ARP conf

iguration examples, 7 
As

signing an IP address to an interface, 24 
B 
B

OOTP client configuration example, 84 
C 
C

onfiguration guidelines, 12 
C

onfiguration procedure,10 9  
C

onfiguration procedure,12  
C

onfiguration procedure,99  
C

onfiguration procedure,21  
Co

nfiguration restrictions, 83 
Co

nfiguration restrictions, 68 
Co

nfiguration restrictions and guidelines, 10 9 
C

onfiguring a 6to4 tunnel, 18 5 
C

onfiguring a DHCPv6 address pool, 14 9 
C

onfiguring a DHCPv6 snooping trusted port,16 5  
C

onfiguring a static ARP entry, 3 
C

onfiguring a tunnel interface, 17 9 
C

onfiguring an address pool for the DHCP server, 38 
C

onfiguring an interface to dynamically obtain an IP 
address through BOOTP, 84 
C

onfiguring an IPv6 manual tunnel, 18 0 
C

onfiguring an ISATAP tunnel, 18 8 
C

onfiguring ARP quick update, 5 
Co

nfiguring basic IPv6 functions, 121 
C

onfiguring DHCP packet rate limit, 79 
C

onfiguring DHCP snooping basic functions,75  
C

onfiguring DHCP snooping entries backup, 77 
C

onfiguring DHCP snooping to support Option 82, 76 
C

onfiguring DNS spoofing, 90 
C

onfiguring ICMP to send error packets, 10 6  C
 onfiguring ICMPv6 packet sending,
13 4 
C

onfiguring IP unnumbered(only available on the HP 
5500 EI), 26 
Co

nfiguring IPv6 ND, 12 5 
Co

nfiguring IPv6 TCP properties, 13 3 
Co

nfiguring multicast ARP, 6 
C

onfiguring path MTU discovery, 13 3 
C

onfiguring stateless DHCPv6, 14 5 
C

onfiguring TCP attributes, 10 4 
C

onfiguring the DHCP relay agent security 
functions, 60 
C

onfiguring the DHCP relay agent to release an IP 
address, 62 
C

onfiguring the DHCP relay agent to support Option 
82, 63 
C

onfiguring the DHCP server security functions, 48 
Co

nfiguring the DHCPv6 client, 16 0 
Co

nfiguring the DHCPv6 relay agent, 15 6 
Co

nfiguring the DNS proxy, 89 
C

onfiguring the IPv4 DNS client, 88 
C

onfiguring the IPv6 DNS client, 16 8 
C

onfiguring the maximum number of DHCPv6 
snooping entries an interface can learn, 16 6 
C

onfiguring the maximum number of dynamic ARP 
entries for an interface, 4 
C

onfiguring trusted ports in a cascaded network, 72 
C

orrelating a DHCP server group with a relay agent 
interface, 59 
Cr

eating a prefix pool, 14 9 
D 
D

HCP address allocation, 28 
D

HCP client configuration example, 69 
DH

CP message format, 30 
DH

CP options, 31 
D

HCP relay agent configuration examples, 65 
D

HCP relay agent configuration task list, 58 
D

HCP server configuration examples, 51 
D

HCP server configuration task list, 38 
D

HCP snooping configuration examples,80
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    							 195 
DHCP snooping configuration task list,74 
DHCP sn
ooping functions, 71 
DHCP sn

ooping support for Option 82, 73 
D

HCPv6 address/prefix assignment, 14 3 
D

HCPv6 relay agent configuration example, 15 7 
D

HCPv6 server configuration example, 151 
D

HCPv6 server configuration task list, 14 8 
D

HCPv6 snooping configuration example, 16 6 
Displa

ying and maintaining ARP, 6 
Displa

ying and maintaining ARP snooping, 21 
Displa

ying and maintaining BOOTP client 
configuration, 84 
Displa

ying and maintaining DHCP snooping, 80 
Displa

ying and maintaining DHCPv6 snooping, 16 6 
Displa

ying and maintaining IP addressing, 27 
Displa

ying and maintaining IP performance 
optimization, 10 8 
Displa

ying and maintaining IPv4 DNS, 91 
Displa

ying and maintaining IPv6 basics 
configuration, 13 6 
Displa

ying and maintaining IPv6 DNS, 16 9 
Displa

ying and maintaining proxy ARP, 15 
Displa

ying and maintaining the DHCP client, 69 
Displa

ying and maintaining the DHCP relay agent,64 
Displa

ying and maintaining the DHCP server, 50 
Displa

ying and maintaining the DHCPv6 client, 161 
Displa

ying and maintaining the DHCPv6 relay 
agent, 15 7 
Displa

ying and maintaining the DHCPv6 server, 151 
Displa

ying and maintaining tunneling 
configuration, 19 2 
Displa

ying and maintaining UDP helper, 110  
D

NS proxy configuration example, 95 
Dy

namic domain name resolution configuration 
example, 171 
Dy

namic domain name resolution configuration 
example,92  
E 
Ena

bling client offline detection, 49 
Ena

bling common proxy ARP, 14 
Ena

bling DHCP, 46 
Ena

bling DHCP, 58 
Enabl

ing DHCP starvation attack protection, 78 
Ena

bling DHCP-REQUEST message attack 
protection, 79  Ena
 bling DHCPv6 snooping,16 5
 
Ena

bling dynamic ARP entry check,5  
Ena

bling handling of Option 82, 49 
Ena

bling local proxy ARP, 14 
Ena

bling offline detection, 62 
Ena

bling receiving and forwarding of directed 
broadcasts to a directly connected network, 10 3 
Ena

bling the DHCP client on an interface, 68 
Ena

bling the DHCP relay agent on an interface,58  
Ena

bling the DHCP server on an interface, 46 
Ena

bling the DHCPv6 server, 14 9 
I 
In

troduction to DHCPv6, 14 3 
I

Pv6 basics configuration example, 13 7 
I

Pv6 basics configuration task list, 12 0 
I

RDP configuration example, 10 0 
O 
Ov

erview(Configuring IPv4 DNS), 85 
Ov

erview(Configuring BOOTP client), 83 
O

verview(Configuring DHCP relay agent) , 56 
O

verview(Configuring DHCPv6 relay agent) , 15 5 
Ov

erview(Configuring DHCPv6 client), 16 0 
Ov

erview(Configuring UDP helper), 10 9 
Ov

erview(Configuring IPv6 basics), 112  
Ov

erview(Configuring ARP), 1 
Ov

erview(Configuring gratuitous ARP), 11 
Ov

erview(Configuring proxy ARP), 13 
Ov

erview(Configuring DHCPv6 server), 14 7 
Ov

erview(Configuring IRDP), 98 
Ov

erview(Configuring ARP snooping), 21 
Ov

erview(Configuring IP addressing), 22 
Ov

erview(Configuring IPv6 DNS), 16 8 
Ov

erview(Configuring DHCP server), 36 
Ov

erview(Configuring tunneling), 176 
Ov

erview(Configuring DHCPv6 snooping),16 4  
P 
Pr

otocols and standards, 14 6 
Pr

otocols and standards, 35 
Pr

oxy ARP configuration examples, 15 
S 
S

etting the aging timer for dynamic ARP entries, 4 
S

etting the DSCP value for DHCP packets, 64 
S

etting the DSCP value for DHCP packets, 68
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Setting the DSCP value for DHCP packets,50 
S
etting the DSCP value for DHCPv6 packets, 151 
S

etting the DSCP value for DHCPv6 packets, 15 7 
S

etting the DSCP value for DHCPv6 packets, 16 0 
S

etting the DSCP value for DNS packets, 90 
S

etting the DSCP value for IPv6 DNS packets, 16 9 
S

pecifying the source interface for DNS packets, 90 
S

pecifying the threshold for sending trap messages, 50 
S

tateless DHCPv6 configuration example, 161 
S

tatic domain name resolution configuration 
example, 91  S
 tatic domain name resolution configuration 
example, 17 0 
T 
T

roubleshooting DHCP relay agent configuration, 67 
T

roubleshooting DHCP server configuration,55  
T

roubleshooting IPv4 DNS configuration,97  
T

roubleshooting IPv6 basics configuration, 14 2 
T

roubleshooting tunneling configuration, 19 3 
T

unneling configuration task list, 17 8 
U 
UD

P helper configuration example,1 10
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Contents 
IP routing basics ··················\
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Hardware compatibility ··················\
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···  1 
Overview ··················\
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Routing table ··················\
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···  1 
Dynamic routing protocols ··················\
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Routing preference ··················\
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Load sharing ··················\
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Route backup ··················\
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Route recursion ··················\
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Route redistribution ··················\
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Displaying and maintaining a routing table ··················\
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············ 4 
Configuring static routing ··················\
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···· 6 
Hardware compatibility ··················\
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···  6 
Introduction ··················\
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 6 
Static route ··················\
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Default route ··················\
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·············  6 
Static route configuration items ··················\
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·  6 
Configuring a static route ··················\
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  7 
Configuring BFD for static routes ··················\
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·······  8 
BFD control packet mode ··················\
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BFD echo packet mode  ··················\
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Configuring static route FRR ··················\
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············  10 
Configuration prerequisites ··················\
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Configuration guidelines ··················\
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Configuration procedure ··················\
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Displaying and maintain ing static routes ··················\
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Static route config uration examples ··················\
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Basic static route configuration example ··················\
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Static route FRR configuration example ··················\
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BFD for static routes configurat ion example (direct session) ··················\
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BFD for static routes configurat ion example (indirect session) ··················\
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Configurin g RIP ··················\
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Hardware compatibility ··················\
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  21 
Overview ··················\
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Understanding RIP ··················\
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 21 
RIP operation ··················\
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RIP versions ··················\
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RIP message format ··················\
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Supported RIP features ··················\
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Protocols and standards ··················\
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RIP configuration task list  ··················\
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Configuring RIP basic functions ··················\
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· 26 
Configuration prerequisites ··················\
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Enabling RIP and a RIP interface ··················\
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Configuring the inte rface behavior ··················\
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Configuring a RIP version ··················\
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Setting the DSCP valu e for RIP packets ··················\
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Configuring RIP  route control ··················\
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Configuring an additional routing metric ··················\
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Configuring RIPv2 ro ute summarization··················\
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Disabling host ro ute reception ··················\
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Advertising a default route ··················\
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Configuring inbound or ou tbound route filtering ··················\
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Configuring a prio rity for RIP ··················\
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Configuring RIP route redistribution  ··················\
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Tuning and optimizing RIP networks ··················\
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Configuring RIP timers  ··················\
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Configuring split horizon and poison reverse ··················\
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Configuring the maximum number of ECMP  routes ··················\
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Enabling zero field check on incoming RIPv1 messages ··················\
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Enabling source IP address check  on incoming RIP updates ··················\
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Configuring RIPv2 mess age authentication ··················\
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Specifying a RIP neighbor ··················\
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Configuring RIP-to-MIB binding ··················\
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Configuring the RIP pac ket sending rate ··················\
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Configuring RIP FRR ··················\
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Configuring BFD for RIP ··················\
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Single-hop detection in BFD echo packet mode ··················\
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Bidirectional detection in  BFD control packet mode ··················\
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Displaying and maintaining RIP ··················\
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RIP configuration examples ··················\
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Configuring RIP version ··················\
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Configuring RIP route redistribution  ··················\
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Configuring an additional metric for a RIP interface ··················\
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Configuring RIP to advertise a summary route ··················\
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RIP FRR configura tion example ··················\
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Configuring BFD for RIP (single-hop de tection in BFD echo packet mode) ··················\
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Configuring BFD for RIP (bidirectional detection in BFD control packet mode)  ··················\
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Troubleshooting RIP ··················\
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No RIP updates received ··················\
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Route oscillation occurred ··················\
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Configuring OSPF ··················\
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Hardware compatibility ··················\
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  55 
Introduction to OSPF ··················\
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Basic concepts ··················\
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Area based OSPF network partition ··················\
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Router types ··················\
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OSPF network classification ··················\
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DR and BDR ··················\
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OSPF packet formats ··················\
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Supported features ·················\
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Protocols and standards ··················\
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OSPF configuration task list ··················\
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Enabling OSPF ··················\
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Configuration prerequisites ··················\
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Configuration procedure ··················\
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Configuring OSPF areas ··················\
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Configuration prerequisites ··················\
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Configuring a stub area ··················\
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Configuring an NSSA area  ··················\
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Configuring a virtual link ··················\
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Configuring OSPF network types ··················\
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