Cisco Cisco Expressway 维护手册
Field
Description
Usage tips
Retry interval
The interval in seconds with which a failed attempt to
establish a connection to the traversal server should be
retried.
establish a connection to the traversal server should be
retried.
Location
section:
Peer 1 to Peer 6
address
address
The IP address or FQDN of the traversal server.
If the traversal server is an Expressway-E cluster, this
should include all of its peers.
should include all of its peers.
for
more information.
Configuring traversal server zones
An Expressway-E can act as a traversal server, providing firewall traversal on behalf of traversal clients (an
Expressway-C).
Expressway-C).
For firewall traversal to work, the traversal server (Expressway-E) must have a special type of two-way
relationship with each traversal client. To create this connection between a Expressway-E and a
Expressway-C, see
relationship with each traversal client. To create this connection between a Expressway-E and a
Expressway-C, see
. For full details on how traversal client
to make sure that traversal zones to work.
After you have neighbored with the traversal client you can:
n
provide firewall traversal services to the traversal client
n
query the traversal client about its endpoints
n
apply transforms to any queries before they are sent to the traversal client
n
control the bandwidth used for calls between your local Expressway and the traversal client
n
view zone status information, including the connection addresses
Note: Connection addresses listed in the status information may have been translated by a NAT element
between the traversal server zone and the originating device.
between the traversal server zone and the originating device.
Field
Description
Usage tips
Configuration
section:
Name
The name acts as a unique identifier, allowing you to
distinguish between zones of the same type.
distinguish between zones of the same type.
Type
The nature of the specified zone, in relation to the
local Expressway. Select Traversal server.
local Expressway. Select Traversal server.
After a zone has been created, the
Type cannot be changed.
Type cannot be changed.
Hop count
The hop count is the number of times a request will
be forwarded to a neighbor gatekeeper or proxy (see
the
be forwarded to a neighbor gatekeeper or proxy (see
the
section for more information). This
field specifies the hop count to use when sending a
search request to this particular zone.
search request to this particular zone.
If the search request was received
from another zone and already has a
hop count assigned, the lower of the
two values is used.
from another zone and already has a
hop count assigned, the lower of the
two values is used.
Connection credentials
section:
Table 5: Traversal server zone configuration reference
Cisco Expressway Administrator Guide (X8.5.2)
Page 124 of 403
Zones and neighbors
Configuring zones